Focus on party democracy.

Internal campaigning in the party (stood the most candidates of any members' faction during the first CEC elections)

Fighting for membership democracy, around a particular model constitution and structures.

Anti-capitalism

Anti-imperialism

For the liberation of oppressed groups

Max Shanly

Chloe Braddock

Tina Becker (also CPGB-PCC)

Signed the joint statement For a Member Led, Socialist Party at The World Transformed 2025, endorsed by an assembly there.

Socialist Unity Platform, which pushed for six demands around party democracy at founding conference and afterwards.

Part of the Grassroots Left CEC slate, DemSocs are standing at least five candidates (Max Shanly, Chloe Braddock, Ian Spencer, Anahita Zardoshti, Graham Jones).

Formed in 2025 by some young ex-Corbynite and ex-ACORN activists.

Quickly merged with another faction, Max Shanly's For a Party Republic, before FPR was even announced publicly.

Focus on 'basebuilding' i.e. organising in workplaces and communities.

Less of a focus on internal party campaigning than other groups (e.g. standing for CEC)

Building up the party's focus on workplace and community activism rather than elections

Anti-capitalism

Anti-imperialism

Joshua Virasami

Jeanine Hourani

Jonas Marvin

Signed the joint statement For a Member Led, Socialist Party at The World Transformed 2025, endorsed by an assembly there.

After this, seems to have dropped out of all slates and alliances due to wanting to remain completely neutral between the leadership vs Zarah Sultana.

Formed in 2025 by well-connected members and staff from London Renters Union, Greater Manchester Tenants Union, Notes from Below, Organise Now, Palestinian Youth Movement, Black Lives Matter, rs21, and others.

In their pre launched form, helped to write and launch the 'Our Party' open letter to leadership demanding a democratic conference process.

Launched in 2025 at The World Transformed festival.

Focus on trans liberation.

Committing the party to a programme of liberation for trans people

Making the party's internal structures unhospitable to transphobia

Anti-capitalism

Unknown

Signed the joint statement For a Member Led, Socialist Party at The World Transformed 2025, endorsed by an assembly there.

Socialist Unity Platform, pushing for a common platform of six demands around party democracy.

Part of the Grassroots Left CEC slate, TLG are standing one candidate as part of it (Myra Shoko), and one candidate in Wales, not part of the slate (Lizzie Bailey).

Formed in 2025.

Involvement from ex-Labour Left figures.

Members' democracy

Pro- union affiliation

Anti-sortition

Mish Rahman (formerly)

Signed the joint statement For a Member Led, Socialist Party at The World Transformed 2025, endorsed by an assembly there.

Formed in 2025 by some activists previously involved in Labour. Mish Rahman, for example, was in Labour until 2025 and sat on the Labour NEC.

Being the specifically eco-socialist faction in Your Party.

Committing the party to a programme of eco-socialist transformation.

Chris Saltmarsh

The Eco-Socialist (online publication)

Signed the joint statement For a Member Led, Socialist Party at The World Transformed 2025, endorsed by an assembly there.

Part of the Grassroots Left CEC slate, ESH are standing at least one candidate (Chris Saltmarsh).

Formed in 2025.

Association with filmmaker Ken Loach.

Broad demands around increased member democracy.

Ken Loach

Socialist Unity Platform, which pushed for six demands around party democracy at founding conference and afterwards.

PfDP are standing at least one candidate for CEC (Naomi Wimbourne-Idrissi), endorsed by Grassroots Left CEC slate, though PfDP are not part of the organisation of the slate.

Formed in 2025.

Largely a small personal network, including filmmaker Ken Loach, union leader Ian Hodson, and ex-Labour activists Audrey White and Naomi Wimborne-Idrissi.

Focused on their open letter.

Being the self-declared and autonomous youth and student wing of Your Party, aiming to be officially recognised.

Becoming recognised by Your Party as an official youth and student section.

Anti-capitalism; feminism; anti-racism; anti-Zionism; etc.

(None known)

None.

Formed in 2025.

Being trans-exclusionary radical feminists (TERFs), i.e. transphobic feminists

Segregation of trans people from 'single-sex spaces'.

Gay, lesbian and bisexual people should not be in political alliance with trans people.

Social democracy

Valerie Coultas

None.

Formed in 2025.

Stood its member Valerie Coultas in the 2026 CEC elections.

(Little known)

Anti-capitalism

Anti-imperialism

Social investigation and class analysis before committing to specifc political demands

Providing for the material needs of the working class

Unknown

Signed the joint statement For a Member Led, Socialist Party at The World Transformed 2025, endorsed by an assembly there.

Formed in 2025 at The World Transformed festival.

Maoist-inspired strategy, including their launch statement referencing the (Maoist) Communist Party of the Philippines.

Being the largest socialist cadre organisation in Britain.

Extensive use of front organisations, while rarely acting openly as themselves.

2013 rape cover-up.

Controlling tactics when trying to take leadership of broad left movements or organisations.

Being widely unpopular on the left for the reasons above.

Stand Up to Racism (front)

We Demand Change (front)

Anti-Nazi League (front, defunct)

Socialist Worker (newspaper)

Marxism [YEAR] (public conference)

International Socialism (journal)

Bookmarks (bookshop/front)

Socialist Worker Student Society (student section)

International Socialist Tendency (international)

Lewis Neilson

Alex Callinicos

Tony Cliff

Supportive, but distinctive positions are unclear.

With other organisations, part of the Socialist Unity Platform, which pushed for six demands around party democracy at founding conference and afterwards.

Part of the negotiations to form the Grassroots Left CEC slate, which they support. They are specifically supporting candidate Mark Gage.

Formed in 1950 as the Socialist Review Group, it became the International Socialists in 1962 and the SWP in 1977.

In 2013, conducted an institutionalised rape cover-up, with many leadership figures involved in that cover-up still in post today. This made national news, and led to a large membership decrease and a number of splits.

Has a strong organised presence in a number of trade unions.

Sometimes stands candidates at elections, but as independents.

Members do not usually state their affiliation unless asked directly, but instead mention an SWP front and/or union affiliation.

Unlike many cadre organisations, but like most Cliffite Trotskyist ones, it does not have a political programme or 'what we stand for' document.

The Morning Star, the only socialist daily newspaper. Sometimes available at newsagents.

Branding itself as the communist party, claiming continuity from the old official British communist party (1920-1991).

Cultivating a good relationship with trade union and left-wing Labour Party leaders and bureaucrats in order to gain influence.

Transphobia.

Progressive nationalism.

Morning Star (newspaper)

Young Communist League (youth section, semi-autonomous)

Challenge (magazine of YCL)

Unity! (magazine)

Communist Review (journal)

Manifesto Press (publisher)

Marx Memorial Library (library, key supporter of)

Britain's Road to Socialism (political programme)

Robert Griffiths

Alex Gordon

Gawain Little

Andrew Murray (formerly)

Kate Hudson (formerly)

Cautious, informal endorsement of Your Party, but still committed to a strategy including the unions and the Labour left, as emphasised in their programme, Britain's Road to Socialism.

Not seeking dual membership arrangements.

Opposition to the "readiness of ultra-leftist sects to infiltrate [Your Party] in order to divide [it], pose as a ‘left opposition’ to the leadership and recruit from those they can influence and mislead".

Split from the old official communist party in 1988 over that party's rejection of Marxism-Leninism. That party then collapsed in 1991 with the Soviet Union.

Adopted most of the politics of the old communist party, such as support for official communist parties around the world, including the Chinese Communist Party.

Often campaigns against the rest of the left in trade unions, tending to support bureaucratic left-wing candidates rather than rank-and-file ones.

Celebrated the transphobic 2025 Supreme Court ruling excluding trans women from some protections under the Equality Act.

Stands openly in elections.

Historic relation to Militant, who were nationally known.

Electoral work through the Trade Union & Socialist Coalition.

Labour-style aims of federal, union-affiliated organisation.

Trade Union & Socialist Coalition (electoral front)

All Britain Anti-Poll Tax Federation (front, defunct)

The Socialist (newspaper)

Socialism [YEAR] (public conference)

Socialist Students (student section)

Committee for a Workers' International (international)

Dave Nellist

Ted Grant

"A federal structure [that] could allow for both individual members of a new party, via local branches, as well as pre-existing workers’ organisations and democratically organised community organisations, to have ongoing oversight over policy and the elected representatives of a new party."

Founding conference with no individual participants, only representatives of federal organisations.

Its direct predecessor, Militant, practised entryism into the Labour Party and famously controlled Liverpool council in the 80s.

When Militant was expelled from the Labour Party in 1991, it formed as Militant Labour, and then the Socialist Party in 1997.

Its electoral project, Trade Union & Socialist Coalition, launched in 2010, was once an actual federal coalition of groups and had affiliation from the National Union of Rail, Maritime and Transport Workers (RMT). This is no longer the case.

Has a strong organised presence in a number of trade unions.

Being George Galloway's latest vehicle.

Conservativism on social issues such as transphobia, homophobia, and abortion, as well as support for small businesses and landlords.

George Galloway (previously of The Respect Party)

Advocates for joint work in particular circumstances, and is open to members dual carding.

A member stood as candidate for CEC elections in 2026 (Waheed Akbar).

Formed in 2019 after Corbyn's Labour was defeated in a General Election.

Supported by/allied with Communist Party of Great Britain (Marxist–Leninist) until 2022. The CPGB-ML's leader was deputy leader of the party during some of this time.

Generally has some small amount of representation in local government.

Stood a fascist as a local council candidate in 2024.

Pro-Palestine.

Large percentage of student members and noticable presence at some universities.

Labour Party entryism until expelled in 2021.

Its ARE YOU A COMMUNIST? THEN GET ORGANISED international poster campaign.

Fiona Lali's 2024 electoral campaign in Stratford and Bow.

The Communist (newspaper)

Revolution Festival (public conference)

In Defence of Marxism (journal)

Wellred Books (publisher)

Revolutionary Communist International (international)

Fiona Lali

Alan Woods

Rob Sewell

Ted Grant

Previously supportive, but now opposed due to too much lost potential during the formation process. "All that’s clear is, right now, there’s no mass movement around Corbyn and Sultana."

Now argues to build their sect instead.

Its direct predecessor, Militant, practised entryism into the Labour Party and famously controlled Liverpool council in the 80s.

When Militant was expelled from the Labour Party in 1991, it split, staying in the Labour Party and becoming Socialist Appeal, where it fought for limited aims such as a return to old Labour's Clause Four.

In 2021, it was proscribed from the Labour Party and in 2024 changed its name to the Revolutionary Communist Party, completely rebranding as a hardened revolutionary organisation outside of Labour.

Little to no presence in trade unions.

Ambivalent on transphobia, emphasising 'culture war' issues as a distraction.

Leader Alan Woods rejects the Big Bang as an accurate theory.

Closer collaboration with institutions of post-Corbynism, such as The World Transformed festival, than other groups.

Emphasis on trans liberation.

Emphasis on internal democracy.

The only surviving split from the Socialist Workers Party as a result of the 2013 rape cover-up.

Presence of open internal factions.

Festival of the Oppressed (public conference)

Red Bird (zine)

The World Transformed (festival, partner organisation)

Troublemakers At Work (public conference, helped set up/involved in)

Prometheus (journal, no official relation but editorial board mostly Marxist Unity Caucus members)

Ian Allinson

Shanice McBean

Jonas Marvin

Archie Woodrow

High degree of member democracy.

Your Party should be anti-capitalist, anti-imperialist, opposed to the British state, committed to trans liberation and Palestinian liberation, and refuse to enter government unless it can enact its full programme.

Individual members are prominent in various Your Party members' factions.

Split from the SWP in 2013 in response to the SWP's institutionalised rape cover-up, where it formed as a much looser network. Now, most members and elected figures were never in the SWP.

Possibly the only British far-left group other than Your Party to have open democratic factions representing different politics and traditions, such as the Marxist Unity Caucus and the Revolution from Below Faction. The few remaining Cliffite Trotskyists do not have an open faction.

Presence in the Stop the War coalition.

Some transphobia.

Counterfire (newspaper)

Stop the War Coalition (campaign, dominant in)

John Rees

Lindsey German

Supportive, but distinctive positions on the party are unclear.

Counterfire have at least one member standing as a CEC candidate (Michael Lavalette), which is endorsed by the Grassroots Left CEC slate, though Counterfire are not part of the organisation of the slate.

Split from SWP in 2010, arguing for greater involvement in Stop the War Coalition and the People's Assembly.

Unlike many cadre organisations, but like most Cliffite Trotskyist ones, it does not have a political programme or 'what we stand for' document.

Fervent critique of the British labour movement, including Labour Party, Labour left and trade unions as pro-imperialist and irredeemable.

Emphasis on support for Cuba.

Fight Racism! Fight Imperialism (newspaper)

Rock Around the Blockade (campaign, dominant in)

David Yaffe (formerly)

Supportive of Zarah Sultana in the party and her more explicit socialist, anti-imperialist and class-focussed positions.

Highly critical of the direction of the party and fighting for Sultana to split from Corbyn and the other MPs and leadership figures.

Split from the International Socialists in 1974.

In 2017, sexual harassment committed by a member was dealt with very poorly, and the member was readmitted.

One of the very few groups to oppose Corbynism.

Zionism.

Support for Britain arming Ukraine.

Criticism of 'political Islam'.

Entryism into the Labour Party during the Corbyn years.

Solidarity (newspaper)

Clarion (magazine)

Women's Fightback (magazine)

Ideas for Freedom (public conference)

Another Europe Is Possible (helped set up/involved in)

Feminist Fightback (helped set up/involved in)

Sean Matgamna

"Rather than learn from the problems of Corbynism and its failure to tackle antisemitism, there seems to be a risk that “Your Party” will instead embrace the political lines of the more anti-Israel “hardline” of the Corbynite movement, the politics of the Palestine Solidarity Campaign and the Gaza Independents."

With other organisations, part of the Socialist Unity Platform, which pushed for six demands around party democracy at founding conference and afterwards.

Formed as a faction in Militant in 1966 around Sean Matgamna, but split in 1968 when it agreed to enter as a faction into the International Socialists, which it eventually split from in 1992 when it formed as its own organisation.

Undertook entryism into the Labour Party in 2015, but was proscribed in 2022.

Campaigned strongly against Brexit and still vocal about its pro-EU position.

Active in some unions, notably on the London Underground.

Has an organised presence in the Green Party.

Support for Britain arming Ukraine.

Higher degree of emphasis on ecosocialism and trans-inclusive feminism than some other groups.

Fourth International (international, as observer via Socialist Resistance)

International Viewpoint (magazine of international)

Youth Camp [YEAR] (camp for young members of the international)

Simon Hannah

Supportive, but distinctive positions on the party are unclear.

With other organisations, part of the Socialist Unity Platform, which pushed for six demands around party democracy at founding conference and afterwards.

Supportive of the Grassroots Left slate in the 2026 CEC elections.

Formed in 2021 as a fusion of Socialist Resistance, Mutiny and some individual activists (although Socialist Resistance doesn't seem to have completely dissolved).

The international that it has a relationship with (the Fourth International) is arguably Trotsky's original international organisation.

Being an international organisation with young Arab and Palestinian members.

Forefronting Palestinian liberation while being explicitly socialist.

Progressive International (international)

International League of Peoples' Struggle (international)

Jeanine Hourani

Some vague support.

Key members involved in setting up party faction Organising for Popular Power.

"The working class, both for its own survival and in commitment to internationalist co-resistance, must confront Zionism at home and abroad. This means building a militant anti-imperialist and anti-Zionist mass party"

Formed in Britain in 2021 by ex- student activists.

Has chapters in several countries.

"PYM membership is open to Palestinian and Arab youth between the ages 18-40, and volunteering with us is open to everyone".

(Little known.)

Socialist Alternative (newspaper)

International Marxism (journal)

International Socialist Alternative (international)

Campaign for a Democratic Party (front/operating name within Your Party)

Supportive, but distinctive positions on the party are unclear.

Sometimes acts as 'Campaign for a Democratic Party', rather than under its own name in Your Party.

With other organisations, part of the Socialist Unity Platform, which pushed for six demands around party democracy at founding conference and afterwards.

Part of the negotiations to form the Grassroots Left CEC slate, which they support.

Formed in 2019 from a split from the Socialist Party. Seems to take their politics except for more of an emphasis on liberation of oppressed groups.

Entryism into the Labour Party during the Corbyn years.

Workers Power (newspaper)

League for a Fifth International (international)

Supportive, but distinctive positions on the party are unclear.

Split from SWP in 1974.

During the Corbyn leadership, Workers Power dissolved, entered the Labour Party, and formed Red Flag as “a revolutionary socialist initiative campaigning in the Labour Party”, but later reformed and exited the party.

Emphasis on democratic rank-and-file struggles in trade unions.

Combination of environmentalist and Leninist emphasis.

NGO-style organisational form with grant funding.

Education and organiser trainings.

Comet (educational programme)

Orbit (cadre organisation formed by graduates of Comet programme. 20ish members.)

"[Your Party should] become a political instrument of the working and oppressed classes, whose primary function is to build social power based on anti-imperialist, eco-socialist political foundations."

Orbit is involved with YP's autonomous youth section.

None known.

Focus on sortitioned deliberative assemblies.

Roger Hallam (founder of Extinction Rebellion and Just Stop Oil)

Umbrella (British Hallamite federation, member of)

(Roger Hallam's personal NGO, supported by)

Moderately supportive, pushing for the use of sortition and deliberative assemblies in party structures.

None known.

Their newspaper/website Weekly Worker, which reports on the activities of the British far-left, often in a harsh tone and with few journalistic standards.

Association with Mike MacNair and his book 'Revolutionary Strategy'.

Stated aim of reforging a mass communist party.

Weekly Worker (newspaper)

Communist Platform (sometimes front/operating name within Your Party and previously in Left Unity)

Communist Forum (weekly livestream)

Communist University (public conference)

Why Marx? (education and discussion series, key participant of)

Mike MacNair

Jack Conrad

Tina Becker

"We openly seek to transform [Your Party] into a Communist Party. Fundamentally that means equipping [Your Party] with a Marxist minimum-maximum programme."

Often acts as 'Communist Platform', rather than under its own name in broad left organisations like Your Party.

With other organisations, part of the Socialist Unity Platform, which pushed for six demands around party democracy at founding conference and afterwards.

Supportive of the Grassroots Left CEC slate..

Began as a faction in the old official communist party in 1981 around The Leninist publication, and became its own organisation in 1992 after the communist party had dissolved.

Their activity is mainly focused on running the newspaper, and not work in movements or unions.

Their entryism into Labour and other projects, and a high level of secrecy.

Influence in Ken Livingstone's London mayoralty.

Support for the Chinese Communist Party, unusual for a Trotskyist group.

No Cold War Britain (campaign, key participant in)

Ken Livingstone (key ally of)

Tariq Ali (formerly, when it was the International Marxist Group)

John Ross

Simon Fletcher

Particular support for Jeremy Corbyn within the party.

Advocates that Your Party not be a socialist organisation, but a left-wing social-democratic one, due to electoral concerns.

Formed in 1961 as the International Group in support of the International Secretariat of the Fourth International and against the leadership of the then-current British section. Changed its name to the International Marxist Group (IMG) in 1968.

As the IMG, the group was involved in the development of the New Left and Vietnam solidarity, and John Lennon was friendly to the group.

In 1982, the IMG entered Labour and changed its name to the Socialist League/Socialist Action. Shortly after, suffered various splits.

Pursues a strategy of influencing or becoming key individuals and bureaucrats rather than campaigning at a membership level, not wholly dissimilar to the strategy of the CPB.

Being proscribed by Keir Starmer's Labour Party.

(Little known)

Ian Donovan (also Consistent Democrats)

Tony Greenstein

Members involved in the Democratic & Socialist Network project, pushing for member democracy and a socialist politics in Your Party.

The DSN is itself, with other organisations, part of the Socialist Unity Platform, which pushed for six demands around party democracy at founding conference and afterwards.

Formed in 2022 by a merger of two organisations of expelled Labour members: Labour Against the Witch Hunt and Labour in Exile.

Members of the Consistent Democrats openly take part in the Network.

Being a previous attempt to build a left-of-Labour party.

Association with filmmaker Ken Loach.

Party of the European Left (affiliated European party)

Ken Loach

Supportive. Considering its relationship with the party.

Formed in 2013 when filmmaker Ken Loach put out an appeal for the creation of a new left party.

Some other left groups entered Left Unity, such as the CPGB-PCC and others.

Dwindled after 2015 due to Corbyn's leadership of the Labour Party, which Left Unity supported.

Has not fielded electoral candidates since.

Campaigning and events through their Campaign for a Mass Workers’ Party front.

(Little known)

Campaign for a Mass Workers Party (front/operating name within Your Party)

Internationalist Standpoint (international/publication, exact relation unclear)

Roger Silverman

"A hybrid model where the members have a say, but platforms or tendencies within the party also have a role is the most meaningful way to deliver an activist-based democracy."

Its front the Campaign for a Mass Workers Party is, with other organisations, part of the Socialist Unity Platform, which pushed for six demands around party democracy at founding conference and afterwards.

Formed in 2012 by long-term ex-members of the Socialist Party of England and Wales and its international organisation the Committee for a Fourth International.

(Little known)

Workers Hammer (newspaper)

International Communist League (Fourth Internationalist) (international)

Particularly supportive of the pro-democracy, anti-imperialist, pro- class independence arguments of Zarah Sultana.

Argues for building a 'revolutionary caucus' within Your Party to include all revolutionary socialists in the party.

With other organisations, part of the Socialist Unity Platform, which pushed for six demands around party democracy at founding conference and afterwards.

The International Communist League (Fourth Internationalist) was organised in 1974 (at the time named the 'International Spartacist Tendency') as the international organisation of the American Sparticist League, formed in the early 60s. Unclear when the British section officially formed.

Has a strange view on 'mass immigration'.

(Little known)

Nick Wrack

Why Marx? (education and discussion series, participant in)

In favour of a high degree of membership democracy.

Members involved in the Democratic & Socialist Network project, pushing for member democracy and a socialist politics in Your Party.

The DSN is itself, with other organisations, part of the Socialist Unity Platform, which pushed for six demands around party democracy at founding conference and afterwards.

Formed in 2022.

(Little known)

1917 (journal)

Your Party Bolshevik Caucus (operating name in Your Party)

Against all Your Party alliances with the Green Party.

For Your Party organising against all state repression and imperialism.

For maximum members' democracy.

Operates as Your Party Bolshevik Caucus in the party.

Formed out of a split from the International Spartacist Tendency in 1982 and subsequent merger of various small groups in 1990/91.

Strongly pro- trans liberation, arguing for "class struggle against all oppression".

(Little known)

Bolshevik (journal)

Marxist Bulletin (front/operating name within Your Party. Previously used in the Socialist Labour Party by its predecessor the International Bolshevik Tendency)

Supportive, but distinctive positions on the party are unclear.

With other organisations, part of the Socialist Unity Platform, which pushed for six demands around party democracy at founding conference and afterwards.

Formed from a split from the International Bolshevik Tendency in 2018, citing an adherence to the spirit of their original 1982 split and opposing the IBT's characterisation of Russia as imperialist.

Anti-semitism

Being one of the most cranky groups.

Communist Fight (newspaper)

Liaison Committee for the Fourth International (international)

Ian Donovan

Supportive, but distinctive positions on the party are unclear.

Takes part in the Socialist Labour Network.

Voiced critical support for the Grassroots Left CEC slate.

Formed from a split from Gerry Dowling's Socialist Fight in 2020ish, in particular arguing for a strong adherence to Socialist Fight's 'Draft Theses on the Jews and Modern Imperialism', which argues that US/British support for Israel can only be explained by the overrepresentation of 'Jews among billionaires'.

Supportive of Russia's invasion of Ukraine as an anti-Nazi operation.

Members have been expelled from broad left campaigns for these views.

Anti-semitism

Some support for ISIS

Being one of the most cranky groups.

Gerry Downing

Socialist Fight (newspaper)

In Defence of Trotskyism (journal)

Has voiced some support for the Grassroots Left CEC slate.

"Gerry Downing was an oppositionist in the Healyite Workers Revolutionary Party at the time of its 1985 explosion and collapse, one of many active participants." He formed SA in 2009, and re-formed it in 2015.

Expelled the Consistent Democrats in 2020 due to their virulent anti-semitism, leaving SF largely a 1-person project.

(Little known)

Socialist republicanism

Tricolour flag

Steve Freeman

Supportive, but distinctive positions on the party are unclear.

A split from the Socialist Workers Party in the 1980s spawned the Revolutionary Democratic Group. After the Group had wound down by the 00s, its ex-leader Steve Freeman formed the Education Forum.

Being the political party associated with Corbyn after his purge from Labour.

Being the largest far-left/socialist party in Britain.

Jeremy Corbyn

Zarah Sultana

Karie Murphy

Formed in 2025 out of secret negotiations that included Corbyn, ex-Labour staff from the Corbyn era and their projects (Peace & Justice Foundation; Collective), as well as various independent left figures and MPs.

Initially garnered 800,000 sign-ups to a supporters mailing list, but only translated this into an initial 55,000 members, in part due to early bureaucratic in-fighting and crisis.

Arguably the largest anti-capitalist/socialist party since the Communist Party at its height in the 1940s.

Many members of other left political groups are members of Your Party, and it has various members' factions.

Being the main Corbyn-supporting Labour faction during his Labour leadership.

Progressive International (international)

James Schneider

Jon Lansman

Opposed, arguing for socialists to be in Labour. Other specific positions unclear.

Formed in 2015 by a small number of influential individual activists after Corbyn was elected Labour leader.

Many members of left political groups joined Momentum during Corbyn's leadership.

Membership peaked at 42,000 in 2018.

Activity and membership completely collapsed after Starmer's purge of Labour.

Being the socialist faction in the Green Party of England and Wales and supporting leader Zack Polanski.

Zoë Garbett

Steve Jackson

Argues for socialists to be in the Green Party instead. Other specific positions unclear.

Formed in 2024 by around 150 Green members.

Focus on youth activists and direct action on various causes.

Umbrella (British Hallamite federation, member of)

Rev21 (Roger Hallam's personal NGO, supported by)

None.

Formed in 2024 by Just Stop Oil members, in alliance with JSO and Assemble.

They focus their direct action on various issues including Palestinian liberation, climate change, and wealth inequality.

Direct action, pushing demands for democratic reform.

(None known)

None.

Formed in 2025 by Just Stop Oil members when that organisation dissolved.

They focus their 'direct action' on a specific demand for the replacement of the House of Lords by a sortitioned House of the People to legislate on wealth equality (namely tax).

Being the oldest Marxist organisation in Britain. And therefore having relative wealth.

Unique ideology of 'impossibilsm'.

Socialist Standard (newspaper/magazine)

World Socialist Movement (international)

Adam Buick

Opposed, on the basis that it advocates reforms within capitalism.

Formed in 1904 as a split from the Social Democratic Federation, Britain's first self-proclaimed socialist party.

They focus on publishing texts and standing a small number of electoral candidates over the movement and union activism of other socialist groups.

Their 'impossibilism' means they advocate stateless, moneyless communism and nothing less. The revolution will only be legitimate if this programme wins a substantial majority at election.

Being the first of a wave of organisations in the 2010s using direct action and arrests to protest the climate crisis.

Roger Hallam (previously)

None.

Formed in 2018 by several experienced climate campaigners.

Co-founder Roger Hallam was expelled in 2020, favouring more disruptive tactics.

Used direct action and attempted to maximise arrests until the end of 2022, moving to more traditional protest tactics.

Has offshoots across the world.

High-profile protests, such as after the murder of Sarah Everard.

None known.

None.

Formed in 2014 by members of UK Uncut, an anti-austerity protest group out of the early 2010s anti-austerity movement.

Focus on a variety of issues beyond the cuts in domestic and sexual violence support services, including prison and police abolition and Palestinian liberation.

They make use of modern anarchist-adjacent practices, such as consensus decision-making.

Men are not permitted at meetings.

Being one of the few visible anarchist groups in Britain.

Organise! (magazine)

International of Anarchist Federations (international)

Against all political parties, including Your Party.

Formed in 1986 as a merger between the Anarchist Communist Discussion Group and Syndicalist Fight.

Highly critical of trade unions.

Social conservatism

Vigorous defence of all Communist states, including North Korea.

Being confused with the Communist Party of Britain (Marxist-Leninist)

Proletarian (newspaper)

Lalkar (journal)

World Anti-Imperialist Platform (international)

Harpal Brar

Joti Brar

Ella Rule

Opposed, due to critiques of social democracy.

In 1969, the Association of Communist Workers was formed as a split from the Revolutionary Marxist–Leninist League, itself a Maoist 1965 split from the old Communist Party. The ACW joined Arthur Scargill's Socialist Labour Party as a faction, before their expulsion in 2004. The expelled organisation was renamed as the CPGB-ML.

Supported by/allied with Workers Party of Britain until 2022. The CPGB-ML's leader was deputy leader of the Workers Party during some of this time.

Are supportive of Palestinian liberation, unlike the Communist Party of Britain (Marxist-Leninist).

Distinctive mixture of: Marxism with anarchist-like focus on movements rather than parties, and network structure.

Fast Forward (festival)

Mark Fisher

Keir Milburn (formerly)

None.

Formed in 2012 in part by activists from the recent student movement.

Despite movement focus, was engaged with Corbynism.

Being the only explicitly anarchist trade union in Britain.

Direct Action (magazine)

International Workers' Association (international)

Opposed to all electoral parties, including Your Party.

Formed in 1994 by members of the anarchist Direct Action Movement.

Its website and social media are down, with only a small number of local branches active.

Being one of the only Maoist organisations that is also in favour of trans liberation and other progressive social causes.

International League of Peoples' Struggle (international, supportive of)

Opposed to all electoral parties, including Your Party.

Formed in 2024.

Somewhat supported by/supportive of the International League of Peoples' Struggle, an international founded by the Communist Party of the Philippines.

(Little known)

Laura Pidcock

Paul O'Connell

Ambivalent, due to strong critique of Labourism, social democracy, and electoralism.

Formed in 2024 by Laura Pidcock (ex Labour MP), Paul O'Connell (legal academic) and others.

Aims to "build and provide the basis for a mass, working-class party in Britain" through community and workplace organising.

Critiques all other sects for their disconnect from the working class.

Its name, giving it implicit authority and connecting it to the global Black Lives Matter movement.

Festival of Collective Liberation (public conference)

Anti Racist Movement (membership organisation founded by BLMUK)

Project Timbuktu (education programme)

Josh Virasami

None specifically.

Some number of members involved in the founding of the Organising for Popular Power members' faction in Your Party.

Formed in 2016 by a number of individual activists, including members of the London Black Revolutionaries.

Received over a million pounds during the 2020 George Floyd Uprisings.

Is explicitly anti-capitalist, unlike BLM organisations in some countries.

Not a member of the international Black Lives Matter Global Network, led from the USA.

Being an anti-imperialist organisation specifically for Cypriots.

International League of Peoples' Struggle (international)

International Coordination of Revolutionary Parties and Organizations (international)

None.

Formed in Britain in late 2010s/early 2020s, it is slightly unclear.

It is an international organisation, with members in different countries.

Historically notable international union covering all workers, rather than a specific industry.

Wildcat (newspaper)

International Confederation of Labour (international)

None.

Formed in the USA in 1905 by socialists and anarchists from various political groups who opposed the moderate policy of the American Federation of Labor. Formed in Britain in 1913.

The regional body of the IWW covering Britain is WISE-RA (Wales, Ireland, Scotland, England Regional Administration).

One of the only far-left organisations to operate in both Ireland and Britain.

Emphasis on workplace organising.

Use of salting as a tactic.

Their book 'Class Power on Zero Hours' about their 2014-2020 organising project in the food manufacturing and logistics sector.

Various publications depending on workplace, including Workers' Runway, Vital Signs and WorkersWildWest.

Opposed, due to opposition to electoral politics and emphasis on the primacy of workplace struggle.

Formed in 2013 by activists previously involved with Feminist Fightback and Commune.

Unlike many groups, they try to explore the technical possibilities of communist transformation based on their organising projects.

Being associated with serial rapist and party leader Gerry Healey until his expulsion in 1985.

Use of violence against opponents on the left (during the Healy era).

The News Line (newspaper)

International Committee of the Fourth International (international) (disputed by the Socialist Equality Party)

Revolutionary Books (publisher)

Young Socialists (youth section)

Gerry Healy (formerly)

Vanessa Redgrave (formerly)

Frank Sweeney

Sheila Torrance

Generally ignores Your Party, calling for socialists to join the WRP.

Formed in 1947 as a split from the original Revolutionary Communist Party as 'The Club' (subsequently the Socialist Labour League), practising entryism in Labour. The group was proscribed by Labour in 1959, and eventually changed its name to the WRP in 1973.

Supported and received money from Gaddafi.

Its cultish leader Gerry Healy was expelled in 1985 and exposed as a serial rapist. The current party condemns him.

The party's prominence mostly collapsed after this.

Stands candidates in elections.

Defending celebrity abusers such as Harvey Weinstein and Roman Polanski.

Having an AI that you can talk to.

World Socialist Website (WSWS) (online newspaper)

International Committee of the Fourth International (international) (disputed by the Workers Revolutionary Party)

International Youth and Students for Social Equality (youth section)

Mehring Books (publisher)

Socialism AI (AI chat)

David North

Dave Hyland

Tom Scripps

Opposed, calling for socialists to join SEP instead.

Formed in 1986, after the crisis in the Workers Revolutionary Party, as the 'International Communist Party' changing its name in 1996. Formed in Britain in 2010.

All other parties in the same international are called Socialist Equality Party, but the most dominant is the American party.

Members sometimes wear suits or other formal-wear.

Often calls all other left organisations and movements 'pseudo-left'.

Conservativism (on immigration, transphobia, islamophobia, the defence industry, the family, etc.)

Being confused with the Communist Party of Great Britain (Marxist-Leninist).

Workers (newspaper)

Reg Birch

None.

Formed in 1968 by a split in the old British Communist Party, siding with China in the Sino-Soviet split (and subsequently supporting Albania in the Sino-Albanian split).

Calls for the 'self-reliance' of Britain, supporting British industry and opposing the EU.

Takes a 'both sides to blame' type stance on Palestine, unlike the Communist Party of Great Britain (Marxist-Leninist).

Being one of the very few independent, socialist political groups in Britain specifically for Jewish people.

Jewish Socialist (magazine)

International Jewish Labor Bund (international, formerly)

David Rosenberg

None.

Formed in the 1970s by ex- and current members of the Labour Party and Communist Party.

As per Bundism, stresses Jewish belonging to a diaspora rather than Israel, and encourages the speaking of Yiddish rather than Hebrew.

(Little known).

None known.

None.

Formed in 2006 and 2007, via a number of conferences, in part organised by the Alliance for Workers' Liberty's student campaign front of the time, the Education Not for Sale network.

They make use of modern anarchist-adjacent practices, such as consensus decision-making.

Men are not permitted at organising meetings.

One of very few left communist cadre organisations in Britain.

Aurora (newspaper)

Revolutionary Perspectives (journal)

Internationalist Communist Tendency (international)

None. Assumedly opposed due to opposition to all parliamentarism.

Formed in 1975, by a merger of two left communist groups, the trade union of Workers' Voice, based in Liverpool, and Revolutionary Perspectives, a group based in the North of England and Scotland.

Has historic beef with the other left communist cadre organisation, World Revolution.

As per many left communist organisations, is opposed to all nationalism, including national liberation movements, such a Palestinian liberation.

Calls other socialist groups part of the 'capitalist left'.

Being a left Jewish organisation that disaffiliated from the Labour Party.

Naomi Wimborne-Idrissi

None. But well-known member Naomi Wimborne-Idrissi stood for Your Party's collective leadership body in 2026.

Formed in 2017 as Jewish Voice for Labour for left-wing Jews in the Labour Party, and supported Jeremy Corbyn against claims of anti-semitism.

Disaffiliated from Labour in 2025, as a result of the Labour government continuing support of Israel's genocide.

Being the unofficial international youth wing of the underground Hoxhaist Marxist–Leninist Communist Party in Turkey.

Material support for Rojava in the Syrian Civil War.

Young Struggle (magazine)

Marxist–Leninist Communist Party (unofficial parent organisation, in Turkey)

Ivana Hoffmann

Ambivalent. Somewhat supportive and interested in local organising, but as long as YP is not a revolutionary party, it is "guaranteed to fail".

Formed across Europe in 2010 by the youth wing of the Confederation of Oppressed Immigrants of Europe (AvEG-Kon), which in Britain was the Refugee Workers Cultural Association (RWCA) or GİK-DER, which supports Turkish and Kurdish migrants.

Vocally pro-Palestine and pro- trans liberation, unlike some other anti-revisionist Marxist-Leninist organisations in Britain.

Being a previous attempt to build a left-of-Labour party.

Association with union leaders Arthur Scargill.

Standing in general elections.

Arthur Scargill

Jim McDaid

Allistair Lomax

Generally opposed, in part due to Your Party's lack of clarity on the EU, which the SLP strongly opposes.

Formed in 1996 by Arthur Scargill as a left-of-Labour alternative when Tony Blair's Labour Party amended 'Clause Four', widely understood to be its constitutional commitment to socialism.

The SLP had union affiliations at one time.

Dwindled quickly after expulsions of other groups, bans on factions, and a centralisation of power in Scargill and his allies.

Still stands candidates in general elections.

Occasionally appearing on general election ballots.

Green Socialist (journal)

Mike Davies

Ambivalent, but critical of its lack of emphasis on the climate crisis, and the closeness of its politics to Labour.

Formed in 2002 by a merger of the Green Socialist Network (itself a post- Communist Party of Great Britain project) and the Leeds Left Alliance (largely made up of ex-Labour members).

Mostly present in Leeds.

Being the faction inside Labour representing its 'soft left' tendency.

Andy Burnham

Neil Lawson

Alex Sobel

Jeremy Gilbert

None.

Formed in 2025 by members of think tank Compass and of soft left Labour faction Open Labour.

Does work with Momentum on specific practical issues, mainly tackling the dominance of the Starmer-led right wing of the Labour Party.

Being the international youth wing of the New Patriotic Alliance in the Philippines.

New Patriotic Alliance/Bagong Alyansang Makabayan (parent organisation in the Philippines)

International League of Peoples' Struggle (international)

None.

Formed in the Philippines in 1998 as an international organisation, and in Britain in 2022 by Filipino youth activists.

Espouses the ideology of 'National Democracy' which is the specific Maoist position of the New Patriotic Alliance, and opposes imperialism, feudalism, and "bureaucrat capitalism",

Being a radical organisation specifically for South Asians.

International League of Peoples' Struggle (international)

None.

Formed in the late 2010s, though exactly when is unclear, as The Rights Collective. Then renamed in 2024.

One of very few left communist cadre organisations in Britain.

World Revolution (newspaper)

International Review (journal)

International Communist Current (international)

None. Assumedly opposed due to opposition to all parliamentarism.

Formed in 1974 in a split from Solidarity, and was part of the formation of the ICC in 1975.

As per many left communist organisations, is opposed to all nationalism, including national liberation movements, such a Palestinian liberation.

Being a socialist organisation specifically for Bengalis and Bangladeshis.

International League of Peoples' Struggle (international)

Save Brick Lane Campaign (campaign, key participant in)

None.

Formed in 2017 by young British Bengali/Bangladeshi organisers in London, inspired by the Asian Youth Movements of the 1970s.

Being one of the few visible anarchist groups in Britain.

Opposition to 'identity politics' vs class struggle, and transphobia (although officially renounced in 2019/21).

Jackdaw (newspaper)

Stormy Petrel (journal)

Network of Anarchist Internationalists (international)

Rebel City (London-based publication, key participant in)

Opposed to all political parties, including Your Party.

Formed in 2018 as a split from the Anarchist Federation due to the ACG's defence of transphobe Helen Steel when she was physically confronted at the 2017 Anarchist Bookfair.

In 2019 and 2021, they put out statements asserting opposition to transphobia, moreso with each statement (though suffering a split in 2022). They were accepted back into the Anarchist Bookfair in 2023 due to these changes and a changing membership.

Claim to be more outward-facing than other anarchist groups, and their propaganda is sometimes more visible.

(Little known)

kommunistischepartei.de / Communist Party (Germany) (key ally of)

Opposed, due to critiques social democracy and electoral politics.

Formed in 2025 largely by ex members of the Revolutionary Communist Group.

Aims to create a communist party, which it sees itself as the possible embryo of.

Inherits from the RCG a very high level of requirements on members' activity and discipline.

Appears ambivalent about the medicalisation of trans people.

(Little known)

Network of Anarchist Internationalists (international)

Opposed to all political parties, including Your Party.

Formed in 2022 after a split from the Anarchist Communist Group due to 'transphobia not being challenged robustly enough' within the ACG and "a very small minority were using what could be considered transphobic language." Formed with some lapsed members of the Anarchist Federation and Solidarity Federation.

Sometimes standing for elections despite small size.

Being affiliated to the larger and more notable Socialist Workers Party (USA).

Extreme Zionism

Transphobia

The Militant (newspaper of the international)

Pathfinder tendency (international)

None.

Formed in 1988 as a split from Socialist Action.

Very pro-Cuba

Previously maintained a bookshop in London, originally in The Cut, then Bethnal Green Road.

Adopts extreme Zionist positions, such as supporting Netanyahu's war on Gaza to 'destroy Hamas'.