The group consists of minutes and papers of the Democratic Left and the Democratic Left Wales / Chwith Democrataidd Cymru, 1978-1999, papers relating to the reorganisation of the CPGB and the new constitution of the Democratic Left, 1979-1998, Democratic Left financial papers, 1989-1998, and publications, 1990-1999; with papers relating to the Green Socialist Network, 1986-1999.

Papers and ephemera relating to the Peace Movement, 1976-[1990s]; the Labour Party, 1975-1996; Trade Union activities, [c. 1980s]-[1990s]; the Peace and Nuclear Disarmament movement, 1976-[1990s], including the Greenham Common Peace Camp, the 'Peace Marches' from Cardiff to Greenham Common, the camp at Brawdy Royal Air Force base, Pembrokeshire, and other women's peace camps, and the Campaign for Nuclear Disarmament (CND); Nuclear Energy and Green Movement, 1973-[1990s]; feminist issues, 1958-1990; issues including animal rights, Europe, the NHS, pensions, public transport, the Poll Tax, unemployment and the United Nations, [c. 1990s]; posters relating to the activities of the various groups and societies supported by them, [c. 1980s]-[1990s], regarding numerous issues, campaigns and events, including the peace movement, the environment, human rights and the 1989 `War on Want' Benefit Concert for Central America, and correspondence with MPs, 1982-1992.

Papers of Green Party Wales collated by one-time chairman Chris Simpson, including 'A green economic policy for Wales', and 'Wales Green Party & Plaid Cymru', a history and background paper by Chris Simpson, and agendas and minutes from meetings.