1946, the party split. Two-thirds, including the original leadership, defected to Labour but were unable to persuade the remainder to disband. Tom and Kitty Wintringham left and Tom joined the Labour Party, though kept friendly with CW members and kept an active interest the party and the development of its theory and stance until his death, Kitty remained informally involved with The Libertarian until she died in 1963. Many of the new leadership then elected had joined when in the armed forces among which prominent figures of the Cairo Forces Parliament. During the 1950s, the party made preparations to contest Oxford, with Douglas Stuckey as prospective candidate, but these were never brought to fruition. For the remainder of its existence it became, de facto, a pressure group, its organisation evolving, and generally contracting, as old age took its toll of the leading figures. In the postwar period, CW was active in some domestic and international campaigns; it developed worldwide contacts. For Israel and the less-than-state of Palestine, it advocated two internationally recognised states. At home, it helped to form the Industrial Common Ownership Movement (ICOM) and co-campaigned for small parties to be allowed to make party political broadcasts. Through the latter campaign it developed close links with Plaid Cymru (sharing a syndicalist tradition) and the Scottish National Party. The active collaboration led to the joint publication in 1956 of Our Three Nations. This advocated very great devolution in the United Kingdom: a 'confraternity' of self-governing states. CW also favoured regional government in England and was sympathetic to Mebyon Kernow. Members such as Banks joined the Wessex Regionalists. Executive Committee members played an active, at times leading, role in these movements, especially during the 1980s. Others were active in nascent environmentalism, including its then main political party, the Ecology Party. In 1992, surviving members and political associates met in London for a 50th anniversary lunch. Weeks later, the death of W.J. 'Buck' Taylor, for many years the Secretary, called into question the ability to continue. Common Wealth resolved to dissolve at a Cheltenham meeting the next year. Archives and key accounts The archives are kept by the University of Sussex. The early history was the subject of the doctoral thesis of Angus Calder. Detail of the party's formation and by-elections can be found in a biography of Wintringham, The Last English Revolutionary. The tussle between Acland's didactic Anglican-rooted Christianism and Wintringham's