Edward Grant was a South African Trotskyist who spent most of his adult life in Britain. He was a founding member of the group Militant and later Socialist Appeal.

Alan Woods is a British Trotskyist political theorist and author. He is one of the leading members of the International Marxist Tendency (IMT) as well as of its British affiliate group Socialist Appeal. He is political editor of the IMT's In Defence of Marxism website. Woods was a leading supporter within the Militant tendency within the Labour Party and its parent group the Committee for a Workers' International until the early 1990s. A series of disagreements on tactics and theory led to Woods and Ted Grant leaving the CWI, to found the Committee for a Marxist International in 1992. They continued with the policy of entryism into the Labour Party. Woods has expressed particularly vocal support for the Bolivarian Revolution in Venezuela, and repeatedly met with the Venezuelan President Hugo Chávez, leading to speculation that he was a close political adviser to the president.