Members of the group built sets, made props and costumes, rigged sound and light systems, managed front of house, acted, sang and played, all while holding daytime jobs.
Throughout their existence they were heavily involved in left wing politics, performing at trade union functions, rallies, picket lines, benefits and especially anti-Vietnam war events.
They created songs, plays and other events in a similar manner to the Critics, culminating in the Vietnam Victory Show of April 1975 which celebrated the final liberation of Saigon, or Ho Chi Minh City.
Former Critics Group members performing, writing, recording, teaching and collecting include Michael Rosen, Frankie Armstrong, Sandra Kerr, John Faulkner, Jack Warshaw, Doc Rowe and Bob Blair.
As revealed in privately held recordings of Critics Group meetings (as discussed in a 2012 BBC radio programme presented by Martin Carthy[5]), Ewan MacColl had developed strong views about the skill required to learn and perform folksongs, the extensive untapped range of the repertoire, composing new songs and how to sing them.
The 2017 session, joined by Peggy Seeger included Jim and Sal O'Connor, Frankie Armstrong, Brian Pearson, Sandra Kerr, Richard Humm and Jack Warshaw.