In the mid-1960s Williams joined forces with a small group of London-based Caribbean intellectuals and artists to found the Caribbean Artists Movement (CAM). The other founding members of the movement were: Kamau Brathwaite, Wilson Harris, Louis James, Evan Jones, John La Rose, Ronald Moody, Orlando Patterson and Andrew Salkey. Active for six years (from 1966 to 1972), CAM took the form of meetings, readings, exhibitions, seminars and conferences, which sought to provide a forum for Caribbean artists to exchange ideas, address particular artistic issues, and discuss each other's work. It began as a series of small, private meetings held in members' homes but quickly expanded into larger, public events.