TUC staff and members of the film technicians union ACTT picketed South Africa House on 20 January 1977. They were supporting the worldwide Week of Trade Union Action against Apartheid called by the International Confederation of Free Trade Unions (ICFTU) from 17 to 24 January. Among the protesters were Alan Sapper, General Secretary of ACTT, and Charles Grieve, General Secretary of the Tobacco Workers Union.