The leader of Southwark Council in south London, Anne Matthews, joined a picket of a local Shell garage in May 1987. The picket was part of an international week of action, 11–17 May, when the AAM’s London Committee organised demonstrations outside over 100 Shell garages in London. Shell was joint owner of one of South Africa’s biggest oil refineries. It was a lead company in South Africa’s coalmining and petrochemicals industries. The AAM launched its ‘Boycott Shell’ campaign on 1 March 1987.