More than 4,000 people asked their MPs to support the maintenance of sanctions against South Africa on 27 February 1990. The lobby achieved a record coverage, with constituents lobbying 495 of 523 MPs sitting for English constituencies and a majority of Scottish and Welsh MPs. The day before Nelson Mandela’s release, Prime Minister Margaret Thatcher announced that Britain would end its limited restrictions on new investment and tourism. The lobby was organised by the Southern Africa Coalition, a broad-based grouping of church organisations, trade unions, overseas aid agencies and the AAM.