In 1971 the Conservative government agreed to sell seven Westland Wasp helicopters to South Africa. This leaflet publicised a march to the Westland factory in Hayes, near London. Trade unionists from DATA (Draughtsmen’s and Allied Technicians’ Association) refused to work on the contract. The helicopters were supplied, but because of widespread opposition these were the only weapons exported to South Africa under the 1970–74 Conservative government.