London Transport's Silver Jubilee AEC Routemaster buses are launched.

The London Transport Executive was the executive agency within the Greater London Council, responsible for public transport in Greater London from 1970 to 1984. In common with all London transport authorities from 1933 to 2000, the public name and operational brand of the organisation was London Transport.

The Silver Jubilee of Elizabeth II marked the 25th anniversary of the accession of Queen Elizabeth II on 6 February 1952. It was celebrated with large-scale parties and parades throughout the United Kingdom and the Commonwealth throughout 1977, culminating in June with the official "Jubilee Days", held to coincide with the Queen's Official Birthday. The anniversary date itself was commemorated in church services across the land on 6 February 1977, and continued to be for the rest of that month. In March, preparations started for large parties in every major city of the United Kingdom, as well as for smaller ones for countless individual streets throughout the country.

The AEC Routemaster is a front-engined double-decker bus that was designed by London Transport and built by the Associated Equipment Company (AEC) and Park Royal Vehicles. The first prototype was completed in September 1954 and the last one was delivered in 1968. The layout of the vehicle was conventional for the time, with a half-cab, front-mounted engine and open rear platform, although the coach version was fitted with rear platform doors. Forward entrance vehicles with platform doors were also produced as was a unique front-entrance prototype with the engine mounted transversely at the rear.