Hawker Siddeley Trident 1978, 117 Tridents had been produced. BEA's successor British Airways withdrew its Tridents by the mid-1980s. Trident services ended in China in the early 1990s. In 1953, as British European Airways (BEA) introduced the world's first turboprop-powered civil airliner – the Vickers Viscount – into passenger service, the operator was already considering what would be required of a potential successor. Following the entry into service of jet airliners in 1952, many airline managers and economists remained sceptical and advocated turboprop airliners as replacements of piston-engined airliners. In 1953, while several manufacturers across the world were investing in pure jet-powered aircraft,
Joan Vickers, Baroness Vickers on 25 March 1904 and became one of their partners at their office at 4 Moorgate Street. At the end of the First World War, all the German stockbrokers were forced to resign. In 1917 he set up his own firm, Vickers, da Costa, which counted Sir Winston Churchill among their clients. Her brother, Ralph Vickers was later Senior Partner of the firm. Vickers was educated at St Monica's, Burgh Heath, Surrey, and in Paris. She was trained as a Norland Nurse, working in the Margaret Macdonald and Mary Middleton Hospital, Notting Hill and was active in politics in Battersea