Hawker Siddeley HS 748 Paper ended most military manned-aircraft development in the UK, and Avro decided to re-enter the civilian market. The Vickers Viscount had the larger end of the short-haul market, and Avro therefore decided to design a smaller regional airliner powered by two Rolls-Royce Dart turboprop engines, intended to replace the many DC-3 Dakotas that were by then reaching the end of their economic lifespan. Original plans were for a 20–30 seat aircraft with a similar configuration to the Fokker F27, but talks with potential customers soon led to a low-wing 40-seat design being chosen for the 748 project. Avro was not
Vickers-Armstrongs A1E1 tank. One of the company's most important designs was the Valentine Infantry Tank, produced in the thousands in World War II. The military vehicle manufacturing interests were divested into Vickers plc, and would later pass to Alvis Vickers, now part of BAE Systems Land and Armaments. "Notable Vickers-Armstrongs military vehicles include;" Vickers formed its Aviation Department in 1911. The aircraft interests of Armstrong Whitworth were not acquired in the merger and later passed to the Hawker Aircraft group. In 1928 the Aviation Department became Vickers (Aviation) Ltd and soon after acquired Supermarine Aviation Works, which became the Supermarine Aviation