Who are hawker siddeley switchgear? Hawker Siddeley Switchgear Ltd is a major international manufacturer of a range of indoor and outdoor medium voltage distribution and transit switchgear.When did hawker siddeley become brush? In 1957, Hawker Siddeley group acquired the Brush Group, and in 1973 Brush Switchgear acquired Bowthorpe's power equipment pision, with factories at Bridgend and Banbury. In 1991 South Wales Switchgear merged with Brush Switchgear to form Hawker Siddeley Switchgear Limited..What is hawker siddeley aviation limited? Hawker Siddeley Aviation Limited was the identity for the aircraft sector of the Hawker Siddeley Group between 1948 and 1959.Who is the manufacturer of switchgear for brush? Brush Switchgear - (Brush Electrical Engineering company founded 1888) - pioneers of vacuum switchgear. Hawker Siddeley Switchgear Pty Ltd in Australia (HSSA) - (in operation since 1964) - subsidiary of Hawker Siddeley Switchgear.