Hawker Siddeley was a group of British manufacturing companies engaged in
aircraft production. Hawker Siddeley combined the legacies of several British aircraft manufacturers, emerging through a series of
mergers and acquisitions as one of only two such major British companies in the 1960s. In 1977, Hawker Siddeley became a founding component of the nationalised
British Aerospace (BAe). Hawker Siddeley also operated in other industrial markets, such as
locomotive building (through its ownership of
Brush Traction) and
diesel engine manufacture (through its ownership of
Lister Petter). The Company was once a constituent of the
FTSE 100 Index.