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).
Hawker Siddeley juga beroperasi di pasar industri lainnya, seperti lokomotif bangunan (melalui kepemilikan dari Brush Traction) dan pembuatan mesin diesel (melalui kepemilikan dari Lister Petter).