Its head office was in Chippenham, Wiltshire, where it manufactured a variety of mechanical and electrical/electronic railway signalling equipment.

It had six other UK offices in Croydon, York, Birmingham, Crawley, Swanley and Glasgow.

Westinghouse was the largest signalling design and control engineering company within the UK.

Its largest contract was awarded in 2004: a ten-year £850m re-signalling of eight London Underground lines for the Metronet Public-Private Partnership.

Westinghouse produces a variety of signalling and railway control equipment, including: