Liquid crystal displays were developed in 1972 in conjunction with the Royal Radar Establishment, where Geoffrey Dummer invented the idea of the integrated circuit in 1952. It was based in Malvern, and became the Royal Signals and Radar Establishment, which developed thermal imaging and pyroelectric infrared detectors, and is now a large site owned by QinetiQ. Morgan Motor Company is in Malvern Link; nearby is Desire Petroleum. Commsoft RMS is in Evesham. For many years Group 4 Security, which was the largest security company in Europe, had its headquarters in Broadway off the A44, on the edge of the Cotswolds; G4S Integrated Services now has its HQ there.