The Plessey Company plc was a British electronics, defence and telecommunications company. It originated in 1917, growing and diversifying into electronics. It expanded after World War II by acquisition of companies and formed overseas companies.
R1155 receiver on top of T1154 transmitter
Plessey PDRM82F geiger counter
Plessey Semiconductors factory at Cheney Manor, Swindon in 1982. The factory housed both bipolar and MOS lines. A small part of the canteen facilities (which had five grades of service) for all Plessey employees is visible on the right of the image, since demolished around 2010
Plessey Semiconductors factory at Cheney Manor, Swindon, on 17 July 2012, undergoing demolition
The General Electric Company (GEC) was a major British industrial conglomerate involved in consumer and defence electronics, communications, and engineering.
Hugo Hirst, c. 1930
Early switchboard, c. 1888