Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 143,024 pages of information and 229,410 images on early companies, their products and the people who designed and built them.
British Telecommunications Systems
1979 Formed by British Telecom, GEC, Standard Telephones and Cables and Plessey Co to market overseas the System X exchange, an advanced electronic telephone exchange. developed at a cost of £200 million.
By 1982 the company still had no orders for System X.