industry in the United Kingdom GEC-Marconi scientist deaths conspiracy theory – Article about the 25+ defence employees who have died in mysterious circumstances since the early 1980s CMC Electronics – formerly the Canadian Marconi Company, once part of EE/GEC & BAe References External links Marconi Electronic Systems Part 1 "Forty Years of Marconi Radar from 1946 to 1986", GEC Review, Volume 13, No. 3, 1998 Boeing, Lockheed Martin, BAE Systems, and Raytheon to create B2B exchange for the aerospace and defense industry, powered by Microsoft Aircraft component manufacturers of the United Kingdom Avionics companies BAE Systems subsidiaries and divisions British companies established in 1897 Companies based in Chelmsford Defunct technology companies of the United Kingdom Electronics companies of the United Kingdom Former defence companies of the United Kingdom General Electric Company Guglielmo Marconi Manufacturing companies established in 1897 Radar manufacturers Science and technology in Essex 1999 mergers and acquisitions