The General Electric Company, or GEC, was a major UK-based industrial conglomerate involved in consumer and defence electronics, communications, and engineering. The company was a constituent of the FTSE 100 Index.

In December 1999, GEC's defence arm, Marconi Electronic Systems, was amalgamated with British Aerospace to form BAE Systems. The rest of GEC continued as Marconi plc. The financial troubles that followed the bursting of the dot-com bubble in 2001 led to the restructuring in 2003 of Marconi plc into Marconi Corporation plc.