(This article is about the 1988 founded joint venture between GEC and Plessey which would evolve into Marconi Communications. For the 1998 founded subsidiary of GEC (later in 1999, a subsidiary of Marconi plc), see Marconi Communications.) GEC Plessey Telecommunications (GPT) was founded in 1988 as a joint venture between GEC and the British electronics, defence and telecommunications company Plessey. A joint holding company of GEC and the German conglomerate Siemens AG acquired Plessey a year later, and GPT was converted into a 60/40 GEC/Siemens joint venture.