Editing Marconi Electronic Systems (section)

{{Short description|Defence arm of the defunct General Electric Company (1897-1999)}}
{{Use British English|date=April 2016}}
{{Use dmy dates|date=April 2016}}
{{Infobox company
| name = Marconi Electronic Systems Limited
| logo = GEC Marconi logo.svg
| logo_size = 250px
| fate = Merged with [[British Aerospace]]
| successor = [[BAE Systems]]
| foundation = {{sda|1897|07|20|df=y}} (as [[Marconi Company]])
| defunct = {{end date|1999|11|30}}
| location = [[Chelmsford]], England
| key_people = [[Guglielmo Marconi]]<br/>[[Arnold Weinstock]]
| parent = [[General Electric Company]]
}}
'''Marconi Electronic Systems Limited''' ('''MES'''), or '''GEC-Marconi''' as it was until 1998, was the defence arm of [[General Electric Company]] (GEC). It was split off from GEC and bought by [[British Aerospace]] (BAe) on 30 November 1999 to form [[BAE Systems]]. GEC then renamed itself [[Telent|Marconi plc]].

MES exists today as '''BAE Systems Electronics Limited''', a subsidiary of BAE Systems, but the assets were rearranged elsewhere within that company. MES-related businesses include [[BAE Systems Submarine Solutions]], [[BAE Systems Surface Ships]], [[BAE Systems Insyte]] and [[Selex ES]] (now a part of [[Leonardo (company)|Leonardo]]).