Editing Chelmsford (section)

===English Electric Valve Company===
{{Main|English Electric Valve Company}}
The Waterhouse Lane–based company began in the early 1940s as a part of the [[Marconi Electronic Systems|Marconi]] group, manufacturing magnetrons for defence radar systems. The company was first registered as a separate company in Chelmsford, [[Essex]] in 1947 under [[Simeon Aisenstein|Simeon Serge Aisenstein]].<ref name="firedirect">[http://www.firedirect.net/Profiles/0802_e2v/0802_001.htm Fire Direct company profile] {{webarchive |url=https://web.archive.org/web/20090923162457/http://www.firedirect.net/Profiles/0802_e2v/0802_001.htm |date=23 September 2009 }}. Retrieved 19 October 2010</ref> Its initial name was the '''Phoenix Dynamo Co Ltd''', though it immediately changed its name to English Electric Valve Company Ltd.

In 1959 Bob Coulson established [[Traveling-wave tube]] and [[Microwave tube]] sections and they were producing ceramic hydrogen [[thyratron]]s as well.<ref name="firedirect" /> By this time EEV was the largest hi-tech manufacturing company in the UK.<ref>[http://www.refrigeration-uk.com/english-electric.asp Hawkes Refrigeration website] {{webarchive |url=https://web.archive.org/web/20060816010059/http://www.refrigeration-uk.com/english-electric.asp |date=16 August 2006 }}. Retrieved 2 July 2008</ref> A year later they won an [[Technology & Engineering Emmy Award|EMMY award]] for outstanding contribution to Electronics Technology in developing the 4½" orthicon tube.

In 1961 they acquired [[Associated Electrical Industries]] Valve business based in [[Lincoln, Lincolnshire|Lincoln]]. Sir [[Charles Oatley]] was a director of the company from 1966 to 1985.<ref>[https://archive.today/20120714232343/http://janus.lib.cam.ac.uk/db/node.xsp?id=EAD/GBR/0014/OATL The Papers of Sir Charles Oatley] accessed 2 July 2008</ref> In 1962, EEV opened its first office in America in [[Buffalo, New York|Buffalo]], NY. In the 1970s EEV collaborated with [[QinetiQ]] in the development of the pyroelectric [[vidicon]], the first [[thermal imaging]] detector.<ref>''Engineering Technology'', volume 5, No 9; November 2002</ref> The company has received 13 [[Queen's Awards for Enterprise|Queen's Awards for Technology]] in its history, most recently in 2006 for low light imaging devices and in 2004 for thyratrons for cancer radiotherapy treatment. In 1972, they opened an office in Paris and in 1977 they opened another in New York; this time in [[Elmsford, New York|Elmsford]]. 
Keith Attwood, e2v's CEO joined in 1999, as MD of EEV, after a short period as Marconi Applied technologies, the company was renamed to e2v technologies in 2002 as part of a management buy out supported by 3i following the collapse of the Marconi group. Following further growth under 3i, in 2004 the company floated on the [[London Stock Exchange]].

In 2017, e2v was acquired by US company Teledyne Technologies and changed its name to [[Teledyne e2v]], 70 years after its registration as a Chelmsford-based company. As of 2022, Teledyne e2v continues its operations at the Waterhouse Lane site.