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Company Location Country
AAR International (Waddington) Lincoln United Kingdom
Active Electronics plc High Wycombe United Kingdom
ACW Technology Ltd Southampton United Kingdom
Aero Engine Controls Ltd Birmingham United Kingdom
AgustaWestland Yeovil United Kingdom
Alter Technology TUV Nord  Fareham United Kingdom
Anglia Components Ltd Wisbech United Kingdom
APC plc Rochester United Kingdom
Astute Electronics Ltd Ware United Kingdom
AT Engine Controls Ltd Worsley United Kingdom
A-Tec International Ltd Sevenoaks United Kingdom
Aviation Training International Ltd Sherborne United Kingdom
Avnet Memec Thame United Kingdom
AWE Aldermaston United Kingdom
Avon Magnetics Ltd Christchurch United Kingdom
BAE Systems Blackburn United Kingdom
BAE Systems Chelmsford United Kingdom
BAE Systems Farnborough United Kingdom
BAE Systems Preston United Kingdom
BAE Systems (Operations) Ltd Chelmsford United Kingdom
BAE Systems Australia Ltd Nowra Australia
BAE Systems Electronics & Integrated Solutions Rochester United Kingdom
BAE Systems Insyte Chelmsford United Kingdom
BAE Systems Land Systems Ltd Usk United Kingdom
BAE Systems Surface Ships Portsmouth United Kingdom
BAE Systems, Global Combat Systems Barrow In Furness United Kingdom
BAE Systems, Manufacturing Technology, Inc Fort Walton Beach USA
BNS Nuclear Services Ltd Leicester United Kingdom
BP Staines United Kingdom
British Energy Generation Limited Barnwood United Kingdom
British Telecommunication Plc (BTexact) Ipswich United Kingdom
Cameron International Houston USA
Cassidian Test & Services UK Wimbourne United Kingdom
Charcroft Electronics Ltd Llanwrtyd Wells United Kingdom
Chevron ETC Aberdeen United Kingdom
CMCA (UK) Ltd Worcester United Kingdom
Cobham Antenna Systems Marlow United Kingdom
Cobham Microwave Systems Milton Keynes United Kingdom
Cobham Mission Equipment Wimborne United Kingdom
Compelet Milan Italy
Cranfield University Cranfield United Kingdom
Crestwood Technology Group Yonkers USA
Defense Microelectronics Activity (DMEA) Bexhill On Sea United Kingdom
DSO National Laboratories Singapore Singapore
e2v Technologies St Egreve France
Eltek Semiconductors Dartmouth United Kingdom
Esterline Racal Acoustics Harrow United Kingdom
Eurofighter Jagdflugzeug GmbH Hallbergmoos Germany
Fokker Services BV Nieuw - Vennep Netherlands
FSL Aerospace Ltd Uxbridge United Kingdom
GE Aviation Cheltenham United Kingdom
GEIP Ltd Towcester United Kingdom
GE Oil & Gas Bristol United Kingdom
General Dynamics UK Ltd Blackwood United Kingdom
General Dynamics UK Ltd St Leonards On Sea United Kingdom
Goodrich Power Systems Pitstone United Kingdom
Hewlett Packard Bristol United Kingdom 
IHS Bracknell United Kingdom
IHS Paris France
ILSmart Memphis USA
Invensys Rail Limited Chippenham United Kingdom
IQD Frequency Products Limited Crewkerne United Kingdom
J + S Ltd Barnstaple United Kingdom
Kidde Graviner Ltd Slough United Kingdom
Kingsbeech Limited Cirencester United Kingdom
Knorr-Bremse Rail Systems (UK) Ltd Melksham United Kingdom
Lockheed Martin UKIS Havant United Kingdom
London Underground London United Kingdom
MBDA UK Ltd Stevenage United Kingdom
Microsemi Corp Ennis Ireland
Micross Ltd Alton United Kingdom
MOD Glasgow United Kingdom
National Aerospace Laboratory NLR Amsterdam The Netherlands
National Air Traffic Services Ltd Fareham United Kingdom
Paragon Electronic Components PLC Kempston United Kingdom
PartMiner Leatherhead United Kingdom
Pascall Electronics Ltd Ryde United Kingdom
Princeps Electronics Ltd Harlow United Kingdom
Rebound Electronics UK Ltd Newbury United Kingdom
Redcliffe Ltd Bristol United Kingdom
Renishaw Plc Wotton-under-Edge United Kingdom
Retronix Ltd Coatbridge United Kingdom
Rhopoint Components Ltd Oxted United Kingdom
Rochester Electronics St Neots United Kingdom
Rolls Royce Submarines Derby United Kingdom
Rolls-Royce Derby United Kingdom
Royal Netherlands Navy Den Helder 1780 CA Netherlands
Selex Galileo (UK) Edinburgh United Kingdom
Selex Galileo Ltd Luton United Kingdom
Selex Sistemi Integrati Giugliano In Campania Italy
Selex Systems Integration Ltd Portsmouth United Kingdom
Sellafield Ltd Seascale United Kingdom
Semelab Ltd Lutterworth United Kingdom
Semitronics Basingstoke United Kingdom
SIL Bristol United Kingdom
STS Defence Ltd Gosport United Kingdom
SiliconExpert Technologies Santa Clara  USA
Solid State Supplies plc Paddock Wood United Kingdom
Systems Engineering & Assessment Ltd (SEA) Beckington United Kingdom
TTI High Wycombe United Kingdom
Thales Aerospace UK Crawley United Kingdom
Thales Communications Crawley United Kingdom
Thales Corporate Services EPM Weybridge United Kingdom
Thales Netherlands Huizen Netherlands
Thales Underwater Systems Stockport United Kingdom
Ultra Electronics Cheltenham United Kingdom
Ultra Electronics Greenford United Kingdom
Ultra Electronics High Wycombe United Kingdom
Ultra Electronics Wimborne United Kingdom
University of Greenwich Chatham United Kingdom
Winslow Adaptics Ltd Brecon United Kingdom