BSL Gas Technologies Limited  (Rochester)
	Enviro Technology Services plc  (Stroud)
	IMA International Moisture Analysers Ltd  (Guiseley)
	Insteng Process Automation Ltd   (Cardiff)
	Tempcon Instrumentation Ltd  (Ford, Nr. Arundel, U.K.)
	Yokogawa UK Limited  (Runcorn)
	Able Instruments & Controls Ltd  (Reading)
	Allison Engineering  (Basildon)
	AMETEK Drexelbrook   (Horsham, USA)
	Analect Instruments Inc  (Rushden)
	Auriema Industrial Products  (Slough)
	Brunswick Instrumentation Ltd  (Hove)
	GOW-MAC Instrument Co. Ltd  (Shannon, Ireland)
	Hitech Instruments Ltd  (Luton)
	Hobre Instruments BV  (Purmerend, The Netherlands)
	Maihak Aktiengesellschaft
	MKS Instruments UK  (Altrincham)
	Orthodyne SA  (Alleur, Belgium)
	PCME Ltd  (St Ives)
	PerkinElmer Instruments  (Seer Green)
	Procal Analytics Ltd  (Peterborough)
	PS Analytical Ltd  (Orpington)
	Serto Uk  (Brierley Hill)
	Servomex Group Ltd  (Crowborough)
	Signal Group  (Hoddesdon)
	Signal Instrument Co ltd  (Camberley)
	Solartron Analytical  (Farnborough)
	Systech Instruments  (Thame)
	Teledyne Brown Engineering  (Southall)
	Testo Ltd  (Alton, UK)
	UOP  (Guildford)