Enviro Technology Services plc  (Stroud)
	Omega Engineering Ltd  (Irlam)
	Siemens Water Technologies (Siemens plc)  (Sevenoaks)
	Yokogawa UK Limited  (Runcorn)
	Auriema Industrial Products  (Slough)
	Foxwell Instruments  (Evesham)
	Fullbrook Systems  (Hemel Hempstead)
	GLI International (Hach Company)  (Loveland, USA)
	Green World Instruments Ltd  (Aylesford)
	Hamilton (GB)  (Carnforth)
	Hobre Instruments BV  (Purmerend, The Netherlands)
	Horiba Instruments Ltd  (Northampton)
	JUMO Instrument Company Ltd  (Harlow)
	Process Measurement & Analysis  (Wallasey)
	Russell pH  (Cupar)
	Simac Instrumentation Ltd  (Walton-on-Thames)
	Systematic UK  (Wellesbourne)