Siemens Water Technologies (Siemens plc)  (Sevenoaks)
	Spiroflow Ltd  (Clitheroe, UK)
	Sahut Conreur SA  (Raismes, France)
	Salter Cyclones Ltd (Mozley products)  (Cheltenham)
	Sampling Systems Ltd  (Coleshill)
	Sandvik Coromant  (Halesowen)
	Sapplicator Ltd (formerly Acrison International)  (Trafford Park)
	Sartec Group  (Tenterden)
	Sartorius Limited  (Epsom)
	Scensys Scientific & Engineering Systems Ltd  (Aylesbury)
	Schenck Ltd  (Warwick)
	Schleicher & Co. International (Intimus & Dixi) Lt  (Crawley)
	Servomex Group Ltd  (Crowborough)
	SEW Eurodrive Ltd  (Yorkshire)
	SHS Group
	Silcoms Ltd  (Bolton)
	Simar Ltd  (Brierley)
	Soabar  (Whetstone)
	Solartron Analytical  (Farnborough)
	Solex Thermal Science Inc.  (Calgary, Canada)
	Solids Handling & Processing Association Ltd.  (Woking)
	Solids Handling and Processing Association (SHAPA)  (Oadby)
	Solitec Engineering Ltd(formerly Solitec Handling)  (Blaenavon)
	Southco Europe Ltd   (Warndon)
	Spectro Analytical U.K. Ltd  (Halesowen)
	Spectronic Unicam   (Cambridge)
	Standard Industry Ltd  (Studley)
	Standprime Ltd  (Chelmsford)
	Star Packing Systems Ltd  (Middlewich)
	STB Engineering Ltd
	Steelfields Limited  (Gillingham)
	Stewart Gill Conveyors (a division of Air-Log Ltd)  (Aldershot)
	Strapex  (Walsall)
	Structure-Flex Ltd  (Holt, England)
	Sturge Industries Ltd  (Dudley)
	Sudmo (UK) Ltd  (Droitwich)
	Sui Generis International Ltd  (Colchester)
	Sweco Europe UK Division  (Stoke-On-Trent)
	SWG Process Engineering Ltd  (Stoke-On-Trent)
	Synatel Instrumentation Ltd  (Cannock)
	Synthetic Packaging Ltd