Sensortronic Ltd  (Henley-on-Thames)
	SKF (UK) Ltd  (Luton)
	S.T.S. (Coventry) Ltd  (West Midlands)
	Saftek
	Saftronics Ltd
	SAI (GB) Ltd  (Basildon)
	Sandhurst Technology Ltd  (Surrey)
	Sandvik Coromant  (Halesowen)
	Sarel  (Wiltshire)
	Schaeffler (UK) Ltd - INA FAG  (Sutton Coldfield)
	Schaffner EMC Ltd  (Berkshire)
	Schneider Electric Ltd  (Coventry)
	Schneider Electric Ltd  (Telford)
	Schroff (UK) Ltd  (Hemel Hempstead)
	Scorpio Control Systems Ltd  (Somerset)
	Scotlec Service Ltd  (Cheshire)
	Scotronic
	Sedis Co Ltd
	SEM
	SEM Ltd
	Sencon (UK) Ltd
	Sensing Devices Ltd  (Merseyside)
	Sensor Technology Ltd  (Banbury, UK)
	Sensorbility Ltd (formerly Sensor Consultants Ltd   (Salcombe)
	Servo Components & Systems Ltd  (Dorset)
	SEW Eurodrive Ltd  (Yorkshire)
	Sicme Motori
	Sieb & Meyer Elektronik Ltd  (Hampshire)
	Siemens Industry Automation & Drive Technologies  (Manchester)
	Siemens plc  (Camberley)
	SIG Pack Systems AG
	SIGMATEK GmbH & Co KG (Sigmatek PLCs)  (Lamprechtshausen, Austria)
	Siko Ltd  (Bedfordshire)
	Silverteam Limited (Hitachi Drives & Automation)  (Great Yarmouth)
	Siti-Power
	SKF Engineering Products Ltd  (Luton)
	Slater Drive Systems  (Northumberland)
	SmartDrive Ltd  (Cambridgeshire)
	Smartscan Inc.  (Corby)
	SMB Bearings Ltd  (Brize Norton)
	SoftStart UK Ltd  (Great Yarmouth)
	South Eastern Hydraulics Ltd  (Surrey)
	Special Belt Transmissions Ltd
	Spectral Drives & Controls Ltd  (Suffolk)
	Spencer Gears Ltd
	SPM Instrument UK Ltd  (Lancashire)
	Sprecher & Schuh   (Houston, USA)
	Sprint Electric Ltd  (Arundel, UK)
	Sprint Engineering Services Ltd  (Kent)
	SS White Technologies UK Ltd  (Milton Keynes)