Chemical, Oil & Gas Company Index - U
- U K Process Valves Ltd. - Swindon
- U K Waste Management - Glasgow
- U Q G Ltd. - Cambridge
- Ubichem Plc - Eastleigh
- Ufc Ltd. - Manchester
- UK Coal Mining - Morpeth
- UK Coal Mining Ltd - Chesterfield
- UK Coal Mining Ltd - Coventry
- UK Coal Mining Ltd - Knottingley
- UK Coal Mining Ltd - Melton Mowbray
- UK Coal Mining Ltd - Morpeth
- UK Coal Mining Ltd - Selby
- UK Coal Mining Ltd - York
- Uk Coal Plc - Doncaster
- UK Instruments and Controls Ltd - Stockton on Tees
- Ulster Industrial Explosives Ltd. - Carrickfergus
- Ultraseal Surfacetech - Coventry
- Ultrasonic Cleaning Services (UK) Ltd - Leeds
- Ultravalve Ltd - Halesowen
- Ultrawave Ltd - Cardiff
- Umicore UK Ltd - Hertford
- Umoe Schat-Harding Ltd. - Gosport
- Unicorn Mucksucker - Bedford
- Unilam International Ltd. - Leeds
- Union Supplies (Aberdeen) Ltd. - Aberdeen
- Unipower (UK) Ltd - St Leonards on Sea
- United Corporation Ltd. - Wallington
- United Phosphorus Ltd. - Warrington
- Univar Ltd - Bradford
- Univar Middlesbrough - Middlesbrough
- Univar Wellingborough - Wellingborough
- Universal Applied Coatings Ltd. - Crawley
- Universal Biologicals (Cambridge) Ltd - Cambridge
- Universal Pegasus International Inc - Aberdeen
- Universal Sealants (U K ) Ltd. - Washington
- Uop Ltd. - Guildford
- Upton Oil Co Ltd - Poole