Chemical, Oil & Gas Company Index - A
- A C Fabrications Ltd. - Barnsley
- A W Stokes & Son (Drums) Ltd. - West Bromwich
- A and E Connock Ltd - Fordingbridge
- A C Oils Ltd - Cheadle (Cheshire)
- A D E C Marine Ltd. - Croydon
- A P Chemicals Ltd - Leek
- A T R Plant Services Ltd. - Aberdeen
- A V Pound & Co. Ltd. - Leatherhead
- A W E (Anderson Water Equipment) Ltd. - Cardiff
- A-Belco Ltd. - Ashington
- A-Mac Environmental Ltd (Dust Extraction) - Nairn
- A. & E. Plastic Fabrications Ltd - Derby
- AA Waste - Woking
AAC Eurovent Ltd - Brownhills- Aalco - Hersham
- ABB Ltd - Bristol
- ABB Ltd - London
- Abbfab Services Ltd - Bolton
- Abbirko (UK) Ltd - Southampton
- Aberdeen Drilling Consultants Ltd. - Aberdeen
- Aberdeen Skills & Enterprise Training Ltd. - Aberdeen
- Abergavenny Fuels Ltd. - Abergavenny
- Abs Consulting Ltd. - Warrington
- Abs Marine Services Ltd. - London
- ABSCO Materials - Haverhill
- Abtek Biologicals - Liverpool
- AC-CESS Co UK Ltd - Aberdeen
- Accord Petroleum - London
- Acdoco Ltd. - Bolton
- Ace Hygiene Supplies Ltd. - London
- Ace Janitorial Supplies Ltd. - Sheffield
- Ace-Tek Uk Ltd. - Sheffield
- Acergy Uk Ltd. - Aberdeen
- Acetate Products Ltd. - Derby
- Achem Ltd - Alfreton
- Acmos UK Ltd - Wirral
- Acro Precision Engineering - Great Yarmouth
- Actavis Uk Ltd. - Barnstaple
- Actikem Ltd - Stoke on Trent
- Action Can Ltd - St Helens
- Action Seals Ltd - Wallasey
- Active Load Ltd - Reading
- ACWA AIR/ACWA Services Ltd - Skipton
- Adams Home Centre Ltd. - Margate
- Adanac Valve Specialities Ltd - Bury St Edmunds
- Adc Gas Analysis Ltd. - Hoddesdon
- Addagrip Surface Treatments UK Ltd - Uckfield
- Addamark - Wellingborough
- Adhesives Direct UK Ltd - Wrexham
- Adler and Allan Ltd - Harrogate
- Admico Gratings Ltd - Weybridge
- Adr Express Ltd - Droitwich
- Advance Appliances Ltd - Walsall
- Advanced Biotechnologies Ltd. - Epsom
- Advanced Engineering Solutions Ltd - Cramlington
- Advanced Insulation Systems Ltd. - Berkeley
- Advanced Vacuum Instruments Ltd - Watford
- Advantage Chemicals Holdings Ltd. - Malvern
- Advantage Controls (Europe) Ltd - Bewdley
- AE Adams (Henfield) Ltd - Henfield
- AEL (Aberdeen) Ltd - Aberdeen
- Aeroflex Hose and Engineering Ltd - Christchurch
- Afton Chemical Ltd. - Bracknell
- AG Marvac Ltd - Manchester
- AGIS Telecom - Aberdeen
- Agma Ltd - Haltwhistle
- Agropharm Ltd - High Wycombe
- AI Materials Ltd - Sheffield
- Aiken Group - Aberdeen
- Aimer Products Ltd - Enfield
- Air Products Cryoease - Worcester
- Air Products Plc - Walton on Thames
- Air Products Plc t/a Searchwise Ltd - Ellon
- Air Products Plc t/a Seletar Services GB - Great Yarmouth
- Air Pumping Ltd - London
- Air Supply - York
- Airedale Chemical Co Ltd - Keighley
- Airprotekt Ltd. - Cambridge
- AJ Holmes Pump Co - Stockport
- Akcros Chemicals Ltd. - Manchester
- Aker Qserv Ltd. - Aberdeen
- Akzo Nobel Industrial Coatings Ltd. - Blackburn
- Al-Met Ltd - Pontyclun
- Alan Hadley Ltd - Theale
- Alan Technologies Ltd - Coleshill
- Albany Pumps - Lydney
- Albanyoak Ltd. - Llanelli
- Albion Valves - Barnsley
- Alco Valves Ltd. - Brighouse
- Alcohols Ltd. - Bishops Stortford
- Alderley plc - Wotton under Edge
- Alderley Systems Ltd - Wotton under Edge
- Aldous & Stamp Ltd - Beckenham
- Alfa Aesar - A Johnson Matthey Company - Morecambe
- Alfa Chemicals Ltd - Bracknell
- Alfa Laval - Aberdeen
- Alkane Energy Uk Ltd. - Mansfield
All Oceans Engineering Ltd - Aberdeen- All Seasons Hire Ltd - Andover
- Allards International - Dundee
- Allergy Therapeutics (Holdings) Ltd. - Worthing
- Allied Filter Products Ltd. - Manchester
- Allomax Ltd. - Aberdeen
- Alloy Flanges and Fittings Ltd - Sheffield
- Almac Clinical Services Ltd. - Craigavon
- Almetron Ltd. - Wrexham
- Alpeco Ltd - Aylesbury
- Alpha Bio Systems - Inverurie
- Alpha Decale & Nameplate Co - Westbury
- Alphasense Ltd. - Braintree
- Alphatek Hyperformance Coatings Ltd - Bury
- Altro Group PLC, The - Dorchester
- Aluline Ltd. - Runcorn
- Amarinth Ltd - Woodbridge
- Amazon Filters Ltd. - Camberley
- AMCS Ltd - Swindon
- AMEC Environment and Infrastructure UK Ltd - Newcastle upon Tyne
- Amega Sciences Plc - Daventry
- AMOSSCO ODS - London
- Anaconda Chemicals Ltd. - Tewkesbury
- Ancorite Surface Protection Ltd. - Sandbach
- Andrew Palmer & Associates Ltd. - Aberdeen
- Anglo American Oil Co. Ltd. - Wareham
- ANGLO-Krempel - Bideford
- Anglo-Nordic Burner Products Ltd. - West Molesey
- Anikem Ltd. - Sale
- Anochrome Technologies Ltd. - Wolverhampton
- Anson Ltd. - Gateshead
- Antech Ltd. - Exeter
- Anton Paar Ltd - Hertford
- Apache North Sea Ltd - Aberdeen
- APC (Scotland) Ltd - Kinross
- Apeks Marine Equipment Ltd - Blackburn
- Apex Storage Ltd - Birmingham
- Apollo Fire Detectors Ltd - Havant
- Apollo Scientific Ltd. - Stockport
- App-Chem Ltd - Wrexham
- Applegate Ltd - Barnstaple
- Applied Management (AML) Ltd - London
- Applied Measurements Ltd - Reading
- Applied Products - Swansea
- Applied Seismology Consultants Ltd. - Shrewsbury
- Appropriate Training Ltd - Preston
- APT Chemicals - Stourport on Severn
- Aqua Cooling Solutions Ltd. - Fareham
- Aqua Energy (International) Ltd. - Paisley
- AquaTec Coatings Ltd - Wrexham
- Aquaterra Energy Ltd. - Norwich
- AquaTerra Solutions - Aberdeen
- Aquilar Ltd - Horsham
- Arc Machines (UK) Ltd - Daventry
- Archimica Ltd. - Deeside
- Arctic Products Ltd. - Corby
- Argo Flare Services Ltd - Marlow
- Argosy Control Engineering Ltd. - Aberdeen
- Arizona Chemical Ltd - Chester le Street
- Armack Chemicals Ltd - Stourbridge
- Armillatox Ltd. - Alfreton
- Aromatherapy Products Ltd. - Hove
- Arpadis Uk Ltd. - Chester
- Arundelle Industrial Services Ltd - Wallingford
- Asams Ltd - Great Yarmouth
- Asbestos Group, The - Bromsgrove
- Ascent Scientific - Weston super Mare
- Asco Numatics - Skelmersdale
- Ascot International (Manchester) Ltd. - Stockport
- Aseptika Ltd - Huntingdon
- Ashland Chemicals & Hygiene Supplies Ltd. - Limavady
- ASK Piearcey Ltd - Sheffield
- Asme Welding Services - Wigan
- Asphalt Associates Ltd. - Redhill
- Associated Dental Products Ltd. - Swindon
- Aston Fittings and Flanges Manufacturing Ltd - Birmingham
- Astrazeneca Plc - London
- Atex Equipment Ltd - Farnborough
- Atlas Tube Bending Ltd - Oldham
- ATP Oil and Gas (UK) Ltd - Guildford
- Attock Oil Co Ltd - London
- Aubin Ltd. - Ellon
- Aucott and Wainwright - Coalville
- Augean Treatment - Hinckley
- Aughton Hire - Liverpool
- Augustus Oils Ltd - Alton
- Aura-Soma Products Ltd. - Horncastle
- Aurelian Oil & Gas Plc - London
- Autoglym Ltd - Letchworth
- AV Formulas Ltd - Stafford
- Avalon Sciences Ltd. - Somerton
- Aveva Group Plc - Cambridge
- Avonchem Ltd. - Manchester
- AVT Ltd - Stroud
- Axeum Oil Technology - Malton
- Axiom Engineering Associates Ltd - Stockton on Tees
- Axiom Process Ltd. - Aberdeen
- Ayles Fernie International Ltd. - Sevenoaks