Chemical, Oil & Gas Company Index - G
- G C Hahn & Co. Ltd. - Mold
- G & A Plastics Holdings Ltd. - Accrington
- G B Caleva Ltd. - Sturminster Newton
- G B Lubricants Ltd. - Gateshead
- G K Systems Ltd. - Antrim
- G M Engineering Ltd. - Aberdeen
- G P Services (U K ) Ltd. - Doncaster
- G R Lane Health Products Ltd. - Gloucester
- G&P Batteries Ltd - Wednesbury
- Gaffney Cline & Associates Ltd. - Alton
- Gainland (International) Ltd. - Deeside
- Galgo (U K ) Ltd. - Hemel Hempstead
- Gall Thomson Environmental Ltd - Great Yarmouth
- Gallows Green Services Ltd - Thirsk
- Gardline Marine Sciences Ltd - Great Yarmouth
- Gas Compressors Ltd - Tonbridge
- Gas Data Ltd. - Coventry
- Gaskin-Read U M S Ltd - Norwich
- Gaspack Services Ltd - Pontypridd
- GBA Engineering and Construction Ltd - Slough
- GBH Technical Ltd - Aberdeen
- GCE Group - Warrington
- GDS Technologies Ltd - Leeds
- Gea Pharma Systems Ltd. - Eastleigh
- Gee and Co - Birmingham
- Geejay Chemicals Ltd - Sandy
- Gelpke & Bate Ltd. - Redhill
- Gemchem Ltd. - Bristol
- Gemini Dispersions Ltd. - Rossendale
- General Environmental Services Ltd - Aylesbury
- General Monitors Ireland Ltd - Macclesfield
- Genetix Ltd. - New Milton
- Geo Therm Ltd - Thermal Imaging Services - Lowestoft
- George J Goff Ltd. - Norwich
- George Whimpy (West Scotland) Ltd - Paisley
- Geoscience Ltd. - Falmouth
- Geotech - Leamington Spa
- Gestra (UK) Ltd - Newbury
- Getech - Leeds
- GK Enviro Ltd - Barnsley
- Glaxosmithkline Research & Development Ltd (Uxbridge) - Uxbridge
- Global Heat Transfer - Stafford
- Global Maritime Scotland Ltd. - Aberdeen
- Global Pacific and Partners - London
- Globe Heat Treatment Services Ltd. - Liverpool
- Gloucester Heat Treatment Specialists Ltd. - Gloucester
- Glynwed Pipe Systems Ltd - Huntingdon
- GMC Corsehill Ltd - Irvine
- GMI - Gas Measurement Instruments Ltd - Renfrew
- Go 4 Oil Gas and Energy Jobs - Leatherhead
- Go Plant Ltd. - Coalville
- Gold Consult Ltd. - Faversham
- Goldcrest Chemicals Ltd - Barnsley
- Goldschmidt U K Ltd - Maryport
- Gordon Harrison Ltd. - Wakefield
- Gower Chemicals - Rotherham
- Gower Chemicals Ltd. - Swansea
- Grace Construction Products Ltd - Slough
- Grace Davison Discovery Sciences - Carnforth
- Graham Hart (Process Technology) Ltd - Bradford
- Grampian Powerclean Equipment - Peterhead
- Granwax Products Ltd. - Alfreton
- Gray Forklift Services Ltd. - Aberdeen
- Grayloc Products Ltd. - Aberdeen
- Greatfield Engineering Services - London
- Grimley Smith Associates Ltd - Brigg
- Grosvenor Chemicals Ltd. - Huddersfield
- Grosvenor Pumps Ltd - Camborne
- Grotech Production Ltd. - Goole
- Guardian Barrier Lubricants - Wolverhampton
- Guyson International Ltd - Leeds
- Gws Engineers Ltd. - Scunthorpe
- Gxp Ltd. - Nottingham