Company Index
- I S F Group Ltd. - Leicester
- IAC Plastics - Burnley
- IACS Corrosion Engineering Ltd - Keston
- Ian Flockton Developments Ltd - Grimsby
- Ibstock Building Products Ltd - Bristol
- Icenta Controls Ltd - Salisbury
- Icheme - London
- ICI Imagedata - Manningtree
- Ics Triplex Plc - Maldon
- Ideal Manufacturing Ltd - Wellingborough
- IFS Group - Industrial Foam Systems Ltd - Kings Lynn
- IHS Energy - Bracknell
- IKV Tribology Ltd - Monmouth
- IMA Ltd - Leeds
- Image Chemical Products Ltd. - Accrington
- Imerys European Performance Minerals Ltd - St Austell
- IMI Bailey Birkett - Manchester
- IMP ltd - Trowbridge
- Imperial Chemical Industries Ltd. - London
- Impress Sensors and Systems Ltd - Aldermaston
- IMS Health - Cambridge
- Imtex Controls Ltd. - Tonbridge
- In House Gas - Glasgow
- In-Situ Oilfield Services - Aberdeen
- INCON (Inspection Consultants) Ltd - Ellesmere Port
- Increased Oil Recovery Ltd. - Aberdeen
- Indestructible Paint Ltd - Birmingham
- Index Marine Equipment (1979) Ltd. - Poole
- Industrial Brushware Ltd - Halesowen
- Industrial Chemical Supplies - Plymouth
- Industrial Chemicals Ltd - Stevenston
- Industrial Cooling Systems - New Milton
- Industrial Design Ltd - Kidlington
- Industrial Flow Control Ltd - Grays
- Industrial Latex Compounds Ltd. - Heywood
- Industrial Solutions UK Ltd - Bromley
- Industrial Waxes Ltd - Tonbridge
- Ineos Chlor Limited - Runcorn
- Infield Safety UK Ltd - Cambridge
- Infield Systems Ltd - London
- Infineum Uk Ltd. - Abingdon
- Influx Measurements - Alresford
- Infoscape Solutions Ltd. - Market Harborough
- Ingen Ideas Ltd - Aberdeen
- Inidam Ltd - Romsey
- Innova Biosciences Ltd - Cambridge
- Innovata Ltd. - Nottingham
- Inpipe Products - Leyburn
- Inserve Yachts - Southampton
- Inspectorate International Ltd. - Witham
Institution of Chemical Engineers - Rugby- Instrument Product Services Ltd - Poole
- Instrumentation Exhibition c/o Trident Exhibitions Ltd - Tavistock
- Instrumentation Systems and Services Ltd - Ilkley
- Intecsea (Uk) Ltd. - Woking
- Integral - Newcastle upon Tyne
- Integrated Scientific Ltd. - Rotherham
- Intek Adhesives Ltd - Cramlington
- Intercoat Industrial Lacquers Ltd - Walsall
- Interflon (UK) Ltd - Stockton on Tees
- Interfoam Ltd. - Bedford
- International Cable Management Ltd. - Aberdeen
- International Flavours & Fragrances I F - London
- International Paint Ltd - Gateshead
- International Safety Products Ltd - Bootle
- International Scientific Supplies Ltd - Bradford
- Interspiro Ltd - Telford
- Intertec Instrumentation Ltd. - Verwood
- Intertek Caleb Brett - Merseyside - Ellesmere Port
- Intertek Holdings Ltd - Bristol
- Intertek Services - Immingham
- Invista Textiles (U.K.) Ltd - Redcar
- Inyx Pharma Ltd - Runcorn
- IOES Ltd - London
- IonBond Ltd - Consett
- IPC Systems Ltd - Worcester
- IPU Group - Oldbury
- Ironsides Lubricants Ltd (The) - Stockport
- Isca UK Ltd - Newport (Gwent)
- ISL Ivan Semenenko Ltd - Moreton in Marsh
- Isotek Electronics Ltd - Leeds
- Isothane Ltd. - Accrington
- Isothermal Technology Ltd. - Southport
- IST Molchtechnik GmbH - Pigging & Blending Technology - Deeside
- Itac Ltd - Manchester
- ITS Environmental Services Ltd - Inverurie
- Its Testing Services (Uk) Ltd. - Grays
- ITT Water and WasteWater UK Ltd - Livingston
- Ixsurvey Ltd - Edinburgh
