Company Index - I
- I S F Group Ltd. - Leicester
- IAC Plastics - Burnley
- IACS Corrosion Engineering Ltd - Keston
- Ibstock Building Products Ltd - Bristol
- icenta Controls Ltd - Salisbury
- Icheme - London
- Ics Triplex Plc - Maldon
- Ideal Manufacturing Ltd. - Wellingborough
- IDEX Pump Technologies (Ireland) Ltd - Shannon
- IFS Group - Industrial Foam Systems Ltd - Kings Lynn
- IMA Ltd - Leeds
- Image Chemical Products Ltd. - Accrington
- Imerys Performance Minerals Ltd - St Austell
- IMI Bailey Birkett - Manchester
- Imperial Chemical Industries Ltd. - Manningtree
- Impress Sensors and Systems Ltd - Aldermaston
- IMS Health - Cambridge
- Imtex Controls Ltd. - Tonbridge
- In House Gas - Glasgow
- INCON (Inspection Consultants) Ltd - Ellesmere Port
- Increased Oil Recovery Ltd. - Aberdeen
- Indestructible Paint Ltd. - Birmingham
Industrial Brushware Ltd - Halesowen- Industrial Chemical Supplies - Plymouth
- Industrial Chemicals Ltd - Stevenston
- Industrial Design Ltd - Kidlington
Industrial Flow Control Ltd - Grays- Industrial Latex Compounds Ltd. - Heywood
- Industrial Solutions Uk Ltd. - London
- Industrial Waxes Ltd. - Tonbridge
- Ineos Chlor Ltd - Runcorn
- Infield Safety Uk Ltd. - Cambridge
- Infield Systems Ltd - London
- Infineum Uk Ltd. - Abingdon
- Influx Measurements - Alresford
- Ingen-Ideas Ltd. - Aberdeen
- Inidam Ltd - Romsey
- Innova Biosciences Ltd - Cambridge
- Innovata Ltd. - Nottingham
- iNPIPE Products - Catterick Garrison
- Inserve Yachts - Southampton
- Insit Moulded Packaging Ltd. - Trowbridge
- Inspectorate International Ltd. - Witham
- Institution of Chemical Engineers - Rugby
- Instrument Product Services Ltd - Poole
- Intecsea (Uk) Ltd. - Woking
- Integral - Newcastle upon Tyne
- Integrated Scientific Ltd. - Rotherham
- Integrity Alloys Ltd - Sheffield
- Intelliscan Ltd - Fraserburgh
- Interceptor Waste Services (IWS) - County Durham
- 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. - Manchester
- IOES Ltd - London
- Ionbond Ltd - Consett
- IPC Systems Ltd - Worcester
- IPU Group - Oldbury
- Isca UK Ltd - Newport (Gwent)
- ISL Ivan Semenenko Ltd - Moreton in Marsh
- Isothane Ltd. - Accrington
- Isothermal Technology Ltd. - Southport
IST Molchtechnik GmbH - Pigging & Blending Technology - Deeside
- IT Planning - Banstead
- Itac Ltd. - Manchester
- Its Testing Services (Uk) Ltd. - Grays
- Ixsurvey Ltd. - Edinburgh
