IT for Industry Company Index - H
- H Kuhnke Ltd. - Andover
- H & R Fabrications & Finishers Ltd. - Waterlooville
- H C S - Shrewsbury
- H F Systems - West Bromwich
- H W Dansie Ltd. - Chesterfield
- Hadleigh Paper Converters - Wickford
- Halpen Marketing Management Ltd. - London
- Hamilton Hall Consultants Ltd - Alton
- Hamilton Rentals Ltd. - Reading
- Hammond Recruitment Group - Fareham
- Hamsoft Communications - Limerick
- Hanwell Instruments Ltd - Letchworth
- Hardware Associates Ltd. - Petworth
- HardwarePT - Stockport
- Hargood Engineers Ltd - Southport
- Harland Simon plc - Bletchley
- Harlequin Software Ltd. - Marlborough
- Harltex Ltd. - Northampton
- Harmonic Software Systems Ltd - Crawley
- Harriman Green and Associates - Stockport
- Harrod of Redbridge - Ilford
- Harry Major Machine-UK Ltd - Sandy
- Harthill House Group Ltd - Sheffield
- Haughton Design Ltd - Stafford
- Haven Systems Ltd - Milford Haven
- Haverly Systems Europe Ltd - St Albans
- HB Modules Ltd - Cheltenham
- HBS Consultants Ltd - Oakham
- Heads Recruitment Ltd. - Manchester
- Headtex Ltd - Chesterfield
- Health Intelligence Ltd. - Sandbach
- Heehaw Ltd. - Edinburgh
- Helbar Automation Ltd - Hockley
- Hellermanntyton Data Ltd. - Northampton
- Helmdart Ltd. - Woking
- Help/Systems International Ltd. - Fleet
- Henkel Ltd (Loctite) - Hemel Hempstead
- Hewlett Packard - Reading
- Hex Design - Cardiff
- Hexagon (Software) Group Ltd. - Chipping Norton
- Hexel Developments Ltd. - Warrington
- Hi-Grade Computers Plc - Barking
- Hi-Tec Bradford Ltd. - Bradford
- Hierographics Ltd - Wareham
- High Lea (Presteigne) Ltd. - Presteigne
- High Performance Resourcing Ltd - Nottingham
- Highams Recruitment Ltd. - Caterham
- Highland Business Networks Ltd - Dingwall
- Highlander IT and Telecoms Solutions Ltd - Sheffield
- Hillbrow (U K) Ltd. - Horley
- Hills Components Ltd - Watford
- Hillside Software - Glasgow
- Hirschmann Automation & Control Ltd. - Manchester
- Hitaltech UK Ltd - Poulton le Fylde
- Hitchin PC Co - Hitchin
- Hofbauer (UK) Ltd - Gloucester
- Hoffmann and Krippner UK - Cambridge
- Holistic Technologies Ltd - Doncaster
- Hollinbay Consultancy Services Ltd. - Leeds
- Hollowrap Ltd. - Leicester
- Honeywell Control Systems Ltd. - Manchester
- Honeywell Scanning and Mobility - Warrington
- Horiba Instruments Ltd - Northampton
- Horkesley Electronics Ltd - Colchester
- Horsebridge Network Systems Ltd - Cheltenham
- Horsham Business Systems Ltd. - Horsham
- Hostcomm - Ottery St Mary
- House-on-the-Hill Software Ltd. - Stockport
- HOW2EVOLVE Ltd. - Liverpool
- Howard Jackson Associates - Sale
- Howard Jackson Associates - Midlands - Birmingham
- Hpd Software Ltd. - London
- Hr Go (Bishop's Stortford) Ltd. - Bishops Stortford
- Hudson Hill Consulting Ltd - Newton le Willows
- Hugh Symons Information Management Ltd. - Poole
- Hughes Software Ltd. - Sale
- Human Recognition Systems Ltd. - Liverpool
- Human Resources Consultancy - Bristol
- Human-Computer Interface Ltd. - Cambridge
- Hunter Systems Ltd - Nottingham
- Huntleigh Healthcare Ltd. - Cardiff
- Hursley EMC Services - Chandlers Ford
- Huxley Associates - Reading
- Hydro Sub Consultants Ltd. - Lowestoft
- Hydro-Cable Systems Ltd. - Aberdeen
- Hytec Information Security Ltd. - Witney