Electronics Company Index - H
- H Scientific Ltd. - Waterlooville
- H & H Services Ltd - Nottingham
- H & H Video & Television - Ellesmere Port
- H E Electronics Ltd. - Wimborne
- H F Systems - West Bromwich
- H K Wentworth Ltd. - Swadlincote
- H Preston Professional Video - Malvern
- H Roberts & Sons(Dial Indicators) Ltd. - Leicester
- H Shaw Magnets Ltd - Tonbridge
- H Tec Ltd. - Southampton
- H V R International Ltd. - Jarrow
H-Squared Electronics Ltd - Shefford- H.V. Skan Ltd - Solihull
- Habia Cable Ltd - Bristol
- Hadleigh Enterprises Ltd - Wickford
- Haes Systems (Manufacturing) Ltd. - Uxbridge
- Hager Ltd - Telford
- Hagglunds Drives Ltd - Normanton
- Halcyon Drives Ltd. - Pudsey
- Hale Instruments Ltd - Altrincham
- Hallmark Electronics Ltd - Newcastle under Lyme
- Hamamatsu Photonics U K Ltd. - Welwyn Garden City
- Hameg UK Ltd - St Neots
- Hamilton Hall Consultants Ltd - Alton
- Hamilton Litestat - Warminster
- Hamilton Rentals Ltd. - Reading
- Hamlin Electronics Europe Ltd. - Diss
- Hammond Electronics Ltd - Basingstoke
- Hanning Ltd - Burton on Trent
- Hans Tech - Chorley
- Hansatech EMS Ltd - Poole
- Hantarex International Ltd - London
- Haredata Electronics - Knaresborough
- Harland Simon plc - Bletchley
- Harland Simon UPS Ltd - Milton Keynes
- Harlequin Electronics - Rushden
- Harman Becker Automotive Systems Ltd - Bridgend
- Harman International Industries Ltd. - Potters Bar
- Harmsworth Townley and Co. Ltd. - Todmorden
- Harnessflex Ltd. - Birmingham
- Harpers A V Ltd. - Woking
- Harpscreen (Gb) Ltd. - St Helens
- Harris C J Electronic Components - Tunbridge Wells
- Harris Systems Ltd. - Wokingham
- Harrison Electrical Ltd. - Leeds
- Harrison Electronics - March
- Harrow Lighting Centre - Wembley
- Hart Instruments Ltd. - Swadlincote
- Hartest Precision Instruments - Redhill
- HARTING Integrated Solutions Ltd - Northampton
- HARTING Ltd - Northampton
- Harvard Manufacturing Ltd - Newry
- Harwin Plc - Portsmouth
- Hassett Industries Ltd - Salisbury
- Hathaway Systems Uk Group Ltd. - Belfast
- Havells Sylvania Uk Ltd. - Newhaven
- Haven Systems Ltd - Milford Haven
- Hawco Ltd - Godalming
- Hawk Electronics Ltd. - Accrington
- Hawke International - Ashton under Lyne
- Hawke Systems Ltd. - Slough
- Hawker Energy Products Ltd - Manchester
- Hawker Siddeley Switchgear Ltd - Blackwood
- Hawkeye Security and Surveillance Systems Ltd - London
- Hawkshead Designs Ltd - Porthtowan
- Hayakawa International (UK) Ltd - Wrexham
- Haze Batteries - Corby
- Haze Batteries Europe Ltd. - Romsey
- Hazledine Electronics (Telford) Ltd. - Telford
- HB Modules Ltd - Cheltenham
- HB Technologies Ltd - Newton Aycliffe
- HBL NiCad Batteries (UK) Ltd - Rugby
- HBM United Kingdom Ltd - Harrow
- HC Controls Ltd - Stockton on Tees
- HC Starck Ltd - Calne
- HCD Research Ltd - Burgess Hill
- HE Controls Ltd - Southport
- Heading Ltd - Cambridge
- Headset Co UK Ltd, The - Bristol
- Heatmiser Uk Ltd - Blackburn
- Heatrae Sadia Heating - Norwich
- Heatrod Elements Ltd. - Manchester
- Heatsense Cables Ltd - Burnley
- Heaven Dowsett and Co Ltd - Birmingham
- Heber Ltd. - Stroud
- Hech Engineering Ltd. - Bedlington
- Heidenhain (GB) Ltd - Burgess Hill
- Heinzmann UK Ltd - Darlington
- Helium Projects Ltd - Worthing
- Hellermann Tyton Ltd - Wythenshawe
- Hellermanntyton Data Ltd. - Northampton
- HellermannTyton Ltd - Aldridge
- Helvar Merca Ltd - Dartford
- Hemco Power and Control Systems Ltd - Eastleigh
- Hemplan Design Ltd - Gloucester
- Henry Cooch & Son Ltd. - Sevenoaks
- Henrys Electronics Ltd - London
- Heraeus Amba Ltd. - Banbury
- Heraeus Electro-Nite (U K) Ltd. - Chesterfield
- Heraeus Materials Ltd - Stoke on Trent
- Heraeus Noblelight Analytics Ltd. - Cambridge
- Herald Electronics Ltd. - Bath
- Hereford Rewinds Ltd. - Hereford
- Herga Electric Ltd - Bury St Edmunds
- Hertford Controls Ltd. - Ware
- Herts Meter Co Ltd - Hatfield
- Hewlett Enterprises - Liverpool
- Hewlett-Packard Ltd. - Bracknell
- Heywood Associates Ltd. - London
- HF Communications Solutions - Cambridge
- HFX Ltd - Bishops Stortford
- Hgl Dynamics Ltd - Godalming
- Hi 5 Electronics Ltd. - Warrington
- Hi-Rel Lids Ltd. - Harleston
- Hi-Tech Automation Ltd. - Kettering
- Hi-Tech Design - Waterlooville
- Hi-Tech Mouldings Ltd - Waterlooville
- Hicks (3) Ltd. - Lutterworth
- Hicks (3) Ltd. - Lutterworth
- Hiden Analytical Ltd - Warrington
- Hifi Cinema Ltd. - Reading
- High Pressure Hire Ltd - Hook
- High Voltage Systems Ltd - Northampton
- Highblade Cables - Appleby
- Highland Scientific - Bedford
- Hilger Crystals Ltd. - Margate
- Hiline Communications Ltd. - Worcester
- Hill & Sons - High Peak
- Hillcrest Engineering Instrumentation Ltd. - Leek
- Hillday Ltd. - Attleborough
- Hills Engineering Ltd. - Walsall
- Hillstone Products Ltd. - Bury
- Hilltop Products (Insulation Sleevings) Ltd. - Warrington
- Hine Engineering Ltd. - Bradford
- Hirose Electric U K Ltd. - Milton Keynes
- Hirschmann Automation & Control Ltd. - Manchester
- Hirst Magnetic Instruments Ltd. - Falmouth
- Hitachi Automotive Systems Europe Ltd. - Bolton
- Hitachi Data Systems Ltd. - Slough
- Hitachi Europe Ltd - Maidenhead
- Hitaltech UK Ltd - Poulton le Fylde
- HITEK Electronic Materials Ltd - Scunthorpe
- Hitek Ltd - Horsham
- HiTek Power Ltd - Littlehampton
- HITEK-Nology Solutions Ltd - Derby
- Hitel Communication Systems - Bootle
- Hitex (U K) Ltd. - Coventry
- Hivolt Capacitors Ltd. - Londonderry
- HNL Engineering - Stockton on Tees
- Hocken Audio Visual - London
- Hohner Automation Ltd. - Wrexham
- Hollybank Electronics Exchange - Southampton
- Holroyd Instruments Ltd. - Matlock
- Holt Broadcast Services Ltd - Reading
- HolyStone Europe Ltd - Norwich
- Homag U K Ltd. - Derby
- Homewatch Ltd - Glasgow
- Honda Connectors Ltd - Swindon
- Honeywell Aerospace Uk - Yeovil
- Honeywell Control Systems - Bracknell
- Honeywell Control Systems Ltd. - Manchester
- Honeywell Security and Custom Electronics - East Kilbride
- Hong Kong Trade Development Council - London
- Honle UV (UK) Ltd - Luton
- Horsham Business Systems Ltd. - Horsham
- Horstmann Controls Ltd. - Bristol
- Hortimax Ltd - York
- Horwich Electronic Laboratories Ltd. - Bolton
- Hosiden Besson Ltd - Hove
- Household Automation Ltd - Horsham
- Howard Eaton Lighting Ltd. - Lewes
- HPC Engineering plc - Burgess Hill
- Hs Marston Aerospace Ltd. - Wolverhampton
- Hs Sports Ltd. - Congleton
- Htc Group Ltd. - Watford
- HTZ Ltd - Croydon
Huba Control AG Branch Office UK - Swindon- Huber + Suhner (Uk) Ltd. - Bicester
- Hughes Electronics Ltd. - London
- Humber Telecommunications Ltd. - Grimsby
- Humiseal Europe Ltd. - Camberley
- Hummel Ltd - Warrington
- Huntleigh Healthcare Ltd. - Cardiff
- Husky Injection Moulding Systems UK Ltd - Leicester
- HV Wooding Ltd - Hythe
- Hvr Pentagon Ltd. - Birmingham
- Hybec Ltd - Leicester
- Hybrid Laser Technology Ltd - Ely
- Hyco Manufacturing Ltd. - Castleford
- Hycontrol Ltd. - Redditch
- Hydramotion Ltd. - Malton
- Hydro-Cable Systems Ltd. - Aberdeen
- Hydrobond Engineering Ltd. - Aberdeen
- Hydrosphere U K Ltd. - Alton
- Hylec APL - Wellingborough
- Hypercom GB Ltd - Salisbury
- Hypertac Ltd. - London
- Hypertec Ltd. - Hungerford
- Hytec Information Security Ltd. - Witney