Company Index
- Oakmoor - London
- Oakmount Control Systems Ltd. - Plymouth
- Oakwade Ltd - Hartlepool
- Oasis Electronics Ltd - Milton Keynes
- Oasis Ltd - Slough
- Obd Systems Ltd. - Trowbridge
- Obducat Camscan Ltd. - Cambridge
- Observant Electronics Ltd - Melksham
- Ocean Grove Developments Ltd - Reading
- Ocean Systems Ltd - Fleet
- OCS Group UK Ltd - Manchester
- Octaveward Ltd - Darwen
- Octec Ltd - Bracknell
- ODU (UK) Ltd - Loughborough
- OEM Lubricants Ltd - Otley
- Oerlikon Leybold Vacuum UK Ltd - Chessington
- Offshore Electronics Ltd - Guernsey
- Offshore Product Services Ltd - Lincoln
- Og Sport Ltd. - Banbury
- Ogier Electronics Ltd - St Albans
- Ohgon Electronics - Canvey Island
- Ohm Uk Ltd - Knutsford
- Ohmega Ltd. - New Milton
- OK International Ltd - Chandlers Ford
- Oki (U K) Ltd. - Glasgow
- Oki Europe Ltd. - Hounslow
- Oki Systems (Uk) Ltd. - Slough
- OKW Enclosures Ltd - Fareham
- Oldham Lighting Ltd. - Leatherhead
Ole Wolff Electronics Ltd - Bedford- Olmec Advanced Materials Ltd. - Sheffield
- Olson Electronics Ltd - Stanmore
- Olympus Automation Ltd. - Peterborough
- Olympus Uk Ltd. - London
- Omar Skinner & Sons - Bracknell
Omeg Ltd - East Grinstead- Omega Calibration Laboratories Ltd. - Chesterfield
- Omega Engineering Ltd - Manchester
- Omega Research Ltd - Ely
- Omega Resistance Wire - Potters Bar
- Omi TV Services - Stevenage
- Omicron Electronics UK Ltd - Stafford
- Omicron Ltd. - Ilford
- Omiran Ltd. - Bury St Edmunds
- Omitec Instrumentation Ltd - Devizes
- Omni Flow Computers Ltd - Bracknell
- Omni Sensors and Transmitters Ltd - Rugby
- Omnia H V & Rail Ltd. - Uttoxeter
- Omnifit Ltd - Cambridge
- Omniflex (U K) Ltd. - Stockport
- Omnitest Ltd. - Wimborne
- Omron Electronics Ltd - Milton Keynes
- On Board Surface Mount Assembly Ltd - Darwen
- On Time Communications Ltd - High Wycombe
- Onboard Electronics Ltd - Aldermaston
- Onclick Ltd. - Tonbridge
- One North East Development Board - Newcastle upon Tyne
- One Way Circuits Ltd - Norwich
- Onspec Oscillators Ltd. - Nuneaton
- Onyx Holdings Ltd. - South Petherton
- OP-TEC Systems Ltd - Telford
- Opal Group Ltd - Sevenoaks
- Opas I T Ltd. - London
- Open Networks Engineering Ltd. - Bishops Stortford
- Openhouse Europe Ltd - Newcastle under Lyme
- Opsol UK Ltd - Cramlington
- Optex (Europe) Ltd. - Maidenhead
- Optic Lighting Ltd - Nelson
- Optical Filters Ltd. - Thame
- Optical Technology Training Ltd - Skipton
- Optical Test & Calibration Ltd. - Bradford
- Opticon Ltd. - Luton
- Opticus - Glasgow
- Optikinetics Ltd. - Luton
- Optilan UK ltd - Coventry
- Optima Research Ltd - Stansted
- Optime Lighting Ltd. - Hitchin
- Optimim - Llandysul
- Option Technologies Europe Ltd. - Rossendale
- Optisense Ltd. - Horsham
- Optivision (Yorkshire) Ltd. - Ossett
- Optocap Ltd. - Livingston
- Optoelectronic Manufacturing Corporation (UK) Ltd - Redruth
- Optoma Europe Ltd. - Watford
- Optosci Ltd. - Glasgow
- Optosource - Ulverston
- ORA Lighting - London
- Oracle Components Ltd - Harlow
- Oracle Vision Ltd - Wakefield
- Orange Instruments Ltd. - Northampton
- Orbik Electronics Ltd. - Walsall
- Orbit Research Ltd - Bradford
- Orbital Epos Systems Ltd - Warminster
- Orchard Electronics - Hailsham
- Orchard Process Controls - Brixham
- Oriel Systems Ltd - Chippenham
- Origin Precision Mouldings Ltd. - Glasgow
- Orion Devices Ltd. - Norwich
- Orion Electric (U K) Ltd. - Port Talbot
- Orion Media Marketing Ltd - Brentford
- Orion Projects Ltd. - Saltash
- Orion Storage Solutions Ltd - Abertillery
- Orion Systems Ltd - Ashby de la Zouch
- Orlight Ltd - Potters Bar
- Ormiston Wire Ltd - Isleworth
- Orscheln Europe - Rugby
- Osborne and Collins - Walton on Thames
- Osborne Precision Sheet Metal Ltd - Hungerford
- Osco Ltd - Bletchley
- OSEC 2000 Ltd - Ipswich
- Oshino Lamps (U K) Ltd. - Nottingham
- Osmor Products Ltd - Hassocks
- Ossett Industrial Projects Ltd. - Ossett
- Oticon Ltd. - Hamilton
- Otodynamics Ltd. - Hatfield
- Otter Controls Ltd. - Buxton
- Outram Research Ltd - Chichester
- Outsource Electronics Ltd. - Havant
- Oval Automation Ltd. - Bognor Regis
- Ovation Systems Ltd - Thame
- Overcare Ltd. - Bournemouth
- Overseas Medical Supplies (U K) Ltd. - London
- Oxford Applied Research Ltd. - Witney
- Oxford Diesels Ltd - Abingdon
- Oxford Electronics - Oxford
- Oxford Electronics Ltd. - Alton
- Oxford Instruments Analytical Ltd. - High Wycombe
- Oxford Instruments Plasma Technology Ltd. - Bristol
- Oxford Instruments Superconductivity - Abingdon
- Oxford Lasers Ltd - Didcot
- Oxford Semiconductor Ltd. - Abingdon
- Oxley Developments Company Ltd - Ulverston
- Oxton Alarm and CCTV Supplies - Wallasey
- Oxygen Electronics - Marlborough
- Oyster Terminals Uk Ltd. - Coventry
