Company Index
- O A Curtis & Sons - Newmarket
- O A S Ltd - Chesterfield
- O B W Engineering Services Ltd - Liverpool
- O C D Engineering - Belfast
- O C Jewellery Manufacturers and Design - Chester
- O E S Medical Ltd - Abingdon
- O I L Engineering Ltd - Aberdeen
- O L D Engineering Company Ltd - Hinckley
- O R S Bearings Ltd - Manchester
- O S Engineering - Liverpool
- O&S Engineering - Launceston
- O'Connell Kevin - Stockport
- O'connor Sutton Cronin - London
- O'Dell Signs - Hayle
- O'Grady Michael J - Rotherham
- O'hagan Caravan Transport and Sales - Newton Stewart
- O'Hanion Engineering - Dungannon
- O'Hara R - Southport
- O'Hara T A - Ammanford
- O'Leary James - Barking
- O'Leary Kevin Arthur - Cheltenham
- O'Neill and Co Ltd - Glasgow
- O'Neill Medicalia Ltd - Liverpool
- O'Neill WD Transport Ltd - Newry
- O'rouke's Joinery and Glazing Contractors - Hornchurch
- O-Vee Spring Gauges Ltd - Watford
- O.L.E. (Uk) Ltd - Chichester
- O.R.C.A. (Alton) Ltd - Bordon
- O.S.F. Ltd - Wolverhampton
- O.T.M.Servo Mechanism Ltd - Egham
- O1 Advanced Mechanical Services - Maldon
- Oadby Plastics Ltd - Leicester
- Oadby Plastics Ltd - Warrington
- Oak Engineering - Rhyl
- Oak Engineering Co. Ltd - Hebburn
- Oak Leaf Joinery - Peterborough
- Oak Lodge Designs - Alfreton
- Oak Refrigeration and Mechanical Services Ltd - Leicester
- Oak Street Fabrication - Norwich
- Oak Tables - Winchester
- Oak Tree Cabinet Makers - Swindon
- Oakay Joinery - Llandudno
- Oakdale Contractors Ltd - Bradford
- Oakdale Project Management Services Ltd - Doncaster
- Oakdene Joinery - Dartford
- Oakenhurst Aircraft Services Ltd - Rayleigh
- Oakes Bros Ltd - Horsham
- Oakes E P & Son - Smethwick
- Oakfield Woodcraft - Bristol
- Oakham Business Systems Ltd - Preston
- Oakham Engineering - Corby
- Oakham Sheet Metal Co Ltd - West Bromwich
- Oakhirst Metals - Aylesbury
- Oakhouse Electronics Ltd - Eye
- Oakland Conservatories - Manchester
- Oakleigh Cases Ltd - Potters Bar
- Oakley Products Ltd - Corby
- Oakmace Exhibitions Ltd - Waltham Abbey
- Oakrange Engineering Ltd - Rotherham
- Oakridge Steel Ltd - Blackwood
- Oakwood Fencing Services Ltd - Witham
- Oakwood Fuels Ltd - Newark
- Oakwood Joinery - Hitchin
- Oasis Bathroom Centre - Bath
- Oasis Metal Products Ltd - Monmouth
- Oaston Engineering Ltd - Nuneaton
- Oasys Technologies Ltd - Letchworth
- Obd Systems Ltd - Trowbridge
- Obek (U.K.) Ltd - Wellingborough
- Obelisk Engineering - Wellingborough
- Oberon Engineering Ltd - Havant
- Obscura Access - Braintree
- OCCO Coolers Telford Ltd - Telford
- Ocean Bathroom Products Ltd - Hatfield
- Ocean Kinetics Ltd - Shetland
- Oceaneering International Services Ltd - Aberdeen
- Ocme UK Ltd - Newbury
- OCS Group UK Ltd - Manchester
- Octo Product Development Ltd - Gateshead
- Octopus Collation Solutions Ltd - Derby
- Odescan Ltd - Chelmsford
- Odin Consulting Engineers Ltd - Glasgow
- Odin Engineering Ltd - Coventry
- Odlings MCR Ltd - Ellesmere Port
- Odour Services Ltd - Stafford
- Odran Helay - Corsham
- Odyssey Blinds - Westcliff on Sea
- Odyssey Technologies Ltd - Farnham
OEM Automatic Ltd - Leicester- OEM Lubricants Ltd - Otley
- Oerlikon Balzers - Milton Keynes
- Oetiker UK Ltd - Horsham
- Off Road Ltd - Belfast
- Off Roaders - Neath
- Off Zero Ltd - Cullompton
- Offaplan Ltd - Daventry
- Offerframe Ltd - Leicester
- Offerlaunch Ltd - Liverpool
- Office Aids Displays - Enfield
- Office Options (Midlands) Ltd - Wolverhampton
- Office Water Coolers Ltd - Rugeley
- Offset Services Ltd - Warrington
- Offshore Stainless Supplies - Walsall
- Ogden (Transteel) Ltd - Pudsey
- Ogden Fibres Ltd - Keighley
- Ogilby Construction Ltd - Chesterfield
- Ogle G C & Sons Ltd - Ripley
- Ogp Uk Ltd - Derby
- OHM Security Ltd - Leeds
- Ohmicron Ltd - Poole
- Oil & Gas Systems Ltd - Ely
- Oil and Gas Boiler Services - Widnes
- Oil Salvage Ltd - Bootle
- Oil Services Ltd - Okehampton
- Oil States Industries UK Ltd - Aberdeen
- Oil States Klaper Ltd - Aberdeen
- Oilfast Scotland Ltd - Bellshill
- Oilite Bearings Ltd - Ipswich
- Oim International Ltd - Beccles
- OK International (Europe) Ltd - Bury St Edmunds
- OK Services - Sutton in Ashfield
- Oka Direct Ltd - London
- Okane Window Services - Magherafelt
- Okay Engineering Services Ltd - Market Harborough
- OKW Enclosures Ltd - Fareham
- Old Bexley Pine - Bexley
- Old Chapel Machining Centre - Swindon
- Old Devon Pine - Honiton
- Old Ford Catering Equipment Centre - London
- Old Forge Pine - Stalybridge
- Old Forge Pine Furniture - Lewes
- Old Manse Joinery - Coleraine
- Old Oak Engineering - Blaenavon
- Old Park Engineering Services Ltd - Cradley Heath
- Old Pine and Design - Ringwood
- Old Pine Workshop - Norwich
- Old Toll House - Worcester
- Old Town Engineering Co Ltd - Swindon
- Oldbury Engineering Co Ltd - Horley
- Oldbury UK Ltd - Wolverhampton
- Olde Potting Shed Co - Rowlands Gill
- Oldham - Manchester
- Oldham Blinds - Oldham
- Oldham Electroplating Co Ltd - Oldham
- Oldham Engineering Ltd - Oldham
- Oldham One Stop - Oldham
- Oldham Optical UK - Scarborough
- Oldham Power Tools Centre - Oldham
- Oldland Cnc. Ltd - Bristol
- Oldroyd Lee - Eastbourne
- Olenol Ltd - Congleton
- Oleo International Ltd - Coventry
- Olicana Products Ltd - Ilkley
- Olivari Uk Ltd - Brentwood
- Olive and Padgett Ltd - Heckmondwike
- Oliver and Macleod - Inverurie
- Oliver Anthony W - Chesterfield
- Oliver Douglas Ltd - Leeds
- Oliver Goldsmith Eyewear Ltd - Borehamwood
- Oliver Signs - Dorchester
- Oliver's Army Ltd - Worcester
- Olivers Blinds - Rochdale
- Ollyswood Joinery - Pulborough
- Olney Pine and Picture Gallery - Milton Keynes
- Olney Pine Picture Gallery - Olney
- Olney Precision Ltd - Olney
- Olton Transmissions - Birmingham
- Olver and Rawden Consulting Forensic Engineers - Coventry
- Olympia Testing (Holdings) Ltd - Brierley Hill
- Olympia Triumph Manufacturing Ltd - Swanage
- Olympic Conveyor Services Ltd - St Austell
- Olympic Pine - Wakefield
- Olympic Welding Ltd - Norwich
- Olympus Technologies Ltd - Huddersfield
- Olympus Transmissions Ltd - Wolverhampton
- Omagh Minerals Ltd - Omagh
- Omar Homes Ltd - Brandon
- Omar S Chana - Southall
- Omc Joinery Ltd - Ilkeston
- Omega Blacksmiths - Glasgow
- Omega Building Services Ltd - Caterham
- Omega Citylifts Ltd - Welwyn Garden City
- Omega Controls - Newark
- Omega Diagnostics Ltd - Alloa
- Omega Doors Ltd - Preston
- Omega Foundry Machinery Ltd - Peterborough
- Omega Handling - Colchester
- Omega Handling Supplies - Ipswich
- Omega House Furniture - Thirsk
- Omega Lift Services Ltd - Edinburgh
- Omega Pistons Ltd - Halesowen
- Omega Signs Ltd - Leeds
- Omega Technical Research Ltd - Aberdeen
- Omega Technical Services - Wrexham
- Omega Windows - Middlesbrough
- Omega Wire Ltd - Potters Bar
- Omega Wolf Ltd - Nottingham
- Omegaslate (UK) Ltd - Kidderminster
- Omex Medical Ltd - Littlehampton
- Omicron Cutting Technology Ltd - Bristol
- OML Ltd - Ashton under Lyne
- Omni Design International Ltd - Solihull
- Omni Flow Computers Ltd - Bracknell
- Omni Instruments - Dundee
- Omni Pine and Cane Furniture - Edinburgh
- Omnia H.V. & Rail Ltd. - Uttoxeter
- Omnibox Ltd - Chesterfield
- Omnikote Ltd - Aylesbury
- Omnitrack (Ball Transfer Units) Ltd - Stroud
- Omron Automotive Electronic Components UK Ltd - Kingswinford
- Omron Electronics Ltd - Milton Keynes
- Omron Healthcare U K Ltd - Milton Keynes
- On Site Machining Ltd - Southampton
- On Site Maintenance - Abertillery
- On Tap Services - Slough
- On The Level - Leighton Buzzard
- On the Level Property Services Ltd - Leighton Buzzard
- On Time Joinery - London
- On-Line Engineering Services Ltd - Brighton
- Onan Design Associates - Northampton
- Ondrives Ltd - Chesterfield
- One Off Engineering - Barnsley
- One Off Engineering Ltd - Hyde
- One Shot Corporation Ltd - West Malling
- One Step Joinery Ltd - Swindon
- One Stop Bar & Catering Supplies Ltd - Birmingham
- One Stop Mobility Ltd - Woking
- One Stop Sealing Ltd - Hull
- Oner Signs and Leisure - Cardiff
- Ongar Plating Services Ltd - Ongar
- Online Engineering Systems Ltd - Stonehouse
- Online Furnace Services Ltd - Greenock
- Online Packaging Ltd - Gloucester
- Online Plumbing - Abbots Langley
- Onsite Services - Southampton
- Onus - Weymouth
- Onward Design Ltd - Belper
- Onwood and Upwood Staircases - Westcliff on Sea
- Opas Ltd - Worthing
- Open Date Equipment Ltd - Mitcham
- Opg (Precision Tools) Ltd - Rowley Regis
- Opperman Mastergear Ltd - Newbury
- Opra Packaging Ltd - Walsall
- Oprima Ltd - Oxford
- Opt Out Engineering Ltd - Bristol
- OPT4MOBILITY Ltd - Teddington
- Optek Ltd - Abingdon
- Optical Communication Services Ltd - Immingham
- Optical Metrology Centre - Bishops Stortford
- Optical Services and Sales - Newport (Gwent)
- Optical Works Ltd - Newquay
- Opticast Ltd - Walsall
- Optico Ltd - Hitchin
- Opticron - Gillingham
- Optima - London
- Optima Control Solutions Ltd - Blackburn
- Optima Design Associates Ltd - Mansfield
- Optima International Ltd - Doncaster
- Optima Manufacturing Ltd - Forfar
- Optima Stainless - Kings Lynn
- Optimation Ltd - Ilkeston
- Optimeasure Ltd - Bedford
- Optimum Conservatory Roofing Ltd - Bolton
- Optimum Engineering Ltd - Hemel Hempstead
- Optimum Group Services Plc - Greenford
- Optimum Mobility Ltd - Malmesbury
- Optimum Precision Engineering Ltd - Ely
- Optos Plc - Dunfermline
- Opus Engineering Services Ltd - Lowestoft
- Opus Metrology Ltd - Corby
- Opus Stool Co - Hawick
- Ora Technologies - Bristol
- Oracle Storage Systems - Reading
- Oralgate Ltd - Sheffield
- Orange Mountain Bikes Ltd - Halifax
- Oranworth Ltd - Southampton
- Orb Engineering - Motherwell
- Orbit Bearings & Transmission Ltd - Cradley Heath
- Orbital Fasteners Ltd - Watford
- Orbital Foods Ltd - Bury St Edmunds
- Orbital Gas Systems Ltd - Stone
- Orbitec Ltd - Derby
- Orbiter Food Machinery Ltd - Nottingham
- Orchard Blinds and Curtains - Bexleyheath
- Orchard Blinds Southsea Ltd - Southsea
- Orchard Henry & Sons - Par
- Orchard Housecare - Huntingdon
- Orchard Industrial Ltd - Bury St Edmunds
- Orchard Installations - Bristol
- Orchard John & Co - Redruth
- Orchard Materials Ltd - Bristol
- Orchard Partners Consulting Engineers - London
- Orchard R T Scrap Metals - Holsworthy
- Orchard Two Ltd - Bootle
- Orchid Metal Ltd - Leicester
- Organic Recycling - Peterborough
- Organically Coated Steel - Kidderminster
- Oriel Resources Plc - London
- Oriental Motor (Uk) Ltd. - Basingstoke
- Origin Product Design Ltd - Huntingdon
- Original Bathrooms Ltd - Richmond on Thames
- Orinoco Bearings Ltd - Leeds
- Orion - D Gow and Son
- Orion Automation Ltd - Huntingdon
- Orion Blinds Ltd - Blackpool
- Orion Control Systems Ltd - Ashby de la Zouch
- Orion Display - Basildon
- Orion Electrotech Ltd - Reading
- Orion Engineering Ltd - Nantwich
- Orion Engineering Services Ltd - Inverness
- Orion Optics - Crewe
- Orion Precision Castings Ltd - Hayle
- Orion Windows Ltd - York
- ORLIN Technologies Ltd - Bedford
- Orman John - Coventry
- Orme A K & Son - Sheffield
- Ormonde Joinery Products Ltd - Surbiton
- Ormskirk Metal Fabrications Ltd - Ormskirk
- Ormskirk Windows and Joinery - Ormskirk
- Ornamental Gates - Burton on Trent
- Ornamental Ironwork - Ashton under Lyne
- Ornamental Ironwork - Bridlington
- Ornamental Ironworks - Blaydon on Tyne
- Ornamental Metalcraft - Newcastle upon Tyne
- Ornamental Metals - Kirkcaldy
- Ornate - Barnsley
- Oro Ltd - Leeds
- Orostream Air Conditioning Ltd - Crowborough
- Orpington (Joinery) Ltd - Orpington
- Orpington Caravan Centre Ltd - Orpington
- Orscheln Europe - Rugby
- Orseal Ltd - Bolton
- Ortak Jewellery Ltd - Orkney
- Ortho-Clinical Diagnostics - Cardiff
- Orthopaedic Innovation - Sheffield
- Orthos (Engineering) Ltd - Market Harborough
- Orthos Ltd - Bristol
- Ortlinghaus UK Ltd - Bromsgrove
- Ortomotion Ltd - Corby
- Orwell Engineering Co (Liverpool) Ltd - Liverpool
- Orwin Ltd - Washington
- Osborn International Ltd - Chepstow
- Osborn Steel Extrusions Ltd - Bradford
- Osborn Strata Products - Sheffield
- Osborne Engineering Ltd - Cramlington
- Osborne Precision Sheet Metal Ltd - Hungerford
- Osborne Refrigerators Ltd - Bognor Regis
- Osc Process Engineering Ltd - Stockport
- Oscar Faber - London
- Osen Structures - Plymouth
- OSG UK Ltd - Basildon
- Oso Hotwater (U.K.) Ltd - Gateshead
- Osprey Business Systems Ltd - Southampton
- Osprey Windows Ltd - Chester
- OSS Group - Mersey
- Ossett Steel Services Ltd - Pontefract
- Osteotec Ltd - Christchurch
- Osterbery and Lale Precision Grinding - Sunbury on Thames
- Osterley Heating & Plumbing Supplies Ltd - Hounslow
- Oswald Supertex Ltd - Huddersfield
- Oswaldtwistle Mills Ltd - Ripon
- Oswestry Window Blinds Ltd - Oswestry
- Otc Precision Ltd - Wolverhampton
- Othello Blinds Ltd - Colchester
- Otis Lifts Ltd - Leicester
- Otis Ltd - London
- Otleys Pine - Louth
- Ottaway Engineering Ltd - Eastleigh
- Ottawood - Hove
- Otter Vale Co Ltd - Honiton
- Otter Wrought Iron Products - Halstead
- Ottley Controls Ltd - Kettering
- Otto Junker (UK) Ltd - Sutton
- Otto Simon Ltd - Cheadle (Cheshire)
- Ottobock Healthcare Ltd - Leeds
- Oulton Forge - Lowestoft
- Outlane Engineering Company - Huddersfield
- Outlook Stockholders Ltd - Coulsdon
- Outokumpu Stainless Distribution - Sheffield
- Outokumpu Stainless Ltd - Sheffield
- Outrams (Ironmongers) Ltd - Doncaster
- Ouzledale Foundry Co Ltd - Barnoldswick
- Ovako Ltd - Wednesbury
- Ovalway Hydraulic Engineering Ltd - Middlesbrough
- Ove Arup and Partners - Cardiff
- Ove Arup and Partners - Glasgow
- Ove Arup and Partners - Leeds
- Ove Arup and Partners - Solihull
- Ove Arup and Partners - Wrexham
- Ovendens Engineers Ltd - Folkestone
- Ovenstone Engineering - Anstruther
- Over-Wrought - Hastings
- Overmarsh Engineering Ltd - Bicester
- Overprint Packaging Ltd - Harefield
- Overvision Ltd - Barrow in Furness
- Owen A J - Cleckheaton
- Owen Engineering - Cardigan
- Owen Fuels and Boiler Care - Cowbridge
- Owen Holland (Engineering) Ltd - Blandford Forum
- Owen Williams Railways Ltd - Birmingham
- Owens Corning Automotive (Uk) Ltd - Lancaster
- Owlett Jaton Distribution Ltd - Stone
- Owlthorpe Garden Furniture and Fencing - Sheffield
- Oxford - Witney
- Oxford Diecast Ltd - Swansea
- Oxford Engineering Ltd - Abingdon
- Oxford Filtration Ltd - Windsor
- Oxford Precison Components - Oxford
- Oxford Products Ltd - Witney
- Oxford Sensor Technology Ltd - Abingdon
- Oxford Sunblinds - Southampton
- Oxi-Black & Phosphate Ltd - Wednesbury
- Oxman & Walker - Bridgwater
- Oxoid 2000 Ltd - Basingstoke
- Oxtoby Jeffrey - Leeds
- Oxton and Hoylake Iron Works - Wirral
- Oxton Engineering Co Ltd - Birkenhead
- Oxus Gold Plc - London
- Oxy-Dry (U K) Ltd - Stevenage
- Oxylitre Ltd - Manchester
- Oyez Document Production - London
- Ozark Systems - Oldham
- Ozone Industries Ltd - Farnborough
