Company Index
- O and S Gear and Engineering Ltd - Atherstone
- O B W Engineering Services Ltd - Liverpool
- O C B Germanischer Lloyd Ltd - Great Yarmouth
- O C D Engineering - Belfast
- O C Jewellery Manufacturers and Design - Chester
- O D Production and Precision Engineers - Loughborough
- O E S Medical Ltd - Abingdon
- O G Fabrications - Leeds
- O I L Engineering Ltd - Aberdeen
- O K Blinds - Mansfield
- O K Engineering - Oldham
- O Kay Engineering Services Ltd - Market Harborough
- O L D Engineering Co Ltd - Hinckley
- O M D Ltd - Birmingham
- O Mackey - Armagh
- O R S Bearings Ltd - Manchester
- O S Engineering - Liverpool
- O Windows Ltd - Norwich
- O&S Engineering - Launceston
- O'brien Commisioning - Manchester
- O'connor Sutton Cronin - London
- O'dell Signs - Hayle
- O'hagan Caravan Transport and Sales - Newton Stewart
- O'Hanion Engineering - Dungannon
- O'Neill and Co Ltd - Glasgow
- O'neill Ltd - York
- O'Neill WD Transport Ltd - Newry
- O'rouke's Joinery and Glazing Contractors - Hornchurch
- O-Vee Spring Gauges Ltd - Watford
- O1 Advanced Mechanical Services - Maldon
- OA Curtis and Sons - Newmarket
- Oadby Plastics Ltd - Leicester
- Oadby Plastics Ltd - Warrington
- Oak Engineering - Rhyl
- Oak Engineering Co Ltd - Hebburn
- Oak Engineering Recruitment Ltd - Market Harborough
- Oak Farm Leisure - Uxbridge
- Oak Leaf Joinery - Peterborough
- Oak Lodge Designs - Alfreton
- Oak Medical - Northwich
- Oak Refrigeration and Mechanical Services Ltd - Leicester
- Oak Street Fabrication - Norwich
- Oak Tree Cabinet Makers - Swindon
- Oakay Joinery - Llandudno
- Oakdale Contractors - Bradford
- Oakdale Project Management Services Ltd - Doncaster
- Oakdene Joinery - Dartford
- Oakenhurst Aircraft Services - Rayleigh
- Oakes Bros Ltd - Horsham
- Oakfield Woodcraft - Bristol
- Oakham Business Systems Ltd - Preston
- Oakham Engineering - Corby
- Oakham Sheet Metal Co Ltd - West Bromwich
- Oakhanger Joinery - Bordon
- Oakhirst Metals - Aylesbury
- Oakhouse Electronics Ltd - Eye
- Oakland Conservatories - Manchester
- Oaklands Joinery - Liverpool
- Oakleigh Cases Ltd - Potters Bar
- Oakleigh Engineering - Burntwood
- Oakleigh Kitchen Installations Ltd - Crawley
- Oakley Bearings and Transmissions Ltd - Basingstoke
- 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 Interiors Ltd - Oldham
- Oakwood Joinery - Hitchin
- Oakwood Manufacturing - Loughborough
- Oasis Bathroom Centre - Bath
- Oasis Engineering Services Ltd - Saffron Walden
- Oasis Joinery - Gainsborough
- Oasis Metal Products - Monmouth
- Oast Joinery - Sittingbourne
- Oaston Engineering Ltd - Nuneaton
- Oasys Technologies Ltd - Letchworth
- OBD Systems Ltd - Trowbridge
- Obek UK Ltd - Wellingborough
- Obelisk Engineering - Wellingborough
- Oberon Engineering Ltd - Havant
- Obscura Access - Braintree
- OCCO Coolers Telford Ltd - Telford
- Ocean Bathroom Products Ltd - Hatfield
- Ocean Eering - South Ockendon
- Ocean Kinetics Ltd - Shetland
- Ocean Yacht Systems Ltd - Bury
- Oceaneering International Services Ltd - Aberdeen
- Oceanlab - Ellon
- Oceanteam 2000 Ltd (ot2k) - Great Yarmouth
- Oceantecs Ltd - Hartlepool
- Ochre Woodcraft - Bolton
- Ockley Timber and Steel - Birmingham
- Ocme UK Ltd - Newbury
- OCS Group UK Ltd - Manchester
- Octo Product Development Ltd - Gateshead
- Octopus Collation Solutions Ltd - Derby
- Octopus Sign Writing - Norwich
- Odeisis Foods - London
- Odescan Ltd - Chelmsford
- Odin Consulting Engineers Ltd - Glasgow
- Odin Engineering Ltd - Coventry
- Odlings MCR Ltd - Ellesmere Port
- Odour Services Ltd - Stafford
- Odyssey Blinds - Westcliff on Sea
- Odyssey Technologies Ltd - Farnham
OEM Automatic Ltd - Leicester- Oerlikon Balzers - Milton Keynes
- Oetiker UK Ltd - Horsham
- Of This Earth (GCNC Ltd) - Blackburn
- Off Road Ltd - Belfast
- Off Roaders - Neath
- Off Zero Ltd - Cullompton
- Offa Industries Ltd - Knighton
- Offaplan Ltd - Daventry
- Office Aids Displays - Enfield
- Office Green Technologies - Brentwood
- 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
- Ogden Steve Engineering - York
- Ogilby Construction Ltd - Chesterfield
- OGP UK Ltd - Derby
- OHM Security Ltd - Leeds
- Ohmicron Ltd - Poole
- OHRA UK Office - Mansfield
- Oil and Gas Boiler Services - Widnes
- Oil and Gas Fabrications Ltd - Swansea
- Oil and Gas Firing Services Ltd - Honiton
- Oil and Gas Systems Ltd - Ely
- Oil Boiler Servicing - Newtown
- Oil Salvage Ltd - Bootle
- Oil Services Ltd - Okehampton
- Oil States Industries UK Ltd - Aberdeen
- Oil States Klaper Ltd - Aberdeen
- Oilfast Scotland Ltd - Bellshill
- Oilgear Towler Ltd - Leeds
- Oilite Bearings Ltd - Ipswich
- Oilways - Sandbach
- OIM International Ltd - Beccles
- OIS plc - Southampton
- Oji Intertech Ltd - Mansfield
- OK International (Europe) Ltd - Bury St Edmunds
- OK Services - Sutton in Ashfield
- Oka Direct Ltd - London
- Okane Window Services - Magherafelt
- OKW Enclosures Ltd - Fareham
- Olay Metal Workers Ltd - London
- Old Bexley Pine - Bexley
- Old Chapel Machining Centre - Swindon
- Old Coach House - Pudsey
- Old Creamery - Yeovil
- Old Devon Pine - Honiton
- Old English Joinery Co The Ltd - Colchester
- Old Ford Catering Equipment Centre - London
- Old Forge Pine - Stalybridge
- Old Forge Pine Furniture - Lewes
- Old Manse Joinery - Coleraine
- Old Norfolk Pine Furniture - Kings Lynn
- Old Oak Engineering - Blaenavon
- Old Park Ltd - Cradley Heath
- Old Pine and Design - Ringwood
- Old Pine and Pieces - North Berwick
- Old Pine Factory - Ripley
- Old Pine Workshop - Norwich
- Old Smithy Gate Co - Rhyl
- Old Toll House - Worcester
- Old Town Engineering Co Ltd - Swindon
- Old Wolf Technologys Ltd - Northampton
- Oldbury Engineering Co Ltd - Horley
- Oldbury UK Ltd - Wolverhampton
- Olde Mill Caravans - Ballymoney
- Olde Petes Garden Furniture - Shepton Mallet
- Olde Potting Shed Co - Rowlands Gill
- Olde Worlde Oak Joinery - Cannock
- Oldenburg Group Incoperated - Mansfield
- 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
- Oldstyle Engineering and Stonemasonry Services - Larne
- OLE (UK) Ltd - Chichester
- Olenol Ltd - Congleton
- Oleo International - Coventry
- Olicana Products - Ilkley
- Olikat Fabrications - Scunthorpe
- Olivari UK Ltd - Brentwood
- Olive and Padgett Ltd - Heckmondwike
- Olive Branch - Wetherby
- Oliver - Dorchester
- Oliver and Macleod - Inverurie
- Oliver Douglas Ltd - Leeds
- Oliver Goldsmith Eyewear Ltd - Borehamwood
- Oliver Machinery Co Ltd - Stockport
- Oliver Martin - March
- Oliver's Army Ltd - Worcester
- Olivers Blinds - Littleborough
- Ollyswood Joinery - Pulborough
- Olmec Advance Materials Ltd - Preston
- Olney Pine and Picture Gallery - Milton Keynes
- Olney Pine Picture Gallery - Olney
- Olney Precision Ltd - Olney
- Olton Transmissions - Birmingham
- Olver - Bath
- Olver and Rawden Consulting Forensic Engineers - Coventry
- Oly-Tech Ltd / Olympic Removals Ltd - Enfield
- Olympia Fabrications Ltd - Wolverhampton
- Olympia Metal Spinners - Leeds
- Olympia Test and Crane Ltd - Brierley Hill
- Olympia Triumph Manufacturing Ltd - Swanage
- Olympic Automation - Birmingham
- Olympic Coachbuilders Ltd - Abingdon
- Olympic Conveyor Services Ltd - St Austell
- Olympic Pine - Wakefield
- Olympic Welding Ltd - Norwich
- Olympic-Chevin - Carlisle
- Olympus Technologies Ltd - Huddersfield
- Olympus Transmissions Ltd - Wolverhampton
- Omagh Minerals Ltd - Omagh
- Omar Homes Ltd - Brandon
- Omarco - Cardiff
- Omars UK Ltd - Newport (Gwent)
- OMC Joinery - Ilkeston
- Omec Engineering Solutions Ltd - Leeds
- Omega Blacksmiths - Glasgow
- Omega Building Services Ltd - Caterham
- Omega Citylifts Ltd - Welwyn Garden City
- Omega Controls - Newark
- Omega Design and Development Ltd - Wolverhampton
- Omega Diagnostics Ltd - Alloa
- Omega Doors - Preston
- Omega Electronics Ltd - Bishop Auckland
- Omega Environmental Technologies (UK) - London
- Omega Fasteners Ltd - Loughborough
- Omega Foundry Machinery Ltd - Peterborough
- Omega Handling - Colchester
- Omega Handling Supplies - Ipswich
- Omega House Furniture - Thirsk
- Omega Laser Systems Ltd - Crawley
- Omega Lift Services Ltd - Edinburgh
- Omega Metrology Ltd - Northampton
- Omega Pistons Ltd - Halesowen
- Omega Signs Ltd - Leeds
- Omega Technical Research Ltd - Aberdeen
- Omega Technical Services - Wrexham
- Omega TK Ltd - Brecon
- Omega Windows - Middlesbrough
- Omega Wire Ltd - Brierley Hill
- Omegaslate (UK) Ltd - Kidderminster
- Omex Medical Ltd - Littlehampton
- Omicron Cutting Technology Ltd - Bristol
- OML Ltd - Ashton under Lyne
- Omni Design International Ltd - Solihull
- Omni Instruments - Dundee
- Omni Pine and Cane Furniture - Edinburgh
- Omnia HV 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 - Milton Keynes
- ON Beck and Co Ltd - London
- On Signs - Castleford
- 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 Wing Support - Feltham
- On-Line Engineering Ltd - Redhill
- On-Line Engineering Services Ltd - Brighton
- Onan Design Associates - Northampton
- Ondrives Ltd - Chesterfield
- One 11 MX Ltd - Altrincham
- One Off Engineering - Barnsley
- One Off Engineering Ltd - Hyde
- One Shot Corporation Ltd - West Malling
- One Step Joinery - Swindon
- One Stop Bar and Catering Supplies - Birmingham
- One Stop Mobility - Liverpool
- One Stop Mobility - Woking
- One Stop Sealing Ltd - Hull
- One To 1 Engineering Appointments - Dunstable
- Oneill Medicalia Ltd - Liverpool
- Oner Signs and Leisure - Cardiff
- Ongar Plating Services Ltd - Ongar
- Online Engineering Systems Ltd - Stonehouse
- Online Furnace Services Ltd - Greenock
- Online Jigs and Fixtures (Letchworth) Ltd - Arlesey
- 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
- Open House Interiors Ltd - Epsom
- Operon - Newcastle upon Tyne
- OPG (Precision Tools) Ltd - Rowley Regis
- Opperman Mastergear Ltd - Newbury
- Opra Packaging Ltd - Walsall
- Oprima Ltd - Oxford
- Opt 4 Mobility - Teddington
- Opt Out Engineering Ltd, - Bristol
- OpTek Systems - 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
- Optim - Cowdenbeath
- Optima - London
- Optima Control Solutions Ltd - Blackburn
- Optima International Ltd - Doncaster
- Optima Manufacturing Ltd - Forfar
- Optima Signs and Engraving - Manchester
- Optima Stainless - Kings Lynn
- Optima-Design Services Ltd - Mansfield
- Optimal Technologies Ireland - Ennis
- Optimation Ltd - Ilkeston
- Optimeasure Ltd - Bedford
- Optimum Conservatory Roofing Ltd - Bolton
- Optimum Engineering Ltd - Hemel Hempstead
- Optimum Group Services plc - Greenford
- Optimum Mobility - Malmesbury
- Optimum Precision Engineering Ltd - Ely
- Options For Independent Living - London
- Optomech Engineering - Shaftesbury
- Optos plc - Dunfermline
- Opus Engineering Services Ltd - Lowestoft
- Opus Fabrication - Redditch
- Opus International Consultants Ltd - Nottingham
- Opus Metrology Ltd - Corby
- Opus Stool Co - Hawick
- Ora Home - Burgess Hill
- Ora Technologies - Bristol
- Oracle Storage Systems - Reading
- Orange Mountain Bikes Ltd - Halifax
- Orangerie - Cambridge
- Orashe Heating and Plumbing Services - London
- Orb Engineering - Motherwell
- Orbimatic Ltd - Peterborough
- Orbis Engineering Ltd - Retford
- Orbit Bearings and Transmission Ltd - Cradley Heath
- Orbit Design - Frome
- Orbital Fasteners Ltd - Watford
- Orbital Food Machinery - Bury St Edmunds
- Orbital Gas Systems Ltd - Stone
- Orbitec Ltd - Derby
- Orbiter Food Machinery Ltd - Nottingham
- ORCA Ltd - Bordon
- Orchard Blinds and Curtains - Bexleyheath
- Orchard Blinds Southsea Ltd - Southsea
- Orchard Henry - Par
- Orchard Housecare - Huntingdon
- Orchard Industrial Ltd - Bury St Edmunds
- Orchard Installations - Bristol
- Orchard Materials Ltd - Bristol
- Orchard Partners Consulting Engineers - London
- Orchard Two Ltd - Bootle
- Orchard Works Joinery Ltd - Ilkeston
- Orchid Metal Ltd - Leicester
- Organic Recycling - Peterborough
- Organically Coated Steel - Kidderminster
- Oriel Resources Plc - London
- Orient International Ltd - Wembley
- Oriental Motor Co Ltd - Basingstoke
- Origin Product Design - Huntingdon
- Original Artists Of Kent - Faversham
- Original Bathrooms Ltd - Richmond on Thames
- Original Metal Craft and Fabrication - Bewdley
- Original Mix Ltd - Umberleigh
- Orinoco 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 Display - Chelmsford
- 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
- Oriorn Engineering Services - Cardiff
- ORLIN Technologies Ltd - Bedford
- Orman Engineering - Coventry
- Orme AK and Son - Sheffield
- Ormonds Joinery Products - Surbiton
- Ormskirk Metal Fabrications - Ormskirk
- Ormskirk Windows and Joinery - Ormskirk
- Ornamental Fittings - Erith
- Ornamental Gates - Burton on Trent
- Ornamental Iron Work - Swanage
- Ornamental Ironwork - Ashton under Lyne
- Ornamental Ironwork - Bridlington
- Ornamental Ironworks - Blaydon on Tyne
- Ornamental Metalcraft - Newcastle upon Tyne
- Ornamental Metals - Kirkcaldy
- Ornate - Barnsley
- Ornate Ironcraft - Doncaster
- Ornate Ironworks - Harwich
- Oro Ltd - Gerrards Cross
- Oro Ltd - Leeds
- Orostream Air Conditioning Ltd - Crowborough
- Orpington Caravan Centre - Orpington
- Orpington Ltd - Orpington
- Orscheln Europe - Rugby
- Orseal Ltd - Bolton
- Orsi Ltd - Billingshurst
- Ortak Jewellery Ltd - Orkney
- Ortho Clinical Diagnostic - Cardiff
- Orthopaedic Innovation - Sheffield
- Orthos Ltd - Bristol
- Orthos Projects Ltd - Market Harborough
- Ortlinghaus UK Ltd - Bromsgrove
- Ortomotion Ltd - Corby
- Orwell Engineering Co (Liverpool) Ltd - Liverpool
- Orwin Ltd - Washington
- Os Ltd - Minehead
- Osborn International Ltd - Chepstow
- Osborn Steel Extrusions Ltd - Bradford
- Osborn Strata Products - Sheffield
- Osborne Business Enterprises - Chichester
- 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
- OSF Ltd - Wolverhampton
- OSG UK Ltd - Basildon
- OSL Walden Engineering Ltd - Sheffield
- Osmetech plc - Crewe
- Osney Marine Engineering Co - Oxford
- OSO Hotwater (UK) Ltd - Gateshead
- Osprey Business Systems Ltd - Southampton
- Osprey Engineering - Motherwell
- Osprey Windows - Chester
- OSS Group - Mersey
- Ossett Steel Services Ltd - Pontefract
- Osteotec - Christchurch
- Osterbery and Lale Precision Grinding - Sunbury on Thames
- Osterley Heating and Plumbing Supplies Ltd - Hounslow
- Oswald Supertex Ltd - Huddersfield
- Oswaldtwistle Mills - Ripon
- Oswestry Window Blinds Ltd - Oswestry
- OT Systems - Southampton
- Otago Cycle Sport - Manchester
- Otamco Ltd - Stamford
- OTC Precision Ltd - Wolverhampton
- Othello Blinds Ltd - Colchester
- Other Way Ltd - Bognor Regis
- Otis Lifts Ltd - Leicester
- Otis Ltd - London
- Otleys Pine - Louth
- OTM Servo Mechanism Ltd - Egham
- Ottaway Engineering Ltd - Chandlers Ford
- Ottawood - Hove
- Otter Forge Engineering - Sidmouth
- Otter Vale Co Ltd - Honiton
- Otter Wrought Iron - Halstead
- Ottley Controls Ltd - Kettering
- Otto Junker (UK) Ltd - Sutton
- Otto Simon Ltd - Cheadle (Cheshire)
- Ottobock Healthcare Ltd - Leeds
- Ottoman Upholstery - London
- Oulton Forge - Lowestoft
- Outback Saddles - Pershore
- Outerpine Ltd - Retford
- Outlane Engineering Company - Huddersfield
- Outlook Stockholders Ltd - Coulsdon
- Outokumpu Holton Ltd - Bournemouth
- Outokumpu Ltd - Sheffield
- Outokumpu Stainless Distribution - Coatbridge
- Outokumpu Stainless Distribution - Sheffield
- Outram Field and Co Ltd - Doncaster
- Outsourcing Design Ltd - Altrincham
- Outwood Grinding Co - Manchester
- Ouzledale Foundry - Barnoldswick
- Ovako Ltd - Wednesbury
- Ovalway Hydraulic Engineering Ltd - Middlesbrough
- Ove Arup and Partners - Belfast
- Ove Arup and Partners - Cardiff
- Ove Arup and Partners - Glasgow
- Ove Arup and Partners - Leeds
- Ove Arup and Partners - Liverpool
- Ove Arup and Partners - Solihull
- Ove Arup and Partners - Wrexham
- Ovenden Engineering - Folkestone
- Ovenstone Engineering - Anstruther
- Over Wrought Engineering - Holywell
- Over-Wrought - Hastings
- Overmarsh Engineering - Bicester
- Overmarsh Engineering - Derby
- Overprint Packaging Ltd - Harefield
- Overton Plating Co - Farnham
- Overton WH Ltd - Gillingham
- Overvision Ltd - Barrow in Furness
- Owen Engineering - Cardigan
- Owen Fuels and Boiler Care - Cowbridge
- Owen Holland (Engineering) Ltd - Blandford Forum
- Owen Williams - Barrow in Furness
- Owen Williams - Chichester
- Owen Williams Ltd - Sheffield
- Owen Williams Railways Ltd - Birmingham
- Owens Corning Automotive Ltd - Lancaster
- Owl Video Systems Ltd - Uckfield
- Owlett - Kingston upon Thames
- 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 Investment and Consulting Group plc - Abingdon
- Oxford Precison Components - Oxford
- Oxford Products Ltd - Witney
- Oxford Sensor Technology Ltd - Abingdon
- Oxford Sunblinds - Southampton
- Oxford Time Recorders - Witney
- Oxi-Black and Phosphate Ltd - Wednesbury
- Oxman and Walker - Bridgwater
- Oxoid Ltd - Basingstoke
- Oxton and Hoylake Iron Works - Wirral
- Oxton Engineering Co Ltd - Birkenhead
- Oxus Gold Plc - London
- Oxy-Dry UK Inc - Stevenage
- Oxylitre Ltd - Manchester
- Oyez Document Production - London
- Oystertec Plc - York
- Ozark Systems - Oldham
- Ozone Industries Ltd - Farnborough
