Company Index
- O C & C Strategy Consultants Ltd. - London
- O'Bryne & Kennedy - Waltham Cross
- O'Hara Waste Oils - Uxbridge
- O'Herlihy & Co. Ltd. - Glasgow
- O'Neill Peck Associates Ltd. - Worksop
- O'Neill Strategic Management - Southampton
- Oak House Consulting Group - Brixham
- Oak I T Management Services Ltd. - Bristol
- Oakbridge Business Consultants - Halstead
- Oakbridge Services Ltd. - Warminster
- Oakdene Hollins Ltd - Aylesbury
- Oakfield Consultancy Partnership, The - Chester
- Oakland Calvert Consultants Ltd. - London
- Oakland Consulting Plc - Leeds
- Oakleigh Consulting Ltd. - Manchester
- Oaktree Executive Ltd. - Yateley
- Oaktree Interiors Ltd. - Wokingham
- Oakwell Management Services Ltd. - Ilkeston
- Oakwood Environmental Ltd. - Godalming
- Oasis Europe Ltd. - Reading
- Oasis Recruitment Group Ltd. - Fareham
- Oasis Search Ltd. - London
- OBR Occupational Services Ltd - Telford
- Oca U K Ltd - Liverpool
- Occ Computer Personnel (Northern) Ltd. - Nantwich
- Occupational Health & Environmental Assessments Ltd. - Waterlooville
- Occupational Performance Solutions Ltd. - Worcester
- Ocean Resourcing Solutions Ltd. - London
- Ocelot Systems Ltd. - Warminster
- Ochre Management Services Ltd. - Ashford
- Oco Consultants Ltd. - Belfast
- Octarine Investments Ltd - Bristol
- Octopus Cabling Ltd. - Colchester
- Office Angels Ltd - Portsmouth
- Office Essentials - Winsford
- Office Express - Sutton Coldfield
- Office of the High Commissioner for Ghana - London
- Office People Recruitment Ltd - Woking
- Officestar Group Ltd. - Coleford
- Official Space - London
- Offrisk Consulting Ltd. - Glasgow
- OFTEC - Ipswich
- Ohs Ltd. - Birmingham
- Oil Masters - Newton Abbot
- Oil Spill Response & East Asia Response Ltd. - London
- Old Bell 3 Ltd. - Ludlow
- Old House Interim Services Ltd. - Evesham
- Old Park Farming (Lytchett) Ltd. - Poole
- Olive Domestic Metering Ltd - Abingdon
- Oliver Scott Consulting Ltd. - London
- Oliver Wyman Ltd. - London
- Olliver Communications - Godstone
- Ology Coaching - Warrington
- Olsberg / Spi Ltd. - London
- Olsen & Co - Leicester
- Olson Projects Ltd - Lytham St Annes
- Olympic Staff Agency - London
- Omega Partnership - Liverpool
- Omega Performance - London
- Omega Resource Group Plc - Stonehouse
- Omega Resources Ltd - Alloa
- Omex - Dunfermline
- Omitec Resources - Coventry
- Omnia Offices Ltd. - Sheffield
- Omniarc Ltd - Altrincham
- Omnium IT Recruitment Ltd - Stoke on Trent
- On Demand Management Ltd. - London
- On Target Recruitment Ltd. - Surbiton
- One Stop Promotions (Leicester) Ltd - Leicester
- Online Resourcing Group Ltd - Leeds
- Onlink Consultants Ltd. - Larne
- Ontrack International Ltd. - Bishops Stortford
- Onyx Recruitment Associates Ltd. - Luton
- Onyx Total Waste Management - Walsall
- Opagus Marketing Ltd. - Neath
- Opal Management Consultancy - Caerphilly
- Opale Management Services Ltd. - Sandhurst
- Opco(Uk) Ltd. - London
- Open Minds Consultants Ltd. - Evesham
- Open Minds Consulting Ltd. - Conwy
- Operational Command Training Organisation Ltd - Chester
- OPP Ltd - Oxford
- Opsa House Business Centre - York
- Optima Consulting Partners Ltd. - Guildford
- Optimise Outsourced Business Development Ltd. - Berkhamsted
- Optimum Nationwide - Milton Keynes
- Optimum Sales Results Ltd. - Belper
- Option Hygiene Ltd. - Nelson
- Options Employment Ltd - Hounslow
- Optis Europe Ltd. - Grimsby
- Optometric Technology Group Ltd. - London
- Opus Resourcing Ltd. - Beckenham
- Opus Staff Ltd - Belfast
- Orbach & Chambers Services Ltd. - London
- Orbit Services 2000 Ltd. - Leeds
- Orchard Consulting (Gb) Ltd. - Hook
- Orega (Staines) Ltd. - Staines
- Organics Ltd - Coventry
- Organisation & People Development Ltd - Leamington Spa
- Organisational & Personal Development Consultants Ltd. - Sherborne
- Origo Services Ltd. - Currie
- Orion Business Centres Ltd. - Stamford
- Orion Clinical Services Ltd. - Slough
- Orion Electrotech Ltd - Reading
- Orion Professional Services Ltd - Aylesbury
- Orion Project Support Resources Ltd. - Irvine
- Orion Resourcing Ltd - Aylesbury
- Ormeau Enterprises Ltd. - Belfast
- ORS UK Ltd - Burton on Trent
- Oryx (Executive Search) Ltd. - Bristol
- Osirian Consulting Ltd. - Reading
- Osprey Recruitment Ltd - Monmouth
- Othergroup Ltd - Bristol
- Oto Models - Windlesham
- Otsuka Pharmaceutical Co. Ltd. - London
- Outside in (Cambridge) Ltd. - Cambridge
- Outside Uk Ltd. - Leeds
- Outsights Ltd. - London
- Outsource U K Ltd. - Swindon
- Outstanding Outcomes Ltd. - Farnborough
- Overseas Development Institute - London
- Owen Payne Recruitment Services Ltd. - Wolverhampton
- OWM&M Design Ltd - Hastings
- Ownglen Ltd. - Wakefield
- Oxford & District Chamber of Commerce - Oxford
- Oxford Analytical Ltd. - Bicester
- Oxford Bio Medica Ltd - Oxford
- Oxford Biosphere Ltd. - Oxford
- Oxford City Centre Managment Co. - Oxford
- Oxford Intelligence Ltd. - Milton Keynes
- Oxford Plastics Consultancy Ltd. - Burgess Hill
- Oxford Vacuum Science Ltd. - Chipping Norton
- Oxley Fitzpatrick & Associates Ltd. - Worksop
- Oyster Partnership, The - London
- Oyster Retail Recruitment - Manchester
