| Orcades Marine Management Consultants Ltd. | Kirkwall | A rating |
| Orcan Intelligence Ltd | London | A rating |
| Orchard Care (South West) Ltd | Weston-Super-Mare | A rating |
| ORCHARD CARE GROUP LIMITED | Wrexham | A rating |
| ORCHARD CARE HOMES | Harrogate | A rating |
| Orchard Convenience Stores Limited | Lydney | A rating |
| Orchard Corner Ltd | Leamington Spa | A rating |
| Orchard Global Asset Management LLP | London | A rating |
| ORCHARD GREEN LTD | Hartlepool | A rating |
| Orchard Healthcare (Norfolk) Ltd | Kings Lynn | A rating |
| Orchard Hill College Academy Trust | Sutton | A rating |
| Orchard Homes Limited | Nottingham | A rating |
| Orchard house (midlands) limited | sutton coldfield | A rating |
| ORCHARD HOUSE NURSING HOME LTD | MABLETHORPE | A rating |
| Orchard House, Bath Ltd | Bath | A rating |
| Orchard Lea Nursing Home | Cullompton | A rating |
| Orchard Learning Alliance | Woodley | A rating |
| Orchard Manor View Limited | Leicester | A rating |
| Orchard Medical Practice | Mansfield | A rating |
| Orchard Mushrooms Ltd | Loughgall | A rating |
| Orchard Orthodontics | London | A rating |
| Orchard Orthodontics (Brixton) Limited | London | A rating |
| Orchard Park Homes (BP) Ltd. | Eastbourne | A rating |
| Orchard Restaurant Ltd | Blackpool | A rating |
| ORCHARD ROAD DENTAL PRACTICE LTD | FORESS | A rating |
| Orchard Surgery | Stoke on Trent | A rating |
| Orchard Surgery and Partners | Dereham | A rating |
| Orchard Therapeutics (Europe) Limited | London | A rating |
| Orchard Veterinary Centre Ltd | Oldbury | A rating |
| Orchard View Care Services LTD | Crediton | A rating |
| Orchard Views Residential Care Home | Barnsley | A rating |
| ORCHARDS PHARMACY | WEST DRAYTON | A rating |
| Orchestra of the Age of Enlightenment | London | A rating |
| Orchestra Technologies Limited | London, England | A rating |
| ORCHESTRATING IDENTITY LIMITED | CROYDON | A rating |
| Orchid Am Limited | Manchester | A rating |
| Orchid Assisted Living Limited | Huddersfield | A rating |
| Orchid Beauty Salon ltd | London | A rating |
| Orchid Care Homes Limited t/a Springfield Care Home | March | A rating |
| Orchid Dental Practice | London | A rating |
| Orchid Global Sourcing Ltd | London | A rating |
| Orchid Home Care Support Limited | Bolton | A rating |
| Orchid House Surgery | Ferndown | A rating |
| ORCHID MANAGEMENT LIMITED T/A COSMO BRISTOL | BRISTOL | A rating |
| Orchid Money Transfer Ltd | London | A rating |
| Orchid NW Ltd TA Zumuku Sushi | Manchester | A rating |
| Orchid Private Company Limited | London, | A rating |
| Orchid Supported Living Limited | Birmingham | A rating |
| Orchid Wellness Limited | Fleet | A rating |
| Orchid Woodlands Healthcare Ltd | Manchester | A rating |
| Orchids Care Ltd | Doncaster | A rating |
| Orchis Living Ltd | Farnborough | A rating |
| Orci Trials Limited | Solihull | A rating |
| Orcom Civvals Limited | London | A rating |
| Orcone Care Ltd | Birmingham | A rating |
| ORCP GP (UK) Limited | London | A rating |
| Ordara Limited | Andover | A rating |
| ORDEN Ltd | London | A rating |
| ORDER 2 EAT | BEDFORD | A rating |
| ORDER CHIMPS LTD | Barnet | A rating |
| ORDER FIRST LIMITED (CRN 11407480) | Ilford | A rating |
| Order Line Limited (T/A Church Pharmacy) | Loughborough | A rating |
| Order of Cistercians of the Strict Observance | Tenby | A rating |
| Order of Friars Minor CIO | Woodford Green | A rating |
| Order of St Augustine | London | A rating |
| Order of the Most Holy saviour of St. Bridget | Iver Heath | A rating |
| ORDERE UK LIMITED | Portsmouth | A rating |
| Orderlion UK LTD | London | A rating |
| Orderly Transition Limited | London | A rating |
| ORDERSYS LIMITED | London | A rating |
| Ordevo Limited | Ilford | A rating |
| Ordinary Lifestyles | Failsworth | A rating |
| Ordnance Survey Ltd | Southampton | A rating |
| Ordtek Ltd | Colchester | A rating |
| Ordu Consultancy Ltd | London | A rating |
| ORDU LIMITED | SOUTHAMPTON HAMPSHIRE | A rating |
| ORE Operations Limited | London | A rating |
| OREAN PERSONAL CARE LIMITED | Cleckheaton | A rating |
| Oregano Limited | London | A rating |
| Orege UK Limited | Stoke-on-Trent | A rating |
| Oregon Care Limited | Redhill | A rating |
| Orems Care Services Limited | Glasgow | A rating |
| Oremus Accountants Limited | Wirral | A rating |
| Oremus Dental Ltd | London | A rating |
| Orennia UK Limited | London | A rating |
| ORESA LIMITED | HARROGATE | A rating |
| Orfonyx Bio Ltd | Oxford | A rating |
| ORG Construction LTD | Guildford | A rating |
| Org Health Limited | Norwich | A rating |
| Organic Family Chiropractic | Cheltenham | A rating |
| ORGANIC GAINS LTD | Halifax | A rating |
| ORGANIC GRAPE SPIRIT LTD | Ashford | A rating |
| Organic Milk Suppliers Co-operative Limited | Weston-super-Mare | A rating |
| Organic Plus Couk Ltd | London | A rating |
| Organic Village Market | Tonbridge | A rating |
| Organic Village Market Limited | Kent | A rating |
| Organicco Ltd | Slough | A rating |
| Organisation of Culture and Character | Luton | A rating |
| Organisational Reflections Limited | Saline | A rating |
| Organise Platform HQ Ltd | London | A rating |
| Organix Consulting Limited | Newcastle upon Tyne | A rating |
| Organon Pharma (UK) Limited | Cramlington | A rating |
| OrganOx Limited | Oxford | A rating |
| ORGANZA FASHIONS LTD | Birmingham | A rating |
| ORGROW LIMITED | London | A rating |
| Orgvue Limited | London | A rating |
| Ori healthcare ltd | Andover | A rating |
| Ori Industries 1 Ltd | London | A rating |
| OriBiotech Ltd | London | A rating |
| Orica UK Ltd | Warrington | A rating |
| Oricon Ltd | Birmingham | A rating |
| Oriel Healthcare Group Management Ltd | London | A rating |
| Oriel Healthcare Limited | Stourbridge, | A rating |
| Oriel Surgery | ANTRIM | A rating |
| ORIENT ARCHITECTURAL SYSTEMS LTD | Barking | A rating |
| ORIENT CABLE (NBO UK) LTD. | London | A rating |
| ORIENT MONEY TRANSFER LTD | Manchester | A rating |
| Orient Property Services Ltd | Essex | A rating |
| Orient Real Estates Ltd T/A Century21 Barking and Dagenham | Barking | A rating |
| Orient Retail Airdrie Ltd T/A SAB OF SCOTLAND | Airdrie | A rating |
| Oriental 8 Limited | Chelmsford | A rating |
| Oriental Bu Trading Ltd | Bicester | A rating |
| ORIENTAL CARE 4 YOUR HEALTH LIMITED | Cornwall | A rating |
| ORIENTAL CHERRY LIMITED | Leicester | A rating |
| Oriental Club (1824) Limited | London | A rating |
| ORIENTAL CUSINE LIMITED T/A ORIENTAL CUSINE | London | A rating |
| Oriental Food Edinburgh Ltd t/a New Fortune Cookie | Edinburgh | A rating |
| Oriental Food Express Limited | Shrewsbury | A rating |
| Oriental Food Fusion Ltd t/a Miyoshi Restaurant | Reigate | A rating |
| Oriental Merchant (Europe) Limited | Southampton | A rating |
| Oriental Motor (UK) Ltd | Basingstoke | A rating |
| ORIENTAL PRINTING LIMITED | TIBURY | A rating |
| Oriental Thai Cuisine Ltd T/A. Tiger Lily | Osterley | A rating |
| ORIFLAME INVESTMENT HOLDING PLC | London | A rating |
| Oriflamme Ltd | London | A rating |
| Origami Risk Ltd | London | A rating |
| Origin Benefits Limited | London | A rating |
| Origin Care Homes (Holbeach) Limited | Spalding | A rating |
| Origin Co. and Ltd. | Welwyn Garden City | A rating |
| Origin Coffee | Porthleven | A rating |
| Origin Commodities Limited | London | A rating |
| Origin Control Solutions Limited | Preston | A rating |
| Origin Design Studio Ltd | Lincoln | A rating |
| Origin Education UK International Cultural Exchange Ltd | London | A rating |
| Origin Frames Limited | High Wycombe | A rating |
| Origin Import and Export Limited | Bradford | A rating |
| Origin Primary Limited | London | A rating |
| Origin Recruitment Ltd | Lancaster | A rating |
| Origin Tattoo Ltd | London | A rating |
| Origin Tech Ltd | Newcastle Upon Tyne | A rating |
| ORIGIN UK ENERGY SERVICES LIMITED | Derby | A rating |
| Origin vets clinic | Cardiff | A rating |
| Origin Wine Ltd | Banbury | A rating |
| Origin3 Ltd | Bristol | A rating |
| Original Additions (Beauty Products) Limited | Middlesex | A rating |
| Original Animals Limited | London | A rating |
| Original Biryaniwala London Limited | Wembley | A rating |
| Original BTC | Witney | A rating |
| Original Business IT Solutions LTD | Barry | A rating |
| Original Field of Architecture Ltd | Oxford | A rating |
| ORIGINAL GARLIC FLAMES LTD | Rochdale | A rating |
| Original Hungry Bites Ltd | Stockton-On-Tees | A rating |
| Original Khyber+ Ltd | Glasgow | A rating |
| Original Limited | Shrewsbury | A rating |
| ORIGINAL MILE END KITCHEN LIMITED | London | A rating |
| Original RM Ltd | Belfast | A rating |
| Original Talent Limited | London | A rating |
| Original Third Eye Restaurant Ltd | Manchester | A rating |
| Original Travel Company Ltd | London | A rating |
| Origins Group Ltd | Shropshire | A rating |
| Origio Limited | Fareham | A rating |
| Oriol Associates Limited | London | A rating |
| Oriole Networks Ltd | London | A rating |
| Orion (GB) Limited | Southall | A rating |
| Orion Access (Equipment) Ltd | Erith | A rating |
| Orion Alloys Limited | Harlow | A rating |
| ORION ATLANTIC LTD | Manchester | A rating |
| Orion Capital Managers (UK) Limited | London | A rating |
| Orion Care Edinburgh Limited | Edinburgh | A rating |
| Orion Care Services (MIDLANDS) LTD | Solihull | A rating |
| ORION CLINICAL SERVICES LIMITED | Merthyr Tydfil | A rating |
| Orion Education | Chislehurst | A rating |
| Orion Engineering Services Limited | Inverness | A rating |
| Orion Fire Engineering Ltd | Manchester | A rating |
| Orion foods limited | London | A rating |
| Orion Global Advisors UK Limited | London | A rating |
| Orion Health Limited | London | A rating |
| Orion Healthcare Ltd | Culford, Bury St Edmunds | A rating |
| ORION HEALTHCARE SOLUTIONS LTD | BIRMINGHAM | A rating |
| Orion Incorporation Ltd T/A halalworld | Birmingham | A rating |
| Orion Innovation Solutions UK Limited | Stevenage | A rating |
| Orion MIS Limited | Chichester | A rating |
| ORION OXFORD OPCO LIMITED TRADING AS Courtyard By Marriott Oxford City Centre | OXFORD | A rating |
| Orion Pharma (UK) Ltd | Reading | A rating |
| Orion Practice Management Systems Ltd | GLASGOW | A rating |
| Orion Resources Partners (UK) LLP | London | A rating |
| Orion Technologies Limited | London | A rating |
| Orion Training and Development Ltd | Birmingham | A rating |
| ORION TRAVELS GLOBAL LIMITED | London | A rating |
| ORIRI Marketing | Manchester | A rating |