| Coleg Llanymddyfri Cymru | Llandovery | A rating |
| COLEHERNE LIMITED T/A COLEHERNE | HYDE | A rating |
| Coleman & Company Ltd | Birmingham | A rating |
| Coleman Research Limited | Reading | A rating |
| Coler Supply Solutions Intl Ltd | Tamworth | A rating |
| coleraine church of christ | coleraine | A rating |
| Coleraine Cricket Club | Coleraine | A rating |
| Coleraine Football Club | Coleraine | A rating |
| Coleridge (U.K) Ltd | Birmingham | A rating |
| COLESCO CAPITAL LTD | London | A rating |
| Coleshill Road Post Office | Atherstone | A rating |
| COLESSIA PAPER LIMITED | LONDON | A rating |
| Colet Systems Ltd | London | A rating |
| Colfe's School | Lee | A rating |
| ColganBauer UK Limited | London | A rating |
| Colgate-Palmolive (UK) Ltd | Woking | A rating |
| Colham Manor Primary School | Uxbridge | A rating |
| Colian UK Limited | Bristol | A rating |
| Coliance Ltd | Ashover | A rating |
| COLIBRIX LIMITED | London | A rating |
| Colin Bibra Estate Agents Ltd | Ealing | A rating |
| Colin Ingram Ltd | London | A rating |
| COLIN LIMITED | London | A rating |
| Colin Toms & Partners LLP | Sevenoaks | A rating |
| Colindale Dental | London | A rating |
| COLINDALE JEWELLERS | London | A rating |
| COLINDALE LOCAL LTD | London | A rating |
| Colindale Medical Centre LP | London | A rating |
| Colindale Superstore LTD | London | A rating |
| Collabora Limited | Cambridge | A rating |
| COLLABORATION BETTERS THE WORLD UK LIMITED | London | A rating |
| Collaboration Betters the World UK Ltd | London | A rating |
| COLLABORATIVE CARE SERVICES LTD | Swindon | A rating |
| COLLABORATIVE CARE SOLUTIONS LIMITED | Slough | A rating |
| Collaborative Conveyancing Limited | Nantwich | A rating |
| Collaborative Health Care Ltd | Burnham | A rating |
| Collaborative Software Limited T/A Admit One | Wareham | A rating |
| Collaborative Solutions Europe Limited | London | A rating |
| Collabro Ltd | Aberdeen | A rating |
| Collage Boy Art Ltd | London | A rating |
| COLLECSO LTD | Manchester | A rating |
| Collecting Cars Limited | London | A rating |
| COLLECTION-CONSULTING LIMITED | London | A rating |
| Collective Actions Limited | Chandler's Ford | A rating |
| Collective Architecture | Glasgow | A rating |
| Collective Equity Ownership Limited | London | A rating |
| Collective IQ Group Ltd | London | A rating |
| Collective property Co | Liverpool | A rating |
| Collective Risk Services CIC | London | A rating |
| Collective Society Ltd | London | A rating |
| Collective Vision Trust | Newcastle | A rating |
| COLLEGE FOR INTERNATIONAL COOPERATION AND DEVELOPMENT | Winestead | A rating |
| College Francais Bilingue de Londres Ltd | London | A rating |
| College Health Ltd | Grays | A rating |
| College of Dentistry Limited | Birmingham | A rating |
| COLLEGE OF I.T & ECOMMERCE LTD | Hainault | A rating |
| COLLEGE OF LONDON LIMITED | London | A rating |
| College of Optometrists | London | A rating |
| College Road Dental Practice | Birmingham | A rating |
| College Street Post Office | Merseyside | A rating |
| College Surgery Partnership | Cullompton | A rating |
| Collegeland Nursing Home | Dungannon | A rating |
| Collegiate Medical Centre | Manchester | A rating |
| Coller Capital Ltd | London | A rating |
| Coller Holdings Limited | London | A rating |
| Collett Holdings Limited | HALIFAX | A rating |
| Colley News & Booze | Sheffield | A rating |
| Collibra UK Ltd | London | A rating |
| Collier Contracts Limited | South Croydon | A rating |
| Collier Reading Architects | Wells | A rating |
| Colliers Hotel | London | A rating |
| Colliers International Property Consultants Limited | London | A rating |
| Colliery Court Medical Group | Boldon Colliery | A rating |
| Collingham and District Cricket Club | Newark | A rating |
| Collingswood Care Limited | Plymouth | A rating |
| COLLINGTON CAPITAL PARTNERS LLP | London | A rating |
| Collingwood College | Camberley | A rating |
| Collingwood Court Care Home | London | A rating |
| Collingwood Surgery | North Shields | A rating |
| Collins Botiuk | London | A rating |
| Collins Construction Limited | Croydon | A rating |
| Collins Cross Ltd | London | A rating |
| Collins Earthworks Ltd | Ripley | A rating |
| Collins River Enterprises Limited | London | A rating |
| Collins TechSpace Limited | Greater London | A rating |
| COLLINSHALLGREEN LIMITED | Nottingham | A rating |
| Collinson Care Ltd | Harrow | A rating |
| COLLINSON GRANT LIMITED | Manchester | A rating |
| Colloids Limited | Kirkby | A rating |
| COLLT LIMITED | London | A rating |
| Collydean Local Top Shop | Glenrothes | A rating |
| Collyer Bristow LLP | London | A rating |
| COLLYERS TMA LIMITED | Buckinghamshire | A rating |
| Colmers School and Sixth Form | Birmingham | A rating |
| Colnaghi UK Limited | London | A rating |
| COLNE CONVENIENCE STORE LTD | Manchester | A rating |
| COLNE CRICKET CLUB | COLNE | A rating |
| Colne Medical Centre | Colchester | A rating |
| COLOMBO 16 LTD | Hastings | A rating |
| Colombo 7 Cinnamon Gardens Ltd T/A Colombo 7 | Amersham | A rating |
| Colomer Munmany Europe Company Limited | Dalton | A rating |
| COLONEL'S PROPERTIES & DEVELOPMENTS LIMITED | Romford | A rating |
| Colonial Rock Limited | Hailsham | A rating |
| Coloplast Limited | Peterborough | A rating |
| Colorcon Limited | Dartford | A rating |
| Colorido Studios LTD | Twickenham | A rating |
| Colorifix Ltd | Norwich | A rating |
| Colorite Europe Ltd | Belfast | A rating |
| Colorminium (London) Limited | Chelmsford | A rating |
| ColorTokens UK Limited | London | A rating |
| Colorway Graphics UK Limited | Birmingham | A rating |
| Colosseum Dental UK Ltd | Crawley | A rating |
| COLOSSEUM FRIED CHICKEN & PIZZA LTD | Atherton | A rating |
| Colossus Construction Ltd | HERTFORDSHIRE | A rating |
| Colossyan Ltd | London | A rating |
| COLOUR CHEM UK LIMITED | London | A rating |
| Colour Luxe London | London | A rating |
| Colour One Ltd | London | A rating |
| COLOUR OPTIC LTD | DONCASTER | A rating |
| Colour Schemers Bodyworks t/a ID Autospray Limited | Southall | A rating |
| Colour Sound Experiment Ltd | London | A rating |
| Colour Tone Masterbatch Ltd | Caerphilly | A rating |
| Colour urban design limited | Newcastle-upon-Tyne | A rating |
| Colourbox Childcare Nursery Limited | London | A rating |
| Colourbox Montessori School Limited | Bury St. Edmunds | A rating |
| Colourcraft (Colours & Adhesives) Limited | Sheffield | A rating |
| COLOURFUL LILIES LTD | London | A rating |
| COLOURMATCH DECORATOR CENTRE LIMITED | London | A rating |
| Colours & Pixels Ltd | Reading | A rating |
| COLOURS FOODS LIMITED T/A FERNANDOS GRILL | WORTHING | A rating |
| Colours of Arley Ltd | London | A rating |
| Colours of Spices Ltd T/A India Zones | Dursley | A rating |
| Colours Photography | Leicester | A rating |
| Coloursonic Ltd | Maida Vale | A rating |
| Colt Group Limited | Petersfield | A rating |
| Colt Precision Ltd | tewkesbury | A rating |
| Colt Technology Services Group Limited | London | A rating |
| Colten Care Limited | Ringwood | A rating |
| Coltishall Medical Practice | Norwich | A rating |
| Coltraco Limited | Radstock | A rating |
| COLTS CRICKET COMPANY LIMITED | London | A rating |
| Columba Health Care Services Ltd | Saltash | A rating |
| Columbia Cruise Services UK Ltd | Southampton | A rating |
| Columbia Lake Partners Manager, LLP | London | A rating |
| Columbia Pictures Corporation Limited | London | A rating |
| Columbia Shipmanagement (UK) Ltd | London | A rating |
| Columbus Forty Five Limited T/A Vitality Consulting South West | Stockbridge | A rating |
| Columbus Forty Ltd | Surrey | A rating |
| Columbus Global UK Ltd | Nottingham | A rating |
| Columbus Innovations Limited | Glasgow | A rating |
| Column5 Consulting UK, Ltd. | Birmingham | A rating |
| Columna Capital LLP | London | A rating |
| Colville Care Ltd | Ryde | A rating |
| Colville Primary School | London | A rating |
| Colvincare Limited T/A Home Instead East Hampshire and Midhurst | Alton | A rating |
| Colvir Software Solutions Ltd | London | A rating |
| Colwall Surgery | colwall | A rating |
| Colwick Ltd | Langer | A rating |
| Colwyn bay cricket club | Colwyn bay | A rating |
| Colwyn Bay Old Convent Nursing Home Ltd | Colwyn Bay | A rating |
| COLWYNBAY HEALTHY BITES,TA Subway | COLWYN BAY | A rating |
| Colyton Grammar School | Colyton | A rating |
| Com Safer Care LTD | Romford | A rating |
| Com-Centre (UK) Ltd | London | A rating |
| Com. U. L. Limited trading as Commercials Unlimited | London | A rating |
| Coman And Co Ltd | London | A rating |
| ComAp Control Limited | Oldbury | A rating |
| Comarch UK LTD | London | A rating |
| Comau U.K. Limited | Rugby | A rating |
| Combat Medical Limited | St. Albans | A rating |
| Combe Coastal Practice | Ilfracombe | A rating |
| Combe Domiciliary Care Limited | Dalston | A rating |
| Comber Tandoori Ltd | Newtownards | A rating |
| Comberton and Eversden Surgeries | Cambridge | A rating |
| COMBI CONSTRUCTION & PROPERTIES LTD | BIRMINGHAM | A rating |
| Combine AI Limited | Guildford | A rating |
| Combined Community Housing C.I.C. | DERBY | A rating |
| Combined Services (GB) Limited | Buckinghamshire | A rating |
| COMBINICO. LTD | St Andrews | A rating |
| Comboni Missionary Sisters CIO | Birmingham | A rating |
| Comcarde Ltd (Trading as BR-DGE) | Edinburgh | A rating |
| Comco Group Uk Ltd | Leicester | A rating |
| Comdata Group UK | Ringwood | A rating |
| Come a Casa Mediterranean Ltd | Kent | A rating |
| Come Back Club Ltd | London | A rating |
| Come Learn Forex Ltd | London | A rating |
| Come On London Ltd | Greater London | A rating |
| Comebounty Ltd | Surrey | A rating |
| Comeca UK Limited | Burslem | A rating |
| Comech Metrology Limited | Derby | A rating |
| comedic Ltd | mitcham | A rating |
| COMELIT PAC LIMITED | Luton | A rating |
| COMERCIAL INVESTMENT OF UK LIMITED | London | UK Expansion Worker: Provisional |
| COMET UNIVERSE LTD | Richmond Upon Thames | A rating |
| Comex 2000 (UK) Ltd | Derby | A rating |
| COMFICARS UK LIMITED TA COMFICARS | Reading | A rating |
| COMFIESTYLE LIMITED | Manchester | A rating |
| COMFORT ANGELZ LIMITED | LONDON | A rating |
| Comfort Being Limited | Congleton | A rating |
| Comfort Call LTD | South Yorkshire | A rating |