| COW PR LLP | London | A rating |
| COWAN BROS NI LTD | Londonderry | A rating |
| Cowan Consultancy Ltd | Fareham | A rating |
| Coward Pharmacy Limited | Barrow In Furness | A rating |
| Cowater UK Limited | London | A rating |
| Cowbell Cyber Ltd | London | A rating |
| Cowdenbeath Medical Practice | Cowdenbeath | A rating |
| Cowdrey Cricket Club | Tonbridge | A rating |
| Cowen International Limited | London | A rating |
| Cowgate Cricket Club | Newcastle upon Tyne | A rating |
| COWGILLS LIMITED | BOLTON | A rating |
| COWI UK Ltd | London | A rating |
| Cowley Specsavers Hearcare Limited | Oxford | A rating |
| Cowley, Knox & Guy | London | A rating |
| Cowry Consulting Limited | London | A rating |
| Cowslip Valley Farms Ltd | Ipswich | A rating |
| Cox Green School | Maidenhead | A rating |
| Cox Hinkins & Co Limited | Oxford | A rating |
| Cox Mountain Limited | Hunstanton | A rating |
| Cox Powertrain Limited | Shoreham By Sea | A rating |
| Cox Workshops Limited | London | A rating |
| Coxbury Limited | London | A rating |
| COXWELL HOMES LIMITED | EGHAM | A rating |
| Coya (Restaurant) Limited | London | A rating |
| Coya Angel Limited | London | A rating |
| Coyle Equipment Services Limited | London | A rating |
| Coyle Personnel Ltd | Harrow | A rating |
| Coyle Personnel LTD | London | A rating |
| COZA Global (UK) | London | A rating |
| COZEE CARE HOMES LTD T/A BARNSTON COURT CARE HOME | Wirral | A rating |
| Cozentus Technologies UK Limited | Harrow | A rating |
| Cozway Limited | Edgware | A rating |
| Cozy Camper Ltd | Glasgow | A rating |
| COZY CORP LIMITED | Gillingham | A rating |
| COZY HIVE LTD | London | A rating |
| Cozy Home Improvements Ltd | Datchet | A rating |
| Cozzio Limited t/a Roni's Restaurant | Bishop's Stortford | A rating |
| Cozzy Lounge Ltd | Wantage | A rating |
| CP Automation Ltd | Scunthorpe | A rating |
| CP Cases Limited | Isleworth | A rating |
| CP CONCEPT LTD | London | A rating |
| CP Foods UK Ltd | Malvern | A rating |
| CP Holdings LTD | Watford | A rating |
| CP HOMES AND PROJECTS LTD | England, | A rating |
| CP HQ Operations Ltd | Dewsbury | A rating |
| CP Pharma Ltd | London | A rating |
| CP Plus Ltd. T/A GroupNexus | London | A rating |
| CP TECH INTERNATIONAL LTD | Manchester | A rating |
| CP Training Solutions | Luton | A rating |
| CP12 Energy Ltd | Gateshead | A rating |
| CPA Australia Ltd | London | A rating |
| CPB Educational Services Ltd | London | A rating |
| CPC Consultancy Ltd | London | A rating |
| CPC Planning Consultants Limited | Southbourne | A rating |
| CPC Techno Solutions Limited | Birmingham | A rating |
| CPCS Transcom UK Ltd | London | A rating |
| CPD Powerline Ltd | Armagh | A rating |
| CPE Chelmsford Ltd | Chelmsford | A rating |
| CPF Limited | Dorridge | A rating |
| CPFC (Women) Limited | London | A rating |
| CPH INSIGHT LTD | Buckinghamshire | A rating |
| CPHK Limited | Chester | A rating |
| CPI CARD GROUP INTERNATIONAL LTD | London | A rating |
| CPI SERVICES (UK) LTD. | London | A rating |
| CPI TMD Technologies Ltd | Hayes | A rating |
| CPiO Limited | Solihull | A rating |
| CPL Aromas Ltd | Brixworth | A rating |
| CPL Audit Ltd T/A GKP Partnership | London | A rating |
| CPL Energy Consultant Ltd | Leicester | A rating |
| CPL Global Ltd | East Sussex | A rating |
| CPL Software Ltd | Glasgow | A rating |
| Cpl Talent Solutions Limited | Reading | A rating |
| CPM Partners Limited | Steyning | A rating |
| CPMG Architects Limited | Nottingham | A rating |
| CPN Partners Ltd. | Wellingborough | A rating |
| CPNW FOOD AND CATERING LTD | York | A rating |
| CPORT LTD T/A BLACK SHEEP COFFEE | Edinburgh | A rating |
| CPotential Trust | London | A rating |
| CPP FM & Projects Ltd | Sheffield | A rating |
| CPP Laguna Limited | Cardiff | A rating |
| CPPP UK LIMITED | LONDON | A rating |
| CPR Tokyo UK Ltd | Sevenoaks | A rating |
| CPRIME LIMITED | Kent | A rating |
| Cps Automotive Limited | Byfleet | A rating |
| CPS Building Services Ltd | Cambridge | A rating |
| CPT International (UK) Ltd | Birmingham | A rating |
| CPT Markets UK Limited | Canary Wharf | A rating |
| CPT Transport Ltd | Northampton | A rating |
| CPTL LTD | Worthing | A rating |
| CPX Constructions Ltd | London | A rating |
| CQ MED SPA | Manchester | A rating |
| CQC ACE LTD | Epsom | A rating |
| CQM FIFTH LTD | CROYDON | A rating |
| CQM Sixth Ltd | London | A rating |
| CQM Third Ltd | Bexleyheath | A rating |
| CQS (UK) LLP | London | A rating |
| CR Clean Limited | Slough | A rating |
| CR Construction (U.K.) Company Limited | London | A rating |
| CR EXPRESS LIMITED | Salford | A rating |
| CR INTERNATIONAL SRL | London | A rating |
| CR Investigations Ltd | London | A rating |
| CR SHAFTESBURY LTD | Dorset | A rating |
| CR SHAFTESBURY LTD T/A Chutney's Restaurant | Shaftesbury, England | A rating |
| CR Trades Ltd, T/A Misano's | Glasgow | A rating |
| CR WHITECHAPEL LTD | London | A rating |
| CR21 Ltd | Kent | A rating |
| CRA International (UK) Limited | London | A rating |
| CRABTREE INSULATION LIMITED | Gays | A rating |
| Crabtree t/as Crabtree Care Home | Ilkley | A rating |
| Crabwall Manor Hotel and Spa | Chester | A rating |
| CRACK DEAL LIMITED | Essex | A rating |
| Crackerjack Food & Wine | London | A rating |
| CRACKERJACK SOLUTIONS UK LIMITED | Ilford | A rating |
| Cracknell Limited | London | A rating |
| Craddy Pitchers Ltd | Bristol | A rating |
| Cradlepoint UK Ltd | London | A rating |
| Cradley Care Services Ltd | Brierley Hill | A rating |
| Cradley Express T/A Family Shopper | Cradlley Heath | A rating |
| Cradloop UK Ltd | Grantham | A rating |
| CRAEMER UK LIMITED | Telford | A rating |
| Craft and Jam Venues Limited | Shifnal | A rating |
| Craft Buddy Ltd | Chesham | A rating |
| Craft Franchise Ltd T/A Craft Burger | Hartlepool | A rating |
| Craft Link Ltd | London | A rating |
| Craft Machine Limited | London | A rating |
| Craft Minds Ltd | London | A rating |
| Craft Northern Ireland | Belfast | A rating |
| Craft Prospect Ltd | Glasgow | A rating |
| Craft Wardrobe Ltd | Hayes | A rating |
| CRAFT21 LIMITED | Essex | A rating |
| Craftastik Limited | Rainham | A rating |
| Craftco Ltd | Birmingham | A rating |
| Crafter Engineering Limited | Warrington | A rating |
| Crafters Global Ltd | London | A rating |
| CRAFTIFY TECH LTD | London | A rating |
| CRAFTY APES UK LIMITED | LONDON | A rating |
| CRAFTY F&B LIMITED | LEICESTER | A rating |
| CRAGIE SHOP LTD | Perth | A rating |
| Cragside Energy Limited | London | A rating |
| Cragwood International Limited | Windermere | A rating |
| Craig &Rose Ltd | London | A rating |
| Craig Donnelly Golf LTD | Kirkcaldy | A rating |
| Craig Green Limited | London | A rating |
| CRAIG HAMILTON ARCHITECTS LTD | POWYS | A rating |
| Craig International Limited | Aberdeen | A rating |
| Craig Lodge Trust | Dalmally | A rating |
| CRAIGANTLET FARMS LTD | Belfast | A rating |
| Craigarran Care Home With Nursing | Co. Durham | A rating |
| Craigdale Care Limited T/A The Old Vicarage Residential Home | Frampton-on-Severn | A rating |
| CRAIGEN UK LTD | London | A rating |
| Craigentinny Dental Care | EDINBURGH | A rating |
| Craighaven Limited | Leamington Spa | A rating |
| Craiglands Ltd | Ilkley | A rating |
| Craigley Farms Ltd | Castle Douglas | A rating |
| Craigmhor Lodge Hotel | Pitlochry | A rating |
| Craignair Care Ltd | Crosby | A rating |
| CRAIGNEUK RETAIL LTD t/a Shop Local | Wishaw | A rating |
| Crain Communications Limited | London | A rating |
| Craine Gardeners Ltd | London | A rating |
| CRAINIO LIMITED | London | A rating |
| Crake Asset Management LLP | London | A rating |
| Cramer & Bell LTD | London | A rating |
| CRAMLINGTON INDIAN RESTAURANT LIMITED | Cramlington | A rating |
| Cramlington Precision Forge Limited | Cramlington | A rating |
| Cramlington Specsavers Limited | Cramlington | A rating |
| Cramond Residence | Edinburgh | A rating |
| Cranage EMC Testing Limited | Market Drayton | A rating |
| Cranbrook Lettings Ltd | Ilford | A rating |
| Cranbrook School | Cranbrook | A rating |
| Crane Biosciences Ltd | London | A rating |
| Crane Electronics Ltd | Hinckley | A rating |
| Crane Limited | Ipswich | A rating |
| Crane Merchandising Systems Limited | Chippenham | A rating |
| Crane Plastics Ltd | Brixworth | A rating |
| Crane Venture Partners LLP | London | A rating |
| Crane Worldwide UK Ltd | London | A rating |
| Cranemere International Limited | London | A rating |
| Craneware Plc | Edinburgh | A rating |
| Cranfield Aerospace Solutions Limited | Bedford | A rating |
| Cranfield Management Development Ltd | Bedford | A rating |
| Cranfield University | Bedford | A rating |
| Cranfold Physical Therapy Centre Ltd | Cranleigh | A rating |
| Cranford Community College | Middlesex | A rating |
| CRANFORD MEDICAL CENTRE | CRANFORD | A rating |
| Cranford School | Wallingford | A rating |
| Crankhall Lane Dental Practice | wednesbury | A rating |
| Cranleigh Cricket Club | Cranleigh | A rating |
| Cranleigh Food & Wine Limited T/A Londis (Stratton Convenience Store) | Swindon | A rating |
| Cranleigh Practice Ltd | Cranleigh | A rating |
| Cranleigh Spice Limited | Cranleigh | A rating |
| Cranley Nurseries Limited | Edinburgh | A rating |
| Cranmead Limited | Hove | A rating |
| Cranmore Ale and Wine Ltd T/A Bernie's | Shirley | A rating |
| Cranswick PLC | Hessle | A rating |
| Cranven Group Ltd | London | A rating |
| Crapper and Sons Landfill Ltd | Swindon | A rating |
| Crash Damage Ltd T/A Fix Auto | Leicester | A rating |
| Crash Deals Ltd | Bolton | A rating |
| Crasna Foods Ltd | Carterton | A rating |
| Craster Ltd | London | A rating |