| CM KARE LTD TA Compton Manor | Coventry | A rating |
| CM Kilburn Ltd T/A CheatMeals | London | A rating |
| CM Restaurant Ltd | London | A rating |
| CM School London Limited | Blandford Forum | A rating |
| CM SECURITY SERVICES LIMITED | Cardiff | A rating |
| CM SUPPORTED LIVING SERVICES | SOUTHAMPTON | A rating |
| CM TELECOM UK LTD | Tonbridge | A rating |
| CM TELECOM UK LTD | London | A rating |
| CMA CGM (UK) Shipping Limited | Liverpool | A rating |
| CMAP Services Ltd | Feltham | A rating |
| CMAS EUROPE LIMITED | SUTTON | A rating |
| CMASS Ltd | Mallusk | A rating |
| CMC (N.I) Ltd | Draperstown | A rating |
| CMC Marine Ltd | Poolle | A rating |
| CMC Markets UK Plc | London | A rating |
| CMC Pensarn Harbour | Llanbedr | A rating |
| CMCA Integrated Systems Limited | Crook | A rating |
| CMD bespoke ltd | London | A rating |
| CME ARTIST SERVICES LIMITED | LANCASTER | A rating |
| CME Congresses Limited | London | A rating |
| CMF LTD | MIDDLESEX | A rating |
| CMG (EUROPE) LTD | WALLINGFORD | A rating |
| CMG ACCOUNTANTS | BRADFORD | A rating |
| CMJ UK | Farnsfield | A rating |
| CMJSD Care Ltd | Holmfirth | A rating |
| CMK SUPERSTORES LIMITED | Wolverhampton | A rating |
| CML CARGO LIMITED | Edmonton | A rating |
| CML Microsystems Plc | Maldon | A rating |
| CML STEEL LIMITED | Edmonton | A rating |
| CML TRADE LTD T/A THARA HALAL MEAT | BUCKINGHAMSHIRE | A rating |
| CMM Constructions Ltd | Southall | A rating |
| CMM Medical Centers & Rehabilitation, Ltd | Brentford | A rating |
| CMN ASSOCIATES LIMITED | Wembley | A rating |
| CMOC UK Limited | London | A rating |
| CMOstores.com | Plymouth | A rating |
| CMR CARE LIMITED | Ilford | A rating |
| CMR Surgical Ltd | Cambridge | A rating |
| CMR UK Ltd | Wallsend | A rating |
| CMS Cameron Mckenna Nabarro Olswang LLP | London | A rating |
| CMS Distribution Limited | London | A rating |
| CMSOFTECH LTD | London | A rating |
| CMT CONSTRUCTION MATERIAL TRADING LTD | London | A rating |
| CMT Design & Construction Ltd | London | A rating |
| CMT Engineering Limited | Cradley Heath | A rating |
| CMT Equipment Ltd | Dartford | A rating |
| CMUK Construction Ltd | Birmingham | A rating |
| CN Bio Innovations Limited | Cambridge | A rating |
| CN Consulting Ltd | London | A rating |
| CN CONVENIENCE STORE LTD | Cannock | A rating |
| CN ROCK INVESTMENTS LTD | Peterborough | A rating |
| CN Seeds Ltd | Ely | A rating |
| CNA CONSTRUCTION & ENGINEERING LTD | Sittingbourne | A rating |
| CNA Insurance Company Limited | London | A rating |
| CNBC (UK) Limited | London | A rating |
| CNBLINK Limited | Hounslow | A rating |
| CNC - Communications & Network Consulting Limited | London | A rating |
| CNC Leicester Limited | Leicester | A rating |
| CND RICHMOND LIMITED | London | A rating |
| CND UNIVERSAL LIMITED | London | A rating |
| CNDA Pay Limited | London | A rating |
| CNERGY LIMITED | Preston | A rating |
| CNG FAST FOOD LTD | SURREY | A rating |
| CNG Fuels Ltd | London | A rating |
| CNG Fuels Ltd | Wokingham | A rating |
| CNH INDUSTRIAL N.V. | Basildon | A rating |
| CNI NEWS NETWORK LTD | Birmingham | A rating |
| CNIguard Ltd | Stanmore | A rating |
| CNJ CONVENIENCE STORE | Peckham | A rating |
| CNL | Nottingham | A rating |
| CNM Accountancy | Thornton Heath | A rating |
| CNM The College of Naturopathic Medicine | East Grinstead | A rating |
| CNM The College of Naturopathic Medicine Limited | East Grinstead | A rating |
| CNOOC Petroleum Europe Limited | Uxbridge | A rating |
| CNOOC U.K. Marketing Limited | London | A rating |
| CNPC EUROPE AND NORTH AMERICA LIMITED | London | A rating |
| CNR International (UK) Limited | Aberdeen | A rating |
| CNR PVT LTD | Pontefract, | A rating |
| CNU BARBERS LTD | Barking | A rating |
| Cnuic Technologies Limited | Currie | A rating |
| CNW Capital Service Ltd | London | A rating |
| CNX Therapeutics Limited | London | A rating |
| CNZ LIMITED TA Stevenston Post Office | stevenston | A rating |
| CO INTERNATIONAL LTD | Manchester | A rating |
| Co Lab Engineering Limited | Whitehaven | A rating |
| Co London United Ltd | London | A rating |
| Co Net Zone Ltd | London | A rating |
| CO SUSHI LIMITED T/A COISHI RESTAURANT | Southampton | A rating |
| Co-Accounting South London Ltd | London | A rating |
| Co-cubed Limited | Oxford | A rating |
| CO-ENTRY SOLUTIONS LTD | Coventry | A rating |
| Co-Labs Global Group Ltd | London | A rating |
| Co-Mission Initiative Trust | London | A rating |
| Co-operation Ireland | Belfast | A rating |
| Co-operative Group Limited | Manchester | A rating |
| CO.35 LIMITED | London | A rating |
| Co2balance UK Limited | Taunton | A rating |
| CO2OLTEC COMMERCIAL REFRIGERATION UK LIMITED | Abingdon | A rating |
| CO2Volt | Liverpool | A rating |
| Coach Academy Ltd | Lower Dicker | A rating |
| Coach House Dental Care | Wrexham | A rating |
| Coach Stores Limited | LONDON | A rating |
| CoachHub Ltd | Uxbridge | A rating |
| Coaching Culture Ltd | Lymm | A rating |
| Coaching for Christ Ltd. | 122 Broughshane Street | A rating |
| Coadjute Limited | London | A rating |
| Coal and Diamond ltd trading as: Eirlys Dental Practice | Dolgellau | A rating |
| Coal Aston Cricket Club | Dronfield | A rating |
| Coalfire Systems Limited | Manchester | A rating |
| Coalition Brewing Company Ltd | Purley | A rating |
| Coalition Development Ltd | London | A rating |
| Coalition for Epidemic Preparedness Innovations UK Limited | London | A rating |
| Coalition Risk Solutions Ltd. | London | A rating |
| Coalway News & Booze | Wolverhampton | A rating |
| Coast Capital UK Management LLP | London | A rating |
| Coast Care Homes Ltd | St. Leonards-On-Sea | A rating |
| Coast Renewable Services | Dundee | A rating |
| Coastal Academies Trust | Westgate | A rating |
| Coastal Accessories Ltd | BOURNEMOUTH | A rating |
| COASTAL CATERING UK LIMITED | WEST SUSSEX | A rating |
| Coastal Dental Laboratory | Truro | A rating |
| Coastal Home Care (Hove) Ltd | Hove | A rating |
| Coastal Homecare (Hove) Limited | Waterlooville | A rating |
| Coastal Homecare Ltd | Kinmel Bay | A rating |
| Coastal Medical Partnership | New Milton | A rating |
| Coastal Supported Living C.I.C | Hornchurch | A rating |
| Coastal Vets limited | Kings Lynn | A rating |
| Coastlands | Barry | A rating |
| Coastline Vineyard Church | Bournemouth | A rating |
| COATDYKE LIMITED | Coatbridge | A rating |
| Coate Water Care (Church View Nursing Home) Ltd | Swindon | A rating |
| Coates and Seely | Whitchurch | A rating |
| Coates Way Junior Mixed Infants and Nursery School | Watford | A rating |
| COATS LIMITED | London | A rating |
| Coatsink Software Ltd | Gateshead | A rating |
| Coatue Europe Limited | London | A rating |
| COBA Holdings Limited | Fleckney | A rating |
| COBA International Ltd | Leicester | A rating |
| Coba Resourcing Ltd | Northampton | A rating |
| COBALT ALUMINIUM LIMITED | CROYDON | A rating |
| Cobalt Consulting (UK) Ltd | London | A rating |
| Cobalt Energy Limited | Buxton | A rating |
| Cobalt Labs UK Limited | Hammersmith, London | A rating |
| Cobalt Search Limited | Hertfordshire | A rating |
| Cobana Energy Ltd | London | A rating |
| Cobb Europe Ltd | Colchester | A rating |
| Cobb Farming Limited | Dorchester | A rating |
| Cobble Lane Cured Ltd | Bicester | A rating |
| Cobbs Farm Co | Hungerford | A rating |
| Cobev Limited | Manchester | A rating |
| Cobham Care Limited | Oxshott | A rating |
| Cobham Dental Limited | Cobham | A rating |
| Cobham Free School | Cobham | A rating |
| Cobham Montessori School | Cobham | A rating |
| COBHAM STORE LIMITED TRADING AS COBHAM STORE | MITCHAM | A rating |
| Cobmore Holdings Ltd | Wilmslow | A rating |
| COBNUT TREE LIMITED/ THE QUILLS | ROCHESTER | A rating |
| Cobo Tankers Limited | Leeds | A rating |
| COBRA KNITWEAR LTD | Oldham | A rating |
| Cobra Resources PLC | London | A rating |
| Cobra Textiles Ltd | Oldham | A rating |
| Cobrest Limited T/A H Lloyds Chemist | London | A rating |
| Cobry Ltd | Glasgow | A rating |
| Coburn& Baker Limited | Brighton | A rating |
| Cobwebb Communications Ltd | Tonbridge | A rating |
| COCA-COLA EUROPACIFIC PARTNERS HOLDINGS GREAT BRITIAN LIMITED | Middlesex | A rating |
| Coca-Cola HBC NI Ltd | Lisburn | A rating |
| Cocentric | London | A rating |
| COCHIN PALACE LTD | DUNSTABLE ROAD | A rating |
| Cochin Spice Garden Ltd | Mid Glamorgan | A rating |
| Cochlear Europe Limited | Addlestone | A rating |
| Cochran Ltd | Annan | A rating |
| Cochrane | London | A rating |
| COCKBURN MULTI ACADEMY TRUST | Leeds | A rating |
| Cockburn Vets Limited | Coalville | A rating |
| Cockermouth Cricket Club | Cockermouth | A rating |
| Cockett Marine Oil Limited | 9 Tanner Street | A rating |
| Cockpit Hotel (London) Limited | London | A rating |
| COCKRAMS TRANSPORT (LINCS) LIMITED | SPALDING | A rating |
| Cockroach Labs UK Limited | London | A rating |
| Cockshott Lane Stores ltd | Leeds | A rating |
| Cocktail Machine UK Ltd | London | A rating |
| COCKTON HILL LIMITED | Newcastle upon Tyne | A rating |
| COCO & RUM LTD T/A COCO & RUM | Saltburn By The Sea | A rating |
| COCO AND NUT COFFEE LONDON LTD | SOUTH CROYDON | A rating |
| COCO Chocolatier | South Queensferry | A rating |
| Coco Crumbs LTD T/As Les Filles Cafe | London | A rating |
| COCO Dental Limited | London | A rating |
| COCO INTERNATIONAL RETAIL LIMITED | London | A rating |
| Coco Labelle Ltd | Bracknell | A rating |
| Coco Leisure Limited T/A Moka Dining | Northwood | A rating |
| COCO MOBILE LIMITED | Bristol | A rating |
| CoCo Nails Bar | Rayleigh | A rating |
| COCO RETRO LIMITED | Tunbridge Wells | A rating |
| Coco Retro Ltd | Tunbridge Wells | A rating |
| COCO WEMBLEY HAIR AND BEAUTY LIMITED T/A COCO WEMBLEY HAIR & BEAUTY | WEMBLEY | A rating |
| Coco's Nail Bar | Oxford | A rating |
| Cocoa Oriental Network UK Limited | London | A rating |
| Cocoa Vanille Ltd | Dagenham | A rating |
| COCOBA LIMITED | Knights Road,Strood | A rating |
| Cococure Minories Ltd | London | A rating |