| Camphill Rudolf Steiner Schools Limited | Aberdeen | A rating |
| Camphill Rudolf Steiner Schools Ltd | Aberdeen | A rating |
| Camphill Shared Lives Communities Ltd. | Whitby | A rating |
| Campingland Surgery | Swaffham | A rating |
| Campion Capital Limited | London | A rating |
| CAMPION GARDENS CARE HOME LIMITED | SWANSEA | A rating |
| CampStead Ltd | Belfast | A rating |
| Campus Health Centre | Hull | A rating |
| Campus Living Villages UK Ltd | Manchester | A rating |
| Camron Public Relations Limited | London | A rating |
| Camry Limited | Edinburgh | A rating |
| CAMS TRADING LIMITED | spalding | A rating |
| Camshine Limited | Cambridge | A rating |
| CAMSHINE MAINTENANCE LTD | Cambridge | A rating |
| Camshopping Limited | London | A rating |
| Camso UK Limited | Cowbridge | A rating |
| Camstone (Scotland) Limited | Edinburgh | A rating |
| Camtech Innovations Ltd | Oakington | A rating |
| Camvision Education Limited | London | A rating |
| Camworth Limited | Stonehouse | A rating |
| CAN Advertising Ltd | Windsor | A rating |
| CAN OFFSHORE LIMITED | ABERDEEN | A rating |
| CAN-SURVIVE UK | Manchester | A rating |
| CAN.BRISTOL LTD | Bristol | A rating |
| Canaan Care Limited | Croydon | A rating |
| Canaan Care Ltd | Croydon | A rating |
| CANAAN HEALTHCARE GROUP LIMITED | Fareham | A rating |
| Canaccord Genuity Limited | London | A rating |
| Canaccord Genuity Wealth Limited (Trading as Canaccord Wealth) | London | A rating |
| Canada Goose Services Limited | London | A rating |
| CANADA London Ltd | London | A rating |
| Canada Pension Plan Investment Board | London | A rating |
| Canadian Broadcasting Corporation | London | A rating |
| Canadian Imperial Bank of Commerce | London | A rating |
| Canadian Solar SSES (UK ) Ltd | London | A rating |
| CANADIAN SOLAR UK PROJECTS LTD | London | A rating |
| CANADIAN SPA COMPANY LTD | SALFORDS | A rating |
| Canaletto UK Ltd | London | A rating |
| Canalis Technology Limited | Stockport | A rating |
| Canalys Com Ltd | READING | A rating |
| Canapes Direct Ltd | Perivale | A rating |
| CANAPII LIMITED | Nottingham | A rating |
| Canara Bank | London | A rating |
| Canary Care Services Ltd | Reading | A rating |
| CANARY HOUSE CARE LIMITED | Westcliff-On-Sea | A rating |
| Canary Wharf College | London | A rating |
| Canary Wharf Group PLC | London | A rating |
| Canaryford Ltd | Benfleet | A rating |
| Canavan Joinery Services Ltd | Dungannon | A rating |
| CANBURY INSIGHTS LIMITED | London | A rating |
| Canbury Press Ltd | Kingston upon Thames | A rating |
| Cancer Care Diaspora | Manchester | A rating |
| Cancer Research UK | London | A rating |
| CANDARIN HOME LTD | LONDON | A rating |
| Candela Healthcare Ltd | Hereford | A rating |
| Candesic Ltd. | Huddersfield | A rating |
| Candex Solutions Limited | London | A rating |
| CANDEY | London | A rating |
| CANDEYPARKER LEGAL SERVICES LIMITED | London | A rating |
| Candid HealthSystems Consultants Limited | Watford | A rating |
| Candide Ltd | Bristol | A rating |
| Candle Flame Care Ltd | Bristol | A rating |
| CANDLEFOX LIMITED | London | A rating |
| Candlelight Homecare Services Limited | Glastonbury | A rating |
| CANDLES AND OUD LTD | London, | A rating |
| CanDo Laundry Services | Port Talbot | A rating |
| Cando Personnel LTD | Gravesend | A rating |
| Cando Projects Limited | London | A rating |
| Candoco Dance Company | London | A rating |
| Candosa Ltd | London | A rating |
| Candour Care Group | Newton Le Willows | A rating |
| Candour Care Services (Broadview) Ltd | Welwyn | A rating |
| Candour Care Services (Homeside) Ltd | Welwyn | A rating |
| Candour Care Services Hillcrest Ltd | Welwyn | A rating |
| Candriam Luxembourg - UK Establishment | London | A rating |
| Candu Labs Limited | London | A rating |
| Candy & Candy Ltd | London | A rating |
| CANDY DELICIOUS LIMITED | London | A rating |
| CANDY EXPERT UK LTD | Birmingham | A rating |
| Candy Floss Creperie | London | A rating |
| CANDY KOMPANY LTD | Leytonstone | A rating |
| CANDY STORE EXPRESS LTD | ORPINGTON | A rating |
| CANDYLAND FULHAM LTD | Huddersfield | A rating |
| Candyland Nails & Beauty Limited | Cardiff | A rating |
| Candyspace Media Limited | London | A rating |
| Cane Hospitality Ltd | Kippen | A rating |
| Canela Collective Ltd | Farnborough | A rating |
| CANFIELDS ESTATES (NORTH WEST LONDON) LIMITED | London | A rating |
| Canfields Estates Newbury Park Ltd | Poole | A rating |
| Canford School | Wimborne | A rating |
| Cangaf Limited | Bolton | A rating |
| Canham Consulting Ltd | Norwich | A rating |
| CANIM FRUIT & VEG LIMITED | LEYTON | A rating |
| CANKLOW PREMIER | ROTHERHAM | A rating |
| CANKO CONSULTANCY LTD | NEWCASTLE | A rating |
| Canmoor Asset Management Ltd | London | A rating |
| Canmoor Projects Limited | London | A rating |
| Canmore Dental Practice | Lochgelly | A rating |
| Canmore1947 Ltd | Dunfermline | A rating |
| Canna Care Pharma Limited | Kent | A rating |
| Cannelle Medispa | OXFORD | A rating |
| Canning Ltd | Nottingham | A rating |
| Cannington Health Centre | Bridgwater | A rating |
| Cannock Chase and South Staffordshire Care 28 Limited | Cannock | A rating |
| Cannock Chase District Council | Cannock | A rating |
| Cannock Coventry Hotel No.1 LLP | Coventry | A rating |
| Cannock Cricket Club | Hednesford | A rating |
| CANNOCK GATES LIMITED | CANNOCK | A rating |
| Cannon Children Services Ltd | Canterbury | A rating |
| Cannon Corporate Limited | London | A rating |
| Cannon Mini Market Ltd | Middlesex | A rating |
| CANNON TANDOORI | MIDDLESES | A rating |
| Canolfan Iechyd Amlwch | Amlwch | A rating |
| Canon (UK) Ltd | Hayes | A rating |
| Canon Europe Limited | Uxbridge | A rating |
| Canon Medical Research Europe Ltd | Edinburgh | A rating |
| Canonesses of St Augustine | Allithwaite, GRANGE-OVER-SANDS | A rating |
| Canonical UK Limited | London | A rating |
| Canons High School | Edgware | A rating |
| CANONS PHARMACY LTD | LONDON | A rating |
| Canopius Services Limited | London | A rating |
| Canopy Education CIC | London | A rating |
| Canopy Group Limited | London | A rating |
| Canopy Life Sciences ltd | Chesham | A rating |
| Canopy Media Management | London | A rating |
| Canopy Technologies Ltd | Hamble | A rating |
| CANPACK UK Limited | Scunthorpe | A rating |
| Cansford Laboratories Limited | Cardiff | A rating |
| Canson Limited | London | A rating |
| CANTAB RESEARCH LIMITED | Cambridge | A rating |
| Cantarus | Manchester | A rating |
| Canteen Asia Ltd T/A Candy Cafe | London | A rating |
| Canteen West Ltd | Bristol | A rating |
| CANTELL School | SOUTHAMPTON | A rating |
| Canterbury Bakery Ltd | Canterbury | A rating |
| Canterbury Care Homes Limited | Birmingham | A rating |
| Canterbury Cathedral | Canterbury | A rating |
| Canterbury Christ Church University | Canterbury | A rating |
| Canterbury Diocesan Board of Finance | Canterbury | A rating |
| Canterbury Medical Practice | Canterbury | A rating |
| Canterbury Tale Limited T/a Prince of India | Folkestone | A rating |
| Canterbury Theatre & Festival Trust | Canterbury | A rating |
| Cantifix Limited | London | A rating |
| Cantillon Capital Ltd | London | A rating |
| CANTILUPE SURGERY | Hereford | A rating |
| Cantinetta Antinori | London | A rating |
| CANTON DISCOUNT LIMITED | Canton | A rating |
| CANTON ELEMENT LIMITED | LONDON | A rating |
| Canton Mobiles Dealer limited | Cardiff | A rating |
| Cantor Set Ltd | Bristol | A rating |
| Cantourage Holdings Ltd | London | A rating |
| Cantronik Ltd TA Veethree Technologies | Poole | A rating |
| Canuck Capital Limited | London | A rating |
| CANVA UK OPERATIONS LIMITED | LONDON | A rating |
| Canvas (Birmingham) | Birmingham | A rating |
| Canvas Software Limited | London | A rating |
| Canvas8 Limited | London | A rating |
| CANVASBAY LIMITED | LONDON | A rating |
| Canverse Games Ltd | London | A rating |
| Canwick House Care Home Limited | Lincoln | A rating |
| CANWING LIMITED | BARKING | A rating |
| Canyon Capital Advisors (Europe) Ltd | London | A rating |
| CANZELYSH GLOBAL LTD | LONDON | A rating |
| Caonima Mandarin Ltd | London | A rating |
| CAP BLUE LTD | London | A rating |
| CAP CITY LIMITED, T/A Cap City Dental | London | A rating |
| Cap Clean Ltd | Woodford Green | A rating |
| Cap Coder Limited | Chalgrove | A rating |
| CAP Worldwide Limited | Richmond | A rating |
| Capaan Day Services | London | A rating |
| Capability Scotland | Edinburgh | A rating |
| Capacitas Ltd | London | A rating |
| Capacity Place Limited | London | A rating |
| Capchase UK Limited | London | A rating |
| Capdrill UK Limited | London | A rating |
| Cape Ann Asset Management Ltd | London | A rating |
| Cape Cornwall Club Ltd | Penzance | A rating |
| Cape Design and Build | London | A rating |
| CAPE HILL COSMETICS LTD | Birmingham | A rating |
| Cape Hill Medical Centre | Birmingham | A rating |
| Cape Medical Services Limited | Worcester | A rating |
| CAPE POINT SERVICES LTD | Smethwick | A rating |
| Capecom Ltd | London | A rating |
| CAPEESH LTD | LONDON | A rating |
| Capeesh ltd t/a Capeesh | London | A rating |
| Capehill Glamour Touch & Beauty Ltd | Birmingham | A rating |
| CAPEHOUSE LIMITED T/A JOMIDARCOTTAGE | Irchester | A rating |
| CAPEL HILL STORES LIMITED | Porth | A rating |
| CAPEL NEWS | IPSWICH | A rating |
| Capella Care Limited | Chilham | A rating |
| CAPELLA TOUR LTD | London | A rating |
| CAPERNAUM HEALTHCARE LTD | EDINBURGH | A rating |
| Capernaum Limited | Bedford | A rating |
| Capernwray Missionary Fellowship of Torchbearers | Carnforth | A rating |
| Capestone Organic Poultry Ltd | Haverfordwest | A rating |
| Capgemini UK PLC | London | A rating |
| Capi Money UK Ltd | London | A rating |
| CAPIENT UK LTD | London | UK Expansion Worker: Provisional |
| Capillary Technologies Europe Limited | Hammersmith | A rating |
| Capita Customer Management Limited | Leeds | A rating |