| CERT'N'FASE LIMITED | Southam | A rating |
| Certa Insurance Partners Ltd | London | A rating |
| Certags Limited | Manchester | A rating |
| CERTAINLY MANAGEMENT & CONSULTANCY LTD | London | A rating |
| Certara UK Limited | Sheffield | A rating |
| Certas Energy UK Limited | Warrington | A rating |
| CERTAX ACCOUNTING BRISTOL LIMITED | Bristol | A rating |
| CERTAX ACCOUNTING EAST KENT LIMITED | Margate | A rating |
| CERTEK GROUP MANAGEMENT LIMITED | London | A rating |
| CERTIFIED BUSINESS SOLUTIONS UK LTD | ENGLAND | A rating |
| Certified Collectibles Group - International UK Limited | London | A rating |
| Certified Healthcare Solutions Limited | Hornchurch | A rating |
| CERTINIA UK LIMITED | Harrogate | A rating |
| Certis | Huddersfield | A rating |
| Certo ConstructionLtd | London | A rating |
| CERTORA SMART CONTRACTS UK LTD. | London | A rating |
| Certs Assured Technology Limited | Letchworth | A rating |
| Certua Group Limited | Harrow | A rating |
| Certus Construction Ltd | Chepstow | A rating |
| Certus Healthcare Limited | Bradford | A rating |
| Certuss (UK) Limited | Birmingham | A rating |
| Cerulli Associates Europe Ltd | London | A rating |
| Cervello Limited | London | A rating |
| CERVUS BIKE LIMITED | Smethwick | A rating |
| CES ADVANCED COMPOSITES UK LTD | Coventry | A rating |
| CES COMMUNICATIONS LTD | London | A rating |
| CES Power International Limited | Cloberfield | A rating |
| Cesan Ltd | Dagenham | A rating |
| CESTRIA HEALTH CENTRE | CHESTER LE STREET | A rating |
| CET-C FOR WOMEN | KENT | A rating |
| Ceta Insurance Limited | Chipping Norton | A rating |
| CETCO Energy Services Limited | London | A rating |
| CETGUL LTD T/a Array Garden | Romford | A rating |
| Cetix Ltd | Rotherham | A rating |
| Ceto AI Limited | Newcastle | A rating |
| CETRA Housing Co-operative Limited | London | A rating |
| Ceva Animal Health Limited | Wooburn Green | A rating |
| Ceva Logistics Limited | Ashby-de-la-Zouch | A rating |
| Cevitr Limited | Macclesfield | A rating |
| CEW Communications Ltd | Hindhead | A rating |
| CEWE Limited | Warwick | A rating |
| CEX.IO Ltd | London | A rating |
| CEXAL LTD | Edinburgh | A rating |
| CEYHAN RECOVERY (UK) LIMITED | Enfield | A rating |
| CEYLEX UK PVT LTD | High Wycombe | A rating |
| CEYLO IT SOLUTIONS LTD | London | A rating |
| CEYLON & BEYOND CATERING LTD | Bristol | A rating |
| Ceylon 1 Limited | London | A rating |
| CEYLON BAKE HOUSE LTD | Feltham | A rating |
| Ceylon Dosa Ltd | Aylesbury | A rating |
| Ceylon Express Company Limited | London | A rating |
| CEYLON SAMAYAL LTD | HARROW | A rating |
| CEYLON SILKS LTD t/a CEYLON SILKS | Surbiton | A rating |
| CEYLON TEA SHOP (UK) LTD | SHEFFIELD | UK Expansion Worker: Provisional |
| Ceylon Tea Specialists Ltd | London | A rating |
| Cezanne HR Limited | London | A rating |
| CF Fertilisers UK Limited | Chester | A rating |
| CF Private Equity U.K. Limited | London | A rating |
| CF Psychology Group Limited | London | A rating |
| CFA Accountants Ltd | Stockport | A rating |
| CFA Archaeology Ltd | Leeds | A rating |
| CFA Institute | London | A rating |
| CFA Society of the UK | London | A rating |
| CFB (MIDLANDS) LTD | Birmingham | A rating |
| CFC UNDERWRITING LIMITED | LONDON | A rating |
| CFCSL Ltd | Cramlington | A rating |
| CFGI (UK) Limited | London | A rating |
| CFH CAPITAL (UK) LIMITED | LONDON | A rating |
| CFM (UK) Limited | Nottingham | A rating |
| CFM CONNECT UK LLP | London | A rating |
| CFMS Services Limited | Bristol | A rating |
| CFN Packaging Group Ltd | Skegness | A rating |
| CFO ADVISORY SERVICES LTD | London | A rating |
| CFO NEXUS LTD | London | A rating |
| CFO Solutions Group Ltd | Maidstone | A rating |
| CFO360 Advisors Ltd | London | A rating |
| CFOR | London | A rating |
| CFP Energy (UK) Limited | London | A rating |
| CFS AEROPRODUCTS LTD | WARWICK | A rating |
| CFS CHESTERTON FOOD SUPPLIES | London | A rating |
| CFS of Leicester Ltd | Leicester | A rating |
| CFT Care Limited | Clacton-on-Sea | A rating |
| CFX LONDON LIMITED | ESSEX | A rating |
| CG Evolution Auto Ltd | Brighton | A rating |
| CG Global Products Ltd t/a Club Green | Woking | A rating |
| CG GRILL LTD | Rochdale | A rating |
| CG Partnership | Southampton | A rating |
| CG Theron Construction Ltd | Cheltenham | A rating |
| CG TRADERS LTD T/A LONDIS | East Sussex | A rating |
| CGA Simulation Ltd | Liverpool | A rating |
| CGATE Logistics UK Ltd | Dartford | A rating |
| Cgate UK Limited | London | A rating |
| CGC LDN Limited | London | A rating |
| CGE Investments Limited | London | A rating |
| CGEUK LTD | Ashford | A rating |
| CGG Services (UK) Ltd | Crawley | A rating |
| CGI AXIS LTD | London | A rating |
| CGM UK Advisors Limited | London | A rating |
| CGMS LONDON LTD | London | A rating |
| CGMT LTD | Carmarthen | A rating |
| CGN Global Uranium Ltd. | Cambridge | A rating |
| CGR LONDON LTD | London | A rating |
| CGUNIT1 LIMITED t/a Buns & Buns | London | A rating |
| CH Carolina Herrera | London | A rating |
| Ch Saad Ltd T/A Premier Lyndhurst Store | Burnley | A rating |
| CH Supplies Ltd T/A Yorkshire Community Healthcare | Leeds | A rating |
| CH&KI HEALTHCARE LTD | Leeds | A rating |
| CH1 Foods Limited | Redditch | A rating |
| Cha Cha Chai | Manchester | A rating |
| CHA CHA CHAI OLDHAM LTD | Oldham | A rating |
| CHA SHA HOUNSLOW LTD T/A Phat Buns Hounslow | London | A rating |
| Chaai Leeds Ltd | Leeds | A rating |
| Chabad Lubavitch (Leeds) Limited | Leeds | A rating |
| Chabad Lubavitch UK | London | A rating |
| Chabad NE London and Essex | Gants Hill | A rating |
| Chaboba Limited | Wembley | A rating |
| Chace Community School | Enfield | A rating |
| Chacha Chai Holding LTD | Bradford | A rating |
| Chacha G Ltd T/A Lala Peshawari | Hounslow | A rating |
| CHACHA JEWELLERS (HALIFAX) LTD | Halifax | A rating |
| Chacha Jewellers (Oldham) Limited | Oldham | A rating |
| Chachas Roti Junction Ltd | Dudley | A rating |
| Chad Engineering UK Ltd | Windsor | A rating |
| Chaddenwych Services Limited | London | A rating |
| CHADDERTON HEALTHCARE LTD | Oldham | A rating |
| Chadni Pizza Express Ltd | Exeter | A rating |
| Chadsmoor Medical Practice | Cannock | A rating |
| CHADWELL FACILITIES MANAGEMENT LTD | London | A rating |
| Chadwick Practice | Hartlepool | A rating |
| Chadwick Textiles Ltd | Altrincham | A rating |
| Chadwicks of Bury Ltd | Bury | A rating |
| Chaganti Limited | Peterlee | A rating |
| Chahal Convenience Limited | Northwich | A rating |
| Chahal Drylining Ltd | Erith | A rating |
| Chahal Empire Limited | Uxbridge | A rating |
| Chahal Energy Ltd | Bolton | A rating |
| Chahal Energy Solutions Ltd | Bolton | A rating |
| CHAHAL TRANSPORT LIMITED | Derby | A rating |
| Chahana Limited | Grantham | A rating |
| Chai Chat Limited | West Bromwich | A rating |
| Chai Factory Four Limited | Leicester, | A rating |
| Chai Factory Ltd | Leicester | A rating |
| Chai Green | Birmingham | A rating |
| Chai Guys Ltd | London | A rating |
| Chai Heaven Limited | Eastleigh | A rating |
| Chai Wallahs Events Ltd | BRISTOL | A rating |
| Chai&curry Ltd | Manchester | A rating |
| Chaii Caffe LTD | Blackburn | A rating |
| Chaii Holdings Dalston Ltd | London | A rating |
| Chaii Khana Limited | Luton | A rating |
| CHAII LIMITED | Peterborough | A rating |
| Chaiibox Birmingham Ltd | Birmingham | A rating |
| Chaiiwala | London | A rating |
| Chailey Heritage Foundation | Lewes | A rating |
| CHAIN & CHAIN TECHNOLOGIES LIMITED | LONDON | A rating |
| CHAIN CAFE UK LTD | London | A rating |
| Chain IQ UK Limited | London | A rating |
| Chain Logistics Services Limited | London | A rating |
| Chain of Hope | London | A rating |
| Chainalysis UK Limited | London | A rating |
| Chainlink Labs Ltd | London | A rating |
| ChainThat Limited | London | A rating |
| Chaiwalla | London | A rating |
| Chaiyo Restaurants Limited | London | A rating |
| CHAK 69 DESSERTS LTD | BIRMINGHAM | A rating |
| CHAKRA CEM LTD | LONDON | A rating |
| CHAKRA HOLIDAYS & EVENTS LIMITED T/A CHAKRA HOLIDAYS | West Midlands | A rating |
| Chakra Psychics Ltd | Hampshire | A rating |
| Chakray UK Ltd | Warwick | A rating |
| Chaks | Newcastle upon Tyne | A rating |
| Chakwala Limited TA Akbar's Newcastle | Newcastle Upon Tyne | A rating |
| CHALCRAFT HALL LTD t/as Chalcraft Hall Care Home | Bognor Regis | A rating |
| Chalegrove Properties Limited | London | A rating |
| Chalfen of London | London | A rating |
| Chalfont Construction Limited | Gerrards Cross | A rating |
| CHALFONT TAXIS LIMITED | Amersham | A rating |
| Chalice Mead Limited | Evesham | A rating |
| Chalice Medical Limited | Nottinghamshire | A rating |
| Chalil's Retail UK Limited | Old Colwyn | A rating |
| Chalini Roger | Great Yarmouth | A rating |
| Chalk Restaurant Ltd | Wokingham | A rating |
| Chalk restaurants ltd | wokingham | A rating |
| Chalkie AI Ltd | Sheffield | A rating |
| Chalkland Vets Ltd | Chippenham | A rating |
| Chalknduster Tutors Limited | Hounslow | A rating |
| Challenge Group Brokers (UK) Ltd | London | A rating |
| Challenger Lighting Services Ltd | Gosport | A rating |
| Challenger Performance Optimization UK Limited | London | A rating |
| CHALLIS CONVENIENCE STORE | Braintree | A rating |
| Challoch Energy Limited | Pencoed | A rating |
| Challoch farm Ltd | Leswalt | A rating |
| Chalmers Church Edinburgh | Edinburgh | A rating |
| CHAMAN SWEETS AND BAKERS LTD | London | A rating |
| Chamanthi Ltd | Amersham | A rating |
| Chamarel Ltd | Stockport | A rating |
| Chamber Media Ltd | London | A rating |
| Chamber Orchestra of Europe | London | A rating |
| Chamberlain Europe UK | London | A rating |
| Chamberlaine Cleaning Services Ltd | London | A rating |
| Chamberlains Aqua and Energy Systems Limited | Southampton | A rating |