| Continuity Care Limited | Cheltenham | A rating |
| Continuity Healthcare Services Ltd | HINCKLEY | A rating |
| Continuity Logic (UK) Limited t/a CLDigital | London | A rating |
| Continuity2 Ltd | Glasgow | A rating |
| Continuous Group Limited | London | A rating |
| Continuous Intelligence Limited | London | A rating |
| CONTINUUM ADVISORY PARTNERS LIMITED | London | A rating |
| Continuum Health Limited | London | A rating |
| Continuum Healthcare Limited | Wanstead | A rating |
| Continuum Industries Ltd | Edinburgh | A rating |
| Contitech UK Ltd | Wigan | A rating |
| CONTOLLO GROUP LIMITED | Knutsford | A rating |
| Contour Technologies Limited | Gloucester | A rating |
| ContourGlobal Solutions (Northern Ireland) Limited | Lisburn | A rating |
| Contract & Construction Consultants (Southern) Limited | Bristod | A rating |
| Contract Embroidery LTD | Blackburn | A rating |
| Contracta Construction UK Limited | London | A rating |
| CONTRACTPOD TECHNOLOGIES LIMITED | LONDON | A rating |
| Contracts Support Services Limited | Braintree | A rating |
| Contractus Limited | Sawbridgeworth | A rating |
| Contrado Imaging Ltd | London | A rating |
| Contrarius Investment Advisory Limited | Windsor | A rating |
| Contrasol Ltd | St Albans | A rating |
| Contrast Publishing Ltd | London | A rating |
| Control 2K Limited | Bridgend | A rating |
| Control Distributed Trading Branch UK Ltd | Newcastle Upon Tyne | A rating |
| CONTROL DISTRIBUTED TRADING UK LTD | NEWCASTLE | A rating |
| Control Electrical Engineers Ltd | London | A rating |
| Control Flow Technologies Group Ltd | Sunderland | A rating |
| Control Freaks Ltd | Spalding | A rating |
| Control Now Ltd | London | A rating |
| Control Risks Group Limited | London | A rating |
| Control Systems International (UK) Limited | Chippenham | A rating |
| Control Techniques Dynamics Limited | Andover | A rating |
| Control Technologies UK Ltd | Sharnbrook | A rating |
| Control Towers International | Hounslow | A rating |
| Control vs Exposed UK Limited | London | A rating |
| ControlCase Limited | London | A rating |
| Controlled Events Limited | Loudwater | A rating |
| CONTROLO CARGO SERVICES LIMITED | REDDITCH | A rating |
| ControUK Limited | Richmond | A rating |
| Contxt Ltd | London | A rating |
| CONUNDRUM INDUSTRIAL LIMITED | CAMBRIDGE | A rating |
| ConvaTec Ltd | Deeside | A rating |
| Convelio LTD | London | A rating |
| Convene UK Holdings Limited | London | A rating |
| Convenience 365 Limited | Coatbridge | A rating |
| CONVENIENCE AT LOCAL LTD | slough | A rating |
| Convenience Corner Brighton Ltd T/A Convenience Corner | Brighton | A rating |
| Convenience First Express Limited | Orpington | A rating |
| Convenience Local Ltd | Edinburgh | A rating |
| Convenience Stop | London | A rating |
| CONVENIENCE STORE LIMITED | Blackpool | A rating |
| Convenience Stores (Wigan) UK Limited T/a Nisa | Wigan | A rating |
| Convenience Stores UK (Blackburn) Limited | Darwen, | A rating |
| CONVENIENCE STORES UK (MANCHESTER) LTD | MANCHESTER | A rating |
| convenience stores uk (menston) ltd | leeds | A rating |
| Convenient Collect Limited trading as HubBox | London | A rating |
| CONVENIENT2YOU LIMITED | Glasgow | A rating |
| Conveo.ai UK Ltd | Altrincham | A rating |
| Convera UK Limited | London | A rating |
| Converge Accountants Limited | Romford | A rating |
| Converge Ltd | London | A rating |
| Convergence (Group Networks) Limited | Solihull | A rating |
| Convergence Business Solutions Limited | Milton Keynes | A rating |
| Convergence labs ltd | Altrincham | A rating |
| Convergint Technologies UK | Crowborough | A rating |
| Convergint Technologies UK, Limited | Crowborough | A rating |
| Convergix UK Ltd | Arbroath | A rating |
| CONVERSATIONAL SOLUTIONS LTD | London | A rating |
| Conversion Factory Ltd | London | A rating |
| CONVERT & MEASURE LIMITED | Milton Keynes | A rating |
| Convert2Cash (Leeds) Limited | LEEDS | A rating |
| Convertr Media Limited | London | A rating |
| Convery Engineering Ltd | Kilrea | A rating |
| Convex Energy Limited | London | A rating |
| Convex Labs Ltd | London | A rating |
| Convex Services Limited | London | A rating |
| Convex UK Services Limited | London | A rating |
| Conveyancing Quotes 4U Limited | Romford | A rating |
| ConVista Consulting Limited | Nottingham | A rating |
| Conviva Ltd | Cheltenham | A rating |
| CONVOSPHERE | London | A rating |
| Convoy Education Ltd | London | A rating |
| Conway Group Healthcare | Magherafelt | A rating |
| Conway Marsh Garrett Technologies Limited | Rendlesham | A rating |
| Conway Marsh Garrett Technologies Limited CMG Technologies | Rendlesham | A rating |
| Conway PMS | London | A rating |
| CONWAY WINDOWS CO. (UK) LIMITED | Southall | A rating |
| Conwy care Ltd | Gresford | A rating |
| Conzummate Tech Ltd | Bury | A rating |
| Cook Compression Ltd | Ellesmere Port | A rating |
| COOK ROBOTHAM ARCHITECTURAL BUREAU LIMITED | London | A rating |
| Cook Taylor Woodhouse Limited | Dartford | A rating |
| COOK Trading Ltd | Sittingbourne | A rating |
| Cook's Street Limited | Cookham | A rating |
| CookDNN limited | Belfast | A rating |
| COOKE AQUACULTURE UK HOLDINGS LIMITED | Bellshill | A rating |
| Cooke Optics Limited | Thurmaston | A rating |
| Cooke Optics Ltd | Leicester | A rating |
| Cooke, Young & Keidan LLP | London | A rating |
| Cookham Dean CC | Cookham | A rating |
| COOKIE CRUMBLE SILEBY LIMITED | SILEBY | A rating |
| Cookie Jar London LTD | Berkshire | A rating |
| COOKIES DESSERTS LTD | London | A rating |
| COOKIES LONDON LTD | Barnet | A rating |
| Cooking it | Bristol | A rating |
| COOKLEY FISHERIES LTD | Kidderminster | A rating |
| Cooknst Ltd | Norwich | A rating |
| Cookpad Limited | Bristol | A rating |
| Cooksditch House Care Ltd | Faversham | A rating |
| Cookson Adventures | London | A rating |
| Cookson Precious Metals Limited | Birmingham | A rating |
| Cool Company Management Ltd | London | A rating |
| Cool Health Ltd | London | A rating |
| Cool Hooves Polo Ltd | Winkfield | A rating |
| COOL PLUS LONDON LIMITED | London | A rating |
| Cool Running Motorsports Ltd t/a Leicester Speedway | Leicester | A rating |
| COOL VALLEY LIMITED | Harmondsworth | A rating |
| Coolabah Capital (UK) Ltd | London | A rating |
| Coolair Bus and Rail Ltd T/as Coolair Logan | Lincoln | A rating |
| Cooley (UK) LLP | London | A rating |
| CoolFun Limited | Blackpool | A rating |
| Coolgarif Technologies Ltd | London | A rating |
| Coolkit Limited | Burnley | A rating |
| Coolr Ltd | London | A rating |
| Coolulu Limited | london | A rating |
| Coolways-UK Ltd | Nottingham | A rating |
| Coombe Academy Trust | New Malden | A rating |
| Coombe Fisheries Ltd | Barnstaple | A rating |
| COOMBE SOLUTIONS LTD | Surbiton | A rating |
| Coombefish Fleetwood Ltd | Fleetwood | A rating |
| Coombes Lane Store Ltd | Birmingham | A rating |
| Coombeshead Farm | Launceston | A rating |
| Coop Restaurant Limited | Edinburgh | A rating |
| Cooper and Co. (Sutton) Limited | Sutton | A rating |
| Cooper and Gracie Limited | Chorley | A rating |
| Cooper Noble Care Ltd | Toxteth | A rating |
| Cooper Parry | Derby | A rating |
| Cooper Poile Associates | London | A rating |
| Cooper Research Technology Limited | Ripley | A rating |
| Cooper Residential Homes Ltd | Leicester | A rating |
| COOPER SAQS (U.K) LTD | London | A rating |
| Cooper Square Technologies UK Ltd | London | A rating |
| Cooper Studio | Chesham | A rating |
| Cooper Tarry Partners LLP | Canterbury | A rating |
| Cooper-Standard Automotive UK Limited | Coventry | A rating |
| Cooperative AI Foundation | Exeter | A rating |
| COOPERHAY LTD | London | A rating |
| Coopermatic Ltd | Sheffield | A rating |
| CooperOstlund ltd | Northampton | A rating |
| COOPERS CONSULTANTS LTD | Ilford | A rating |
| Coopers Fire | Waterlooville | A rating |
| Coopers Mill Limited | Wisbech | A rating |
| CooperVision Manufacturing Limited | Fareham | A rating |
| Coople (UK) Limited | London | A rating |
| COORIE LIVING LIMITED | Moray | A rating |
| Coote Engineering Ltd | Ballygawley | A rating |
| Cootehill Poultry Products Ltd | Derby | A rating |
| Coozy Homes Limited | London | A rating |
| COPA-DATA UK LIMITED | Bristol | A rating |
| COPA90 Limited | London | A rating |
| Copado Limited | London | A rating |
| Copart UK Limited | Bedford | A rating |
| COPAS TRADITIONAL TURKEYS LTD | BERKSHIRE | A rating |
| Copdock & Old Ipswichian Cricket Club | Ipswich | A rating |
| Copenhagen Infrastructure Service Company Ltd | Rotherham | A rating |
| Copenhagen Offshore Partners A/S, UK Branch | Edinburgh | A rating |
| Copenhilll Ltd T/A Pendruccombe House | Launceston | A rating |
| Coperion UK Ltd | Peterborough | A rating |
| Copernus Limited | Hull | A rating |
| Copgrove Hall Stud | Harrogate | A rating |
| Copi Studio Ltd | Bracknell | A rating |
| Copilot Capital Limited | London | A rating |
| Copious Limited | Rochdale | A rating |
| Copius NI Ltd | Newtownabbey | A rating |
| Copland Property Limited | Glasgow | A rating |
| Copley Dental Centre | Halifax | A rating |
| Copner Mini Market | Portsmouth | A rating |
| CoppaFeel! | London | A rating |
| Copper bar London Ltd T/A Copper Ceylon | Bromley | A rating |
| Copper Beeches Limited | Collingham | A rating |
| Copper Connect Care UK Ltd | London | A rating |
| Copper Kitchen | Bicester | A rating |
| Copper Lounge Limited T/A Copper Lounge | Stockport | A rating |
| Copper Pine Studio LLP T/A Palmer & Co. | Storrington | A rating |
| Copper Platter Limited T/A Hitchki | Stockport | A rating |
| COPPER RIVET DISTILLERY | CHATHAM | A rating |
| Copper Technologies (UK) Limited | London | A rating |
| COPPERFIELD GENERAL STORE | BRENTWOOD | A rating |
| COPPERMILL ESTATES LIMITED | Harefield | A rating |
| COPPERSMITH RECRUITMENT AND SERVICES LTD | London | A rating |
| Copperstones Limited | LONDON | A rating |
| Coppice Alupack Ltd | Bridgend | A rating |
| Coppice Bazar Ltd | Oldham | A rating |
| Coppice Garden Centre Ltd | Tamworth | A rating |
| Copping Joyce Surveyors Limited | London | A rating |
| COPPING JOYCE SURVEYORS LIMITED | Essex | A rating |
| Copthall School | London | A rating |
| Copthorne Care Homes Ltd T/as Penlee Residential Care Home | Cornwall | A rating |