| DE-LIGHT CARE AND SUPPORT LTD | Gillingham | A rating |
| DE&NEZAJ CONSTRUCTIONS LTD | London | A rating |
| DEA1 Limited | Oswaldtwistle | A rating |
| Deafblind Scotland | Glasgow | A rating |
| Deafway | PRESTON | A rating |
| DEAL A PROPERTY LTD | BOLTON | A rating |
| DEAL CORE LIMITED | Birmingham | A rating |
| Deal On Wheels Limited T/A Kiln Farm Motors | Letchworth Garden City | A rating |
| Deal With Dolphin Ltd | Croydon | A rating |
| DEALAMILLION LIMITED | Shipley | A rating |
| Dealberry Limited | Manchester | A rating |
| DEALCARPETS LTD | London | A rating |
| DEALDIO LTD | Ruislip | A rating |
| Dealglobe Limited | London | A rating |
| Dealicious Mealz (UK) LTD | Manchester | A rating |
| Dealogic | London | A rating |
| Deals 247 UK Ltd | Birmingham | A rating |
| Deals Bazaar Ltd | Salisbury | A rating |
| Deals Incorporated LTD | Manchester | A rating |
| DEALS WHEELS LTD | Nelson | A rating |
| Dealscribe Limited | London | A rating |
| Dealstack Ltd | London | A rating |
| Dean & Cauvin Young People's Trust | Edinburgh | A rating |
| DEAN COOPERS LLP | ILFORD | A rating |
| Dean Cross Surgery | Plymouth | A rating |
| Dean Group International Ltd | Manchester | A rating |
| Dean Ivory Racing Ltd | Radlett | A rating |
| Dean Manson LLP | London | A rating |
| Dean Sullivan Limited | London | A rating |
| DEAN TAXIS | GATESHEAD | A rating |
| Dean Wilson LLP | Brighton | A rating |
| Deanhouse Interiors Limited | Holmfirth | A rating |
| Deans Road Convenience Ltd | Wolverhampton | A rating |
| Deansbrook Care Centre LTD | Edgware | A rating |
| Deansbrook Express Ltd T/A Stanley Food & Wine | Edgware | A rating |
| Deansdental Care Ltd | Brighton | A rating |
| Deansgate Aesthetics Ltd. | Manchester | A rating |
| DEANSGATE SURGERY LIMITED | MANCHESTER | A rating |
| DEANUDOM SUPPLIES LTD | Dartford | A rating |
| DEAO LIMITED | Wales | A rating |
| Dear Frances Ltd | London | A rating |
| Dearborn Estates Ltd. | London | A rating |
| Dearne Valley Group Practice | Rotherham | A rating |
| Dearnlea Park Residential Care Home | Rotherham | A rating |
| Dearnsdale Fruit | Stafford | A rating |
| Dearnside Service Station Ltd | Rotherham | A rating |
| Dears Pharmacy & Travel Clinic | Lochgelly | A rating |
| Deba's Corner Ltd | London | A rating |
| Debama Consulting Firm Limited | Dartford | A rating |
| Debate Mate Training Ltd | London | A rating |
| DebbieJones-Mgmt | London | A rating |
| Debblers Ltd | Blackburn | A rating |
| Deben Willow Care Limited | Claydon | A rating |
| Debenham Veterinary Practice | Debenham | A rating |
| Debevoise & Plimpton LLP | London | A rating |
| Debison Albie Ltd | Glasgow | A rating |
| Debit Finance Collections Plc | Orchard Street | A rating |
| DEBITSCREDITS.CO.UK LIMITED | LEEDS | A rating |
| DEBODIES LIMITED | GRAYS | A rating |
| DEBONAIR COOLING LIMITED | London | A rating |
| DEBRETT'S PRIVATE FINANCE LIMITED | London | A rating |
| Debtal Architecture Ltd | Manchester | A rating |
| DecaDent Ltd | Bristol | A rating |
| Decagon AI UK Ltd | London | A rating |
| Decant Group Limited | London | A rating |
| Decathlon UK Ltd | London | A rating |
| DECCA GROUP LIMITED T/A ARK EDUCATION CENTRE | ROMFORD | A rating |
| Deccan Junction | Watford | A rating |
| DECCAN PRIME SOLICITORS LLP | HARROW | A rating |
| DECCAN TRADING LTD | Manchester | A rating |
| December19 Limited | London | A rating |
| Decent Construction Limited | Dagenham | A rating |
| Decent Facilities Ltd | Coventry | A rating |
| Decent Packaging Ltd | London | A rating |
| Decent Price Removal Ltd | Ilford | A rating |
| DECENT SCISSOR CUT LTD | Bristol | A rating |
| DECENT SHOP FRONT SHUTTERS LIMITED | Windsor | A rating |
| Decently Ltd | Manchester | A rating |
| Decentra Project Ltd | London | A rating |
| Decerna Limited | Cramlington | A rating |
| Dechamps Law Ltd | London | A rating |
| Dechert LLP | London | A rating |
| DECHOMAI LTD | Glasgow | A rating |
| Dechra Limited | Skipton | A rating |
| Dechra Pharmaceuticals Holdings Limited | Northwich | A rating |
| Dechra Pharmaceuticals Limited | Northwich | A rating |
| DeciBio Consulting Ltd | London | A rating |
| DECIEM UK LTD | London | A rating |
| DECILLION DIGITAL LIMITED | Brentford | A rating |
| Decimal Factor Ltd | London | A rating |
| DECIMAL HEALTHCARE SERVICES LIMITED | Dartford, | A rating |
| Decimal Point Analytics Limited | Barking | A rating |
| Decimal Technologies Ltd | Bedford | A rating |
| Decision Consultant Solutions Ltd | Hull | A rating |
| Decision Inc. United Kingdom | London | A rating |
| Decision Insight Information Group | West Malling | A rating |
| DECISION LAB LTD | LOUGHBOROUGH | A rating |
| Decision Studio Limited | Hertfordshire | A rating |
| Decision Technology limited | London | A rating |
| DECITI HOMES LIMITED | London | A rating |
| Deckers Europe Ltd | LONDON | A rating |
| DECNUK LIMITED | Oxford | A rating |
| Deco Floors Limited | London | A rating |
| Deco Moore Studio Limited | London | A rating |
| Decoded | London | A rating |
| DECODESTORESUK LIMITED T/A BEST MART | London | A rating |
| DECONSTRUCTED LIMITED | Cleckheaton | A rating |
| Decor (Bristol) Limited | Bristol | A rating |
| DECOR RETAIL LTD | Maidenhead | A rating |
| DECOR TRADER LIMITED | UXBRIDGE | A rating |
| DECORATIVE CONCEPTS UK LTD | SLOUGH | A rating |
| Decorative Panels Holdings Ltd | Elland | A rating |
| DECORE4U LTD | Wolverhampton | A rating |
| Decus Insurance Brokers Limited | London | A rating |
| Decypher Technologies UK Limited | Cardiff | A rating |
| Deddington Health Centre | Deddington | A rating |
| Dedert International (UK) | Maidenhead | A rating |
| Dedicated Care East Anglia Ltd | King's Lynn | A rating |
| Dedicated Life Care Limited | Ilford | A rating |
| DEDICATED SAMEDAY COURIER LTD | London | A rating |
| Dedigama Holdings Limited | Twickenham | A rating |
| Deducta Ltd | London | A rating |
| Dee & Lee Ltd | Bourne | A rating |
| Dee Bee MOT Ltd | Colliers Wood | A rating |
| Dee Kay Knitwear LTD | Leicester | A rating |
| Dee News | Yateley | A rating |
| Dee Northern Ltd | Bradford | A rating |
| Dee Set Logistics Ltd | Stoke on Trent | A rating |
| Dee View Court Care Home | Aberdeen | A rating |
| Dee.ie Ltd | Derry City | A rating |
| Dee&Tee Care Agency Ltd | Walsall | A rating |
| Deeangels Care Limited | Coventry | A rating |
| DEEBEETOM VENTURES LTD T/A NEW LIVING | BEDFORD | A rating |
| Deecon Consulting Limited | Uxbridge | A rating |
| Deed Construction Ltd | Mansfield | A rating |
| Deeigel Ltd | London | A rating |
| Deejees Ltd t/a Tiara Organic Hair and Beauty | London | A rating |
| Deem Global (UK) Limited | London | A rating |
| Deen & Sons Ltd | Balloch | A rating |
| DEEN ALVI LTD | Warrington | A rating |
| Deen Barbers | Leighton Buzzard | A rating |
| Deen Care Ltd | Holywell | A rating |
| Deen Consult Services Ltd | London | A rating |
| DEEN TRUST INTERNATIONAL LIMITED | NOTTINGHAM | A rating |
| Deenex Intl Limited T/A Greenbanks Heritage | Gravesend, | A rating |
| Deenland Limited | Croydon | A rating |
| Deenova UK Limited | East Sussex | A rating |
| Deenz Design Uk Limited | Newcastle-upon-tyne | A rating |
| Deeon Limited | Wickford | A rating |
| Deep Blue Biotech Limited | Harpenden | A rating |
| DEEP CLEAN EXPERTS LTD | Wembley | A rating |
| Deep Consulting UK Ltd | Rugby | A rating |
| Deep Contractors Ltd | Uxbridge | A rating |
| Deep Courier LTD | West Bromwich | A rating |
| Deep Divers LTD | London | A rating |
| Deep Dock BV Limited | Middlesex | A rating |
| Deep Enterprice Limited | Eastbourne | A rating |
| Deep GRC London Ltd | Uxbridge | A rating |
| Deep Grey Research Ltd | London | A rating |
| DEEP HEALTHCARE SERVICES LIMITED | Leeds | A rating |
| Deep Knowledge Analytics Limited | London | A rating |
| Deep Medical | London | A rating |
| DEEP OCEAN CONTRACTING LTD | Ilford | A rating |
| Deep Planet Limited | London | A rating |
| Deep Render Ltd | London | A rating |
| Deep Science Ventures Ltd | Ingatestone | A rating |
| Deep Sea Electronics Ltd | Hunmanby | A rating |
| Deep Sea Rig (UK) Ltd | Eastleigh | A rating |
| Deep Soil Mixing Ltd | Greenfield | A rating |
| Deep.Meta LTD | London | A rating |
| DEEPA 86 LTD | Swindon | A rating |
| DEEPAK'S CONVENIENCE STORES LTD | LANCASHIRE | A rating |
| Deepakshilpi Ltd T/A The Crags Hotel and Desh Restaurant | Callander | A rating |
| DeepAlert Limited | Bromley | A rating |
| Deepcut Village Dental Practice | Deepcut | A rating |
| Deepdale Trees Limited | Sandy | A rating |
| Deepdale Tyres & Auto Centre Limited | Preston | A rating |
| Deepdene Care Limited | West MIdalnds | A rating |
| Deepfin Research Limited | London | A rating |
| DeepFlow | London | A rating |
| DeepForm Limited | Cambridge | A rating |
| Deepika Sweet Centre Ltd | West Bromwich | A rating |
| Deepki UK Ltd | London | A rating |
| DeepL UK Limited | LONDON | A rating |
| Deeplish Property Group Ltd | Rochdale | A rating |
| Deepmay Technologies Limited | Birmingham | A rating |
| DeepMirror Ltd | London | A rating |
| Deepnet Security Ltd | Potters Bar | A rating |
| DeepOcean Subsea Services Limited | Aberdeen | A rating |
| DeepReel Limited | London | A rating |
| DeepResponse Ltd | London | A rating |
| Deepsea Technologies UK Ltd | Bromborough | A rating |
| DEEPSEED INSIGHTS LTD | Farnborough | A rating |
| Deerness Park Medical Group | Sunderland | A rating |
| Deerns UK Limited | London | A rating |
| DEES Imports Ltd | London | A rating |
| Deesha International Limited | Harrow | A rating |
| Deeside Dragons Ice Hockey Club | Deeside | A rating |
| Deethya Solutions Private Limited | Aberdeen | A rating |
| Deevi Technologies Ltd | Leeds | A rating |