| Delta Wholesale LDN Ltd T/A Delta Mart | Watford | A rating |
| Delta XD Limited | Basingstoke | A rating |
| Delta-T Devices Ltd | Burwell | A rating |
| DELTABASE COMMUNICATIONS LIMITED | HOUNSLOW | A rating |
| Deltaclass Technology Solutions Limited | Slough | A rating |
| deltaflare Ltd | Richmond | A rating |
| Deltapro Tech Ltd | London | A rating |
| Deltashor Limited | Purfleet | A rating |
| DeltaTicker Ltd | Watford | A rating |
| DELTATRACK LIMITED | London | A rating |
| Deltatre Limited | London | A rating |
| DELTAUK SERVICES LTD | ilford | A rating |
| DeltaXML Limited | Malvern | A rating |
| Deltec International Couriers Ltd | Hounslow | A rating |
| Deltek GB Ltd | Hammersmith | A rating |
| DELTEQ Ltd | London | A rating |
| Delton Homes Limited | DERBY | A rating |
| Delton Properties Limited | London | A rating |
| Deltroit Asset Management (UK) LLP | London | A rating |
| Deltron Lifts Limited | Tividale | A rating |
| DELUCHIZ WORLD LIMITED | Wolverhampton | A rating |
| Deluxe 142 Limited | London | A rating |
| Deluxe Achievers Ltd | Manchester | A rating |
| Deluxe Art & Theme Limited | Portadown | A rating |
| Deluxe Beds Ltd | Huddersfield | A rating |
| Deluxe Dry Cleaners Ltd | Essex | A rating |
| Deluxe Law Chambers Limited | Stockport | A rating |
| Deluxe Manna Ltd | London | A rating |
| Deluxe Media Europe Limited | Perivale | A rating |
| Deluxe Nails London Ltd | London | A rating |
| Deluxe Services Limited | London | A rating |
| Deluxe Sign Services Ltd | Colchester | A rating |
| Deluxe Staffing Limited | Hounslow | A rating |
| DELUXE SUPPORTED LIVING SERVICES LTD | CHADWELL HEATH | A rating |
| DELUXSMILE LIMITED | London | A rating |
| Delvendahl Martin LLP | London | A rating |
| Dem Dx Limited | London | A rating |
| DEM PHARMACEUTICALS LIMITED | London | A rating |
| DEM RESTAURANT | LONDON | A rating |
| DEMA residential homes ltd | hull | B rating |
| Demand Recruitment Services LTD | London | A rating |
| Demand-Genius Limited | London | A rating |
| Demandbase Limited | St. Albans | A rating |
| DemandScience UK Limited | London | A rating |
| Demandtex Ltd | London | A rating |
| Dematic Ltd | Banbury | A rating |
| DEMEI UK LIMITED | London | A rating |
| DeMellier Ltd | London | A rating |
| Demelza Hospice Care for Children | Sittingbourne | A rating |
| Dementech Limited | London | A rating |
| Dementiev Fine Jewellery Ltd | London | A rating |
| Demerzel Solutions Limited | London | A rating |
| DEMICON LTD | MANCHESTER | A rating |
| DEMIDAV LTD | NORTHAMPTON | A rating |
| Deminor Recovery Services UK Limited | London | A rating |
| Demipower Group | Ruislip | A rating |
| Demir and Demir Ltd t/as Central 42 | BEVERLEY | A rating |
| DEMIR TRADE LTD | LONDON | A rating |
| DEMIRA JEWELS PVT. LTD | Edinburgh | A rating |
| DEMIRKIRAN LTD | London | A rating |
| Demmy Kitties Childcare Services Ltd | London | A rating |
| Democracy Counts Limited | WARRINGTON | A rating |
| Democrance Limited | Canterbury | A rating |
| Democratic Holdings Ltd | London | A rating |
| Demon Yachts Ltd | ALDEBURGH | A rating |
| Demonstration of Holy Ghost and Power Ministry | Edinburgh | A rating |
| DeMontfort Medical Centre | Evesham | A rating |
| Demsa Accounts Ltd | London | A rating |
| Demse Technical Systems Limited | London | A rating |
| Demsun UK | Birmingham | A rating |
| Den.Co.Down Ltd | Belfast | A rating |
| Dena London Limited T/A Dena Supermarket | London | A rating |
| Denali Advanced Integration Europe Limited | London | A rating |
| Denaploy Limited | St Leonards-on-Sea | A rating |
| DENASS LAWYERS | LEICESTER | A rating |
| Denbrook Service Station | Leeds | A rating |
| Denby Cricket Club | Derby | A rating |
| Denby Cricket Club | Holmfirth | A rating |
| Denby Dale Cricket Club | Huddersfield | A rating |
| Denca Controls Limited | Widnes | A rating |
| Dencare Clinic Limited | Orpington | A rating |
| Dencare Limited | Crowborough | A rating |
| Denclean Dental Practice Ltd | Edgware | A rating |
| DENCORP LTD | Luton | A rating |
| Dendrite Clinical Systems | New Malden | A rating |
| Dendro Limited | Ealing | A rating |
| Dendron Brands Limited | Watford | A rating |
| Dene Court Care Home Limited | Exeter | A rating |
| Denebunu Limited | London | A rating |
| Denefield School | Reading | A rating |
| Denehurst Care LTD | Bury | A rating |
| Denham Capital Management (UK) LLP | London | A rating |
| Denham Grove Hotel Limited | Denham | A rating |
| Denham Village Superstore Ltd | Slough | A rating |
| Denhan International Limited | London | A rating |
| Denim Hut Ltd | Manchester | A rating |
| DENIOS LIMITED | Newport | A rating |
| Denis Ferranti Meters Ltd | Bangor | A rating |
| Denis Local Store Limited trading as Liscard Stop & Shop Premier | Wallasey | A rating |
| Denis's Kebab Centre Limited | High Wycombe | A rating |
| Denisa Telecom Limited | Horsham | A rating |
| Denise Care Limited | Crawley | A rating |
| Deniz Beren Ltd | Gillingham, Kent | A rating |
| Deniz Continental Food Store | Wrexham | A rating |
| DENIZ FOOD & WINE LTD T/A BRITISH EXPRESS | London | A rating |
| DENIZ PROPERTY INVESTMENTS LTD | London | A rating |
| Denmark Management Limited | London | A rating |
| Denmark Street Dental Practice Limited | Gateshead | A rating |
| Denmark Street Surgery | Darlington | A rating |
| Denmax Ltd | Chorleywood | A rating |
| Denmet Limited T/A Milas Turkish Kitchen & Bar | Dundee | A rating |
| Denning Farms Ltd | TRURO | A rating |
| Dennis & Robinson Ltd trading as Paula Rosa Manhattan | Lancing | A rating |
| Dennis Eagle Limited | Warwick | A rating |
| Dennison Commercials Limited | Ballyclare | A rating |
| Dennison Trailers Limited | Lancaster | A rating |
| DENNISSOPHIA LTD | Manchester | A rating |
| Dennistoun Baptist Church SCIO | Glasgow | A rating |
| DENNY ENTERPRISES INT'L LTD | IRVINE | A rating |
| Denodo Technologies LTD | London | A rating |
| Denora Healthcare Ltd | Kidderminster | A rating |
| Denovo Health Group Limited | Manchester | A rating |
| DENPEDIA LIMITED | London | A rating |
| DENS SUPER STORE LIMITED | Dundee | A rating |
| Densar Limited | London | A rating |
| DENSEA LTD | Leicester | A rating |
| DENSO Automotive UK Ltd | COVENTRY | A rating |
| DENSO Manufacturing UK Limited | Telford | A rating |
| Denso Marston Limited | Bradford | A rating |
| Denstone College | Uttoxeter | A rating |
| DENT CENTRE PLUS LTD | Glasgow | A rating |
| Dent Hub Smiles Ltd | Gloucester | A rating |
| Dent.O.Care Professional Ltd T/A Dent-O-Care | London | A rating |
| Dent41 Limited | Leicester | A rating |
| DENTA CARE CHESHIRE LTD | Altrincham | A rating |
| DENTA CLINIC | LONDON | A rating |
| DENTAFLY CONSULTANCY LTD | England | A rating |
| Dentahub (Shropshire) Ltd | Shropshire | A rating |
| Dental & Facial Aesthetic Addlestone | Addlestone | A rating |
| Dental Art Implant Clinics | London | A rating |
| Dental Beauty Basildon Ltd | Basildon | A rating |
| DENTAL BEAUTY GROUP LTD | Macclesfield | A rating |
| Dental Care 4U | Peacehaven | A rating |
| Dental Care Centre | Eastleigh | A rating |
| Dental Centre of Excellence | Redditch | A rating |
| Dental Centre Turkey UK Limited | Milton Keynes | A rating |
| Dental Ceramic Design Ltd | London | A rating |
| Dental Concepts Partnership Whitchurch | Whitchurch | A rating |
| Dental Delight Smiles Limited | Lincolnshire | A rating |
| Dental Direct UK Ltd | Huntingdon | A rating |
| Dental Excel Ltd | Ipswich | A rating |
| Dental Excellence Labs Ltd | Liverpool | A rating |
| Dental Express (Edinburgh) Ltd | EDINBURGH | A rating |
| Dental Group Ltd | Ringwood Hampshire | A rating |
| Dental Harmonics Centre Limited | London | A rating |
| Dental Harmony LTD | London | A rating |
| DENTAL KIDS LTD | LONDON | A rating |
| Dental Spa Solutions Ltd | Leamington Spa | A rating |
| DENTAL SUITE LTD | MILTON KEYNES | A rating |
| Dental Wellness Holdings | Reading | A rating |
| Dental Works By Shaz & Associates | Milton Keynes | A rating |
| Dental World 1 Ltd | Belfast | A rating |
| Dental World Cornwall Ltd. | St Columb Major | A rating |
| DentalAvenue | Spennymoor | A rating |
| Dentalcare Group | Hook | A rating |
| Dentalessence | Worthing | A rating |
| Dentality @ Hoddesdon | Hoddesdon | A rating |
| Dentalnova Limited | Cwmbran | A rating |
| Dentalserve.net Ltd | Gravesend | A rating |
| Dentaprime UK Plc | London | A rating |
| DentaQuest LTD | Weston Super Mare | A rating |
| DentArtWork Dental Care | Lechlade | A rating |
| Dentaz Limited t/a Ponsford 59 Dental Practice | Minehead | A rating |
| DENTCARE DENTAL LAB UK LTD | Kempston | A rating |
| Dentex Healthcare Group Limited | London | A rating |
| Dentinal Tubules Limited | Watford | A rating |
| DENTIST NOW LIMITED T/A Epping Dental | Epping | A rating |
| Dentistry by Abdul | Glasgow | A rating |
| Dentistry for all | Nelson | A rating |
| Dentistry on Dashwood | Newton Stewart | A rating |
| Dentistry on Gipsy Hill | London | A rating |
| DentistryatBD4 | Bradford | A rating |
| Dentists at Watling Street | Fulwood, Preston | A rating |
| DENTLIVA LTD | London | A rating |
| Dentology Healthcare Limited | Grimsby | A rating |
| DENTON CONVENIENCE STORE LTD | Manchester | A rating |
| Denton Corker Marshall llp | London | A rating |
| Denton Go Local | Denton | A rating |
| Denton St Lawrence Cricket Club | Denton | A rating |
| Denton turret Medical Centre | Newcastle upon Tyne | A rating |
| Denton West Cricket Club | Manchester | A rating |
| Dentons Europe LLP | London | A rating |
| Dentons Global Services (UK) Holding Limited | London | A rating |
| Dentons UK and Middle East Legal Services | London | A rating |
| Dentoworld | Colchester | A rating |
| DENTOZEN LTD | Enfield | A rating |
| Dentsply IH Limited | Weybridge | A rating |
| DENTSTONE LIMITED T/A NEWICK TANDOORI | East Sussex | A rating |
| DENTSTONE LTD t/a Newick Village Tandoori | Newick | A rating |
| DENTSU SOKEN UK, LTD. | London | A rating |