| Dalston Medical Group | Carlisle | A rating |
| DALSTON MINI CABS LTD | London | A rating |
| Dalston's Soda Company Ltd | London | A rating |
| Dalton Food Stores | Huddersfield | A rating |
| Dalton Maag Ltd | London | A rating |
| Dalton Terrace Surgery | York | A rating |
| Dalton-in-Furness Cricket Club | Dalton-in-Furness | A rating |
| DaltonTX Limited | Oxford | A rating |
| DALVEE LIMITED | Poulton-Le-Fylde | A rating |
| DALVIR SINGH | ROTHERHAM | A rating |
| Dalyan Kebabs Limited | Cowes | A rating |
| Dalziel & Pow Design Consultants Limited | Clerkenwell | A rating |
| Dalziel Ltd | Bellshill | A rating |
| Dam 3 Limited (Trading as Pythia Sports) | LONDON | A rating |
| Dam Design & Build Ltd | Worthing | A rating |
| DAM HEALTHCARE LIMITED | London | A rating |
| DAMA Engineering Consultants Limited | London | A rating |
| Dama Tech Ltd. trading as Trustful hands | Kingston Upon Thames | A rating |
| DAMAN SAMUDRA LIMITED T/A DAMAN SAMUDRA | Leicester | A rating |
| Daman Star Convenience Store | Leicester | A rating |
| DAMANY LIMITED | LONDON | A rating |
| Damartex UK Ltd | Bingley | A rating |
| Damas Gardens LTD | London | A rating |
| DAMASCA LTD | Worchester Park | A rating |
| Damascena Holdings Limited | Birmingham | A rating |
| Dambuster Studios Ltd | Nottingham | A rating |
| Dame Hannah Rogers Trust 2019 Limited | Ivybridge | A rating |
| DAMHURST LTD | Tunbridge Wells | A rating |
| Damia Group Limited | Guildford | A rating |
| DAMICO LTD | Borehamwood | A rating |
| Damira Dental Studios Ltd | Pinner | A rating |
| Damiraco Limited T/A The Enniskillen Hotel | Enniskillen | A rating |
| Damlar Investment Limited | Canterbury | A rating |
| Damm 1876 Ltd | Bedford | A rating |
| Damnably | London | A rating |
| Damo Altrincham Ltd | Altrincham | A rating |
| DAMORCARE LTD-T/A AZURIL HEALTH GROUP | Chelmsford | A rating |
| Dampco Limited | Brixham | A rating |
| Dams Furniture Ltd | Knowsley | A rating |
| DAMYANG LTD T/A THE TREE STONE | NEW MALDEN | A rating |
| DAN CONSTRUCTION MANAGEMENT LIMITED | London | A rating |
| Dan Klores Communications Limited | London | A rating |
| DAN MOT & SERVICES LTD | Norwich | A rating |
| Dan Pearson Studio | London | A rating |
| Dan Tobin Smith Studio Limited | London | A rating |
| Dan's Barbers | Manchester | A rating |
| Dana Petroleum Limited | Aberdeen | A rating |
| Dana UK Axle Limited | Birmingham | A rating |
| DANA UK DRIVESHAFT LIMITED | Wellingborough | A rating |
| Danaher & Walsh Group Ltd | Loughborough | A rating |
| Danaz Healthcare Ltd (trading as Pax Hill Care Home) | Farnham | A rating |
| Danbeck Ltd | London | A rating |
| Danbury Mission Church | Danbury | A rating |
| Dance Consortium Limited | Birmingham | A rating |
| Dance4 | Nottingham | A rating |
| DanceEast | Ipswich | A rating |
| Dancenbeats Ltd. | London | A rating |
| Dancesport International Ltd | Croydon | A rating |
| DanceTalk Studios LTD | London | A rating |
| Dancing Leopard Clothing Ltd | Walsall | A rating |
| DANCING ROOSTERS LIMITED | Dorset | A rating |
| DANDAIS CARE LIMITED | PETERBOROUGH | A rating |
| Dandara UK Services Ltd T/A Dandara | Milton Keynes | A rating |
| DANDELION CAPITAL LTD | London | A rating |
| DANDELION TRADING (UK) LTD T/A Jiamart | Cambridge | A rating |
| DandelionUK Limited | Finchley | A rating |
| DandelionUK Limited | St Albans | A rating |
| Dandi Living limited | London | A rating |
| Danebridge Medical Practice | Northwich | A rating |
| Danehill Limited | London | A rating |
| Danes Camp Health Care Limited | Northampton | A rating |
| Danes Camp Medical Centre | Northampton | A rating |
| Danes Educational Trust | Chorleywood | A rating |
| Danesbrook House | Cardiff | A rating |
| Danescor Limited | London | A rating |
| Danescroft Dental Practice Limited | Widnes | A rating |
| Danesfield Hotels and Resorts Limited | Marlow | A rating |
| Danesford Grange Care Home | Bridgnorth | A rating |
| Danesh & Co Ltd | London | A rating |
| Danestone Medical Practice LLP | Aberdeen | A rating |
| Danetre Medical Practice | Daventry | A rating |
| Danfoss Limited | Uxbridge | A rating |
| dAngelin & Co Ltd | London | A rating |
| Danger Farms Software Ltd | London | A rating |
| DANGOTE GLOBAL SERVICES LIMITED | LONDON | A rating |
| Dangun Bristol LTD | Bristol | A rating |
| Danhamz Hyde Park Ltd | Leeds | A rating |
| Danhchimedics Ltd | London | A rating |
| DANI DECO LTD | Birmingham | A rating |
| Dani Foods Limited | Boston | A rating |
| Dani Organic Foods Limited | Cantebury | A rating |
| Dani Thirunavukkarasu | Chester | A rating |
| DANIA EDN LTD | Edinburgh | A rating |
| Danial Van Ltd | Manchester | A rating |
| DANICO Care Ltd T/A Pontcanna House Care Home | Cardiff | A rating |
| DANIEL & BAKER SOLICITORS LTD | Oldham | A rating |
| DANIEL BRADLEY LAW LIMITED | HINCKLEY | A rating |
| Daniel Combes Garden Design | Semley | A rating |
| Daniel Crouch Rare Books LLP | London | A rating |
| Daniel J Edelman Limited | London | A rating |
| DANIEL QU (UK) LTD | London | A rating |
| DANIEL REPAIRS LIMITED | Gravesend | A rating |
| DANIEL REPAIRS SERVICES LIMITED | London | A rating |
| Daniel Smyth Investments Ltd | Newcastle upon Tyne | A rating |
| Daniel Thwaites PLC | Blackburn | A rating |
| DANIEL WOLFSON & CO LTD | Harrow | A rating |
| Daniel's Sushi Bar 2 Ltd T/A Danieru Sushi | London | A rating |
| Daniel's Sushi Bar Limited T/A Danieru Sushi | London | A rating |
| Daniela Schlingmann Literary Scouting Ltd | London | A rating |
| DANIELI UK HOLDING LIMITED | Rotherham | A rating |
| Danielle & Daisy Care Ltd | Cobham | A rating |
| Daniels Care Solutions Ltd | Coventry | A rating |
| Daniels Chilled Foods Ltd | Leeds | A rating |
| Daniels Lane 99 Limited | St Austell | A rating |
| Danimi Operations UK Limited | London | A rating |
| Daniq Ltd | Manchester | A rating |
| Danish Bake UK Ltd | London | A rating |
| DANISH CATERING FOOD2GO LIMITED | Bradford | A rating |
| Danish Crown UK Ltd | Rochdale | A rating |
| Danish Kashmiri Catering Limited | Bradford | A rating |
| DANISH REFRIGERATION LTD | Birmingham | A rating |
| DANISH YOUNG WOMEN'S CHRISTIAN ASSOCIATION IN LONDON | London | A rating |
| DANLEO TELECOM SERVICES LIMITED | London | A rating |
| DANLIV LEISURE LIMITED | London | A rating |
| Danly UK Limited | Greenford | A rating |
| Danmak Care Ltd | Newhaven | A rating |
| Danmoof Bike Services Ltd | London | A rating |
| Danmor Lodge Ltd | Weymouth | A rating |
| Dannatt, Johnson Architects | London | A rating |
| Danny Concrete Ltd | Southall | A rating |
| DANNY DECO LIMITED | London | A rating |
| Danny Kent Homes Limited | Hatch End | A rating |
| Danny Ltd | Kilmarnock | A rating |
| Danny Mart Ltd (T/A Danny Mart) | Portsmouth | A rating |
| DANNY SULLIVAN & SONS LTD | LONDON | A rating |
| Danny's Snacks Ltd | Glasgow | A rating |
| Dans Foods Ltd | Milton Keynes | A rating |
| DANS LE NOIR LIMITED | FARRINGDON | A rating |
| DANS NEWS & SUPERMARKETS LIMITED | Benfleet | A rating |
| Dansak Zone UK Limited | Bucks | A rating |
| Danse Lente Ltd | London | A rating |
| Dansini Balakrishnan T/As Kavin superstores | Edgware | A rating |
| Danske Bank A/S, London Branch | London | A rating |
| Danske Commodities UK Limited | London | A rating |
| Danson Electrical UK Ltd | Southampton | A rating |
| Danston Ltd | Hampshire | A rating |
| Dant Y Coed Dental Practice Limited | Wrexham | A rating |
| Danta IT Solutions Limited | Liverpool | A rating |
| Dantex Graphics Ltd | Bradford | A rating |
| DANTO STREET FOOD LTD | Isleworth | A rating |
| DANTON ASSOCIATES LIMITED | AYLESBURY | A rating |
| Danton HR Limited | Buntsford Drive | A rating |
| Danu Insights Limited | Edinburgh | A rating |
| DANU RETAIL LIMITED T/A CO OP | SALTBURN | A rating |
| Danube Properties Consultants Limited | Harrow | A rating |
| Danum Homecare | Doncaster | A rating |
| Danwood (UK Branch) Plc | Galashiels | A rating |
| Danyal Mujtaba Majeed T/A Aroma Asian Restaurant | Burnley | A rating |
| Danysh Traders Ltd | Stockport | A rating |
| Dao Chow Limited T/A Dao Chao | Bristol | A rating |
| DAP Midlands Limited T/a Namaste Dine | Stoke on Trent | A rating |
| DAPHNE FINANCIAL CONSULTING LTD | COVENTRY | A rating |
| Daphne Technologies Ltd | London | A rating |
| DAPTEE GROUP LIMITED | Rochdale | A rating |
| DAPV Limited T/A Boulevard | Worcester | A rating |
| Dar Al Arkan Global UK Holdings Ltd | London | A rating |
| Dar Al Ilm Learning Centre | LONDON | A rating |
| Dar Al Teeb Ltd | London | A rating |
| DAR AL ZAAD | WORCESTOR PARK | A rating |
| Dar Al-Handasah Consultants (Shair & Partners) (UK) Ltd. | London | A rating |
| Dar El Meemar Holding Limited | London | A rating |
| DAR ELECTRICAL CONTRACTORS LTD | Manchester | A rating |
| Dar Global PLC | London | A rating |
| DAR PLUMBING LTD T/A A1 PLUMBING & DIY | Dewsbury | A rating |
| Dar Stores Limited | Merthyr Tydfil | A rating |
| Dar Ul Uloom Islamia Longsight | Manchester | A rating |
| DARABARA BUSINESS LTD | Birmingham | A rating |
| DARAG Europe Limited | London | A rating |
| Daram Care Ltd T/A Ever Care | Coventry | A rating |
| daram khola limited | belfast | A rating |
| Darare Limited | Southam | A rating |
| Daray Ltd | Swadlinctote | A rating |
| Darbar Arts Culture Heritage Trust | Hayes | A rating |
| Darbar Lounge Ltd T/A Chutney's By Hyderabad Darbar | London | A rating |
| DARBARI FANCY TEXTILES (UK) LTD | Southall | A rating |
| Darby & Parrett Ltd | London | A rating |
| Darbyshire Care Limited | Kingsbridge | A rating |
| Darcey Quigley & Co Ltd | Glasgow | A rating |
| Darchini Indian Cuisine | Horsham | A rating |
| Dare International Ltd | London | A rating |
| Dare Me Limited | Havant | A rating |
| DARe-me Consulting Engineers Ltd | Glasgow | A rating |
| Daredevil PR | London | A rating |
| Daregal Gourmet Ltd | Long Stratton | A rating |
| Darethealthcare UK Limited | London | A rating |
| Darfield Road Convenience Store | Cudworth | A rating |
| Dari Autos Ltd | Croydon | A rating |
| Darin Partners Ltd | London | A rating |
| DARIO'S PIZZERIA LTD | Sowerby Bridge | A rating |
| Darius Sair Limited t/as Leeming Dental Clinic | Borehamwood | A rating |