| DCS Industrial Developments Limited | Durham | 2020 |
| DCS Investments Limited | Nottingham | 1996 |
| DCS Systems Limited | Birmingham | 2015 |
| DCS Trading Group Ltd | Salford | 2016 |
| Dcsrm Limited | Halesowen | 2024 |
| DCT Property Lettings Limited | Doncaster | 2024 |
| Dctc Group Ltd. | Bristol | 2016 |
| Dctc Holdings Ltd. | Bristol | 2016 |
| Dctr Ltd | London | 2020 |
| Dcuk (FM) Limited | Crawley | 2015 |
| DCV Plant Services Ltd | Bedford | 2012 |
| Dcvl Ltd | Milton Keynes | 2023 |
| DCW Services Limited | Edinburgh | 2017 |
| DD &Service Ltd | Loughton | 2021 |
| DD Agencies Ltd | Aberdeen | 2021 |
| DD Global Parcels Limited | London | 2020 |
| DD Investments Ltd | Newcastle Upon Tyne | 2013 |
| DD Outdoors Ltd | Edinburgh | 2021 |
| DDC Group Ltd | Worksop | 2025 |
| DDC Recruit Limited | Nottingham | 2004 |
| Ddeluxe Decor Ltd | Nottingham | 2025 |
| DDG Group Limited | Cheadle | 2023 |
| DDH Electrical Services Limited | Waterlooville | 2024 |
| Ddieci UK Ltd | Newry | 2010 |
| DDL Consulting Limited | London | 2022 |
| DDL117 Limited | London | 2009 |
| DDL80 Limited | London | 2008 |
| Ddmb Global Concept Ltd | Broxbourne | 2020 |
| DDN Groundworks Ltd | Milton Keynes | 2023 |
| DDN Plantworks Ltd | Milton Keynes | 2023 |
| Ddnt Wholesale Limited | Liverpool | 2024 |
| Ddotcomms Ltd | St Johns Wood | 2014 |
| DDP Limited | London | 1987 |
| DDS Alliance SA / Ltd | Barking | 2017 |
| DDV Audio Limited | Newton Abbot | 2007 |
| Ddws Limited | St. Albans | 2001 |
| Ddzc Management Ltd | Edinburgh | 2012 |
| DE Beers Jewellers Trade Mark Limited | London | 2000 |
| DE Boer & Schardijn Ltd | Brackley | 2006 |
| DE Burgh London Limited | Chichester | 2011 |
| DE Cave Nominees Limited | Barnet | 1999 |
| DE Cecco Tiling Ltd | Glasgow | 2013 |
| DE Courcy Electrical Ltd | Royston | 2024 |
| DE Facto 1109 Limited | London | 2004 |
| DE Facto 1229 Limited | Sevenoaks | 2005 |
| DE Freville Court Management Company Limited | Cambridge | 1996 |
| DE Gaul Ltd | Bembridge | 2015 |
| DE Giovanni Invest Limited | London | 2024 |
| DE Giovanni Norway Limited | London | 2024 |
| DE Great Company Ltd | Northampton | 2023 |
| DE Jérusalem Ltd. | London | 2021 |
| DE L'Angle Mews Management Ltd | Canterbury | 1999 |
| DE Lange Invest Limited | London | 2024 |
| DE Lord & Company Limited | Surrey | 2003 |
| DE Mare Holding Ltd | London | 2020 |
| DE Miyaga Limited | Beckenham | 2019 |
| DE Montfort Estates Limited | Leicester | 1985 |
| DE Morgan College Limited | Kent | 1997 |
| DE Nominees Limited | Norwich | 2013 |
| DE Novo Business Ventures Limited | Langstone | 2020 |
| DE Nuit Ltd | Bristol | 2025 |
| DE Project Consulting Ltd | Aylesbury | 2010 |
| DE Scotia Limited | London | 2018 |
| DE Selincourt Wines Limited | Alresford | 2010 |
| DE Sheng Limited | Manchester | 2022 |
| DE Sousa Holdings Ltd. | Sutton | 2022 |
| DE Varde Limited | Newark | 2017 |
| De'Luxe Lace Ltd | London | 2024 |
| De-Ann Sarah Dechausay Ltd | London | 2024 |
| De-Ion Limited | Cullompton | 2017 |
| De-Lux Merchandise Company Limited | London | 1982 |
| Deacon Agricultural Ltd | Rugeley | 2022 |
| Deacon Properties (Lavenham) Limited | Halstead | 2013 |
| Deaconcapital Club I Limited | London | 2019 |
| Deaconcapital Real Estate Asset Management Limited | London | 2019 |
| Deaconcapital Real Estate Investments Limited | London | 2019 |
| Deacondale Limited | Leeds 9 | 1980 |
| Dead Dolly Limited | Stevenage | 2019 |
| Dead Good Burrito Limited | Worthing | 2011 |
| Dead Legacy Ltd | Bolton | 2010 |
| Dead Mouse Productions Ltd | Burntwood | 2014 |
| Dead on the Vine Limited | Loughborough | 2020 |
| Dead OR Alive Recycling Limited | Wolverhampton | 2023 |
| Deadend Ltd | Brighton | 2012 |
| Deadline Couriers Limited | Buckinghamshire | 1997 |
| Deadline Express (UK) Limited | Buckinghamshire | 1997 |
| Deadline Express Deliveries Limited | Buckinghamshire | 1997 |
| Deadline Group Limited | Buckinghamshire | 1984 |
| Deadline International Limited | Buckinghamshire | 1999 |
| Deadline Next Day Limited | Buckinghamshire | 1997 |
| Deadline Same Day Limited | Buckinghamshire | 1997 |
| Deadline Worldwide Limited | Buckinghamshire | 1984 |
| Deaf Club Ltd | Slough | 2023 |
| Deaf Elevation Ltd | Doncaster | 2021 |
| Deal Assured Limited | Leeds | 2005 |
| Deal City Limited | London | 2015 |
| Deal Kings Ltd | Potters Bar | 2016 |
| Dealab Group Limited | London | 2018 |
| Dealer "Free-Ads" Paper Ltd - the | Co Tyrone | 1998 |
| Dealer Car Manager Limited | Birmingham | 2003 |