| D-Luxe Living (Beeston) Limited | Real estate | 2022 |
| D-Luxe Living (Mansfield Road) Limited | Financial services | 2024 |
| D-Luxe Living Limited | Real estate | 2021 |
| D. a. Braisby Limited | Agriculture & fishing | 2012 |
| D. Bamford Limited | Transport & logistics | 2008 |
| D. Burkle and Sons Limited | Manufacturing | 2022 |
| D. COX Amusements Limited | Arts & recreation | 1985 |
| D. Cresswell & SON (Electricians) Limited | Construction | 1962 |
| D. Howard Plumbing Ltd. | Construction | 2013 |
| D. J. & J. Engineering Services Limited | Professional & scientific | 2009 |
| D. J. Houghton & Sons (Groundworks) Limited | Construction | 2006 |
| D. K. RAM Limited | Wholesale & retail | 1998 |
| D. Wells Cutting Formes Limited | Manufacturing | 2022 |
| D.A.K Service Limited | Construction | 2012 |
| D.A.M.Futures Limited | Information & communication | 2014 |
| D.Baker Builders Ltd | Construction | 2024 |
| D.C.I. Power Limited | Construction | 1978 |
| D.E. Holdings (Midlands) Limited | Administrative & support | 2020 |
| D.E. Luxury Safari Concierge Limited | Administrative & support | 2020 |
| D.G. Electrical (Nottingham) Ltd | Construction | 2020 |
| D.G. Private Hire Limited | Transport & logistics | 1973 |
| D.G. Richardson & Sons (Farmers) Limited | Agriculture & fishing | 1977 |
| D.G. Scott Limited | Construction | 1983 |
| D.H.A. (Calverton) Limited | Manufacturing | 2000 |
| D.Harrison (U.K) Limited | Water & waste | 2013 |
| D.Harrison Group (U.K) Limited | Financial services | 2023 |
| D.I.F.M Ltd | Information & communication | 2025 |
| D.J & D.C Ltd | Wholesale & retail | 2020 |
| D.J.S Rail Ltd | Construction | 2018 |
| D.K. Rumsby & Co Limited | Professional & scientific | 2000 |
| D.K.E. Electrical Limited | Construction | 2015 |
| D.L. Rhodes and SON Limited | Construction | 2001 |
| D.M.Ali Limited | Health & social care | 2013 |
| D.M.P. Logistics Ltd | Professional & scientific | 2009 |
| D.M.S Plumbing & Bathrooms Ltd | Construction | 2025 |
| D.N.W. Services Limited | Construction | 2007 |
| D.P.P. Limited | Construction | 1999 |
| D.P.S. (Beeston) Limited | Construction | 1967 |
| D.P.T. Construction Limited | Construction | 1995 |
| D.R Datacom Services Limited | Information & communication | 2013 |
| D.R. Construction Limited | Real estate | 1995 |
| D.S. Services (Nottingham) Limited | Construction | 2005 |
| D.S.I.A.S Ltd | Professional & scientific | 2017 |
| D.W Roofing & Maintenance Ltd | Construction | 2020 |
| D.W. Decor Limited | Other services | 2001 |
| D.W.S (UK) Ltd | Construction | 2013 |
| D17ARL Ltd | Real estate | 2021 |
| D18ARL Ltd | Real estate | 2023 |
| D2 Fast Food Ltd | Hospitality | 2024 |
| D200 Energy Limited | Energy | 2014 |
| D2B Analytics Limited | Professional & scientific | 2025 |
| D3 Financial Limited | Real estate | 2011 |
| D3 Medicals Limited | Health & social care | 2011 |
| D3C Limited | Professional & scientific | 2007 |
| D4 Properties Limited | Real estate | 2008 |
| D4G Destined 4 Greatness Ltd | Wholesale & retail | 2018 |
| D4L Limited | Wholesale & retail | 2013 |
| D818 CS Ltd | Hospitality | 2026 |
| DA Brooks Carpentry & Restoration Ltd | Manufacturing | 2026 |
| DA DOO RON RON Productions Ltd | Information & communication | 2024 |
| DA Silva Motors Limited | Wholesale & retail | 2026 |
| DA TAP and Go Ltd | Hospitality | 2025 |
| Daal's Kitchen Ltd | Hospitality | 2023 |
| Daata Motors Ltd | Wholesale & retail | 2021 |
| Daavat Ltd | Hospitality | 2025 |
| DAB Architectural Consultancy Limited | Professional & scientific | 2011 |
| DAB DAB Limited | Wholesale & retail | 2025 |
| Dabbl Digital Ltd | Professional & scientific | 2024 |
| Dabbler Media Limited | Information & communication | 2016 |
| Dabell Property Group Limited | Real estate | 2025 |
| DAC Elviria Limited | Other services | 2018 |
| Dacrylate Limited | Real estate | 1958 |
| Dacrylate Paints Limited | Manufacturing | 1983 |
| Dacs Services Ltd | Administrative & support | 2024 |
| Dactiq Ltd | Information & communication | 2025 |
| Dada Auto Bodyworks Ltd | Wholesale & retail | 2024 |
| Dadjesmom Ltd | Transport & logistics | 2013 |
| DAF Logistics Ltd. | Wholesale & retail | 2020 |
| Daffe Care Consultancy Limited | Health & social care | 2025 |
| Daffodil Developments Ltd | Real estate | 2010 |
| Daffodil Tea Room Ltd | Hospitality | 2024 |
| Dagiwa Services Ltd | Transport & logistics | 2019 |
| Dahlak Ltd | Transport & logistics | 2022 |
| Dahlia Interiors Limited | Wholesale & retail | 2022 |
| Dahlio's Foods Ltd | Hospitality | 2025 |
| Dahlios Desserts Ltd | Hospitality | 2025 |
| DAI NAM Holdings Ltd | Real estate | 2025 |
| Daijaan Limited | Administrative & support | 2018 |
| Dailside Limited | Information & communication | 2025 |
| Daily Cryptic Crossword Ltd | Information & communication | 2025 |
| Daily Daily Limited | Wholesale & retail | 2025 |
| Dairy Communications Limited | Professional & scientific | 2002 |
| Dairy Creative Limited | Professional & scientific | 2025 |
| Dairy Futures | Agriculture & fishing | 2012 |
| Dairy Futures Loan Company Limited | Financial services | 2013 |
| Dairy Tops Limited | Manufacturing | 2020 |
| Daisy Consulting Services Limited | Professional & scientific | 2019 |
| Daisy Health Ltd | Health & social care | 2019 |
| Daizer Tech Limited | Manufacturing | 2018 |
| Dakin Electrical Ltd | Construction | 2015 |