| D P S Embroidery Limited | Manufacturing | 2014 |
| D Quinton Plumbing and Heating Ltd | Construction | 2023 |
| D R Driving Ltd | Transport & logistics | 2020 |
| D R Home Solutions Ltd | Construction | 2025 |
| D R Midlands Limited | Hospitality | 2019 |
| D R Workwear Limited | Manufacturing | 2011 |
| D Rose Consultancy Ltd | Information & communication | 2014 |
| D S Aujla Limited | Professional & scientific | 2014 |
| D S Builders & Property Maintenance Services Limited | Construction | 2011 |
| D S T Cleaning Solutions Limited | Administrative & support | 2002 |
| D Salter & SON Roofing Services Limited | Construction | 2010 |
| D Shail Builders Ltd | Construction | 2026 |
| D Shanley Property’S Limited | Real estate | 2025 |
| D Spillane Ltd | Construction | 2026 |
| D Thomas Motors Ltd | Wholesale & retail | 2017 |
| D Triumph Global Resources Ltd | Wholesale & retail | 2026 |
| D Trivedi Limited | Health & social care | 2022 |
| D W Autos Group Limited | Manufacturing | 2019 |
| D W Pointer (Fire Consultants) Limited | Other services | 2000 |
| D Walsh Engineering Services Ltd | Construction | 2020 |
| D Weston Solutions Limited | Administrative & support | 2013 |
| D&A Care Ltd | Professional & scientific | 2021 |
| D&A Drainage Solutions Ltd | Professional & scientific | 2025 |
| D&A Global Exim Ltd | Wholesale & retail | 2025 |
| D&A Group Services Ltd | Construction | 2025 |
| D&A Paving Systems Ltd | Construction | 2024 |
| D&A Printing Ltd | Manufacturing | 2021 |
| D&Ap Limited | Construction | 2019 |
| D&B Lounge Ltd | Hospitality | 2022 |
| D&B Mechanical System Design Ltd | Administrative & support | 2017 |
| D&D Automotive Solutions Limited | Wholesale & retail | 2019 |
| D&D Ducting Limited | Construction | 2024 |
| D&Dr Logistics Limited | Transport & logistics | 2022 |
| D&E Carpentry & Joinery Ltd. | Manufacturing | 2022 |
| D&E Mechanical Services Ltd | Construction | 2021 |
| D&G Lets Limited | Real estate | 2021 |
| D&H Best Investments Limited | Real estate | 2023 |
| D&H Food and Nutrition Limited | Manufacturing | 2019 |
| D&H Trade Hub Ltd | Wholesale & retail | 2025 |
| D&J Barbers UK Ltd | Other services | 2025 |
| D&J Express Ltd | Transport & logistics | 2025 |
| D&Jwalshinvestments Ltd | Real estate | 2022 |
| D&L Lettings Ltd | Real estate | 2022 |
| D&L Nails Salon Limited | Other services | 2024 |
| D&L Peptides Ltd | Professional & scientific | 2026 |
| D&M Consultancy & Software Solutions Limited | Information & communication | 2024 |
| D&M Maintenance Services Limited | Administrative & support | 2026 |
| D&M Services Ltd Ltd | Transport & logistics | 2024 |
| D&M Ultracleaning Warehouses Ltd | Administrative & support | 2025 |
| D&N Building Ltd | Construction | 2022 |
| D&N Cleaning Solutions Ltd | Administrative & support | 2022 |
| D&N Properties Services Limited | Real estate | 2018 |
| D&P (Bristol) Ltd | Wholesale & retail | 2021 |
| D&S Build Ltd | Construction | 2012 |
| D&S Care Services Ltd | Health & social care | 2019 |
| D&S Construction LT Ltd | Construction | 2018 |
| D&S Cousins Ltd | Hospitality | 2019 |
| D&S United Ltd | Administrative & support | 2014 |
| D&T Online Ltd | Wholesale & retail | 2026 |
| D&T Property Venture Limited | Real estate | 2023 |
| D'Agostino Italy Ltd | Wholesale & retail | 2024 |
| D'Arcy Land and Homes Ltd | Professional & scientific | 2025 |
| D'Jan Limited | Wholesale & retail | 2007 |
| D'Vine Grace Limited | Health & social care | 2024 |
| D,D&E Properties Ltd | Construction | 2025 |
| D-Det Limited | Health & social care | 2019 |
| D-Flo Limited | Administrative & support | 2011 |
| D-Volts Electrical Services Ltd | Energy | 2022 |
| D. & a. Services (Rugeley) Limited | | 1979 |
| D. & a. Steering Limited | Manufacturing | 1988 |
| D. a. Plating Jigs Limited | Manufacturing | 2010 |
| D. Cannon Windows Limited | Administrative & support | 1998 |
| D. Cleeton Plastering Ltd | Construction | 2024 |
| D. G. Dujon Ltd. | Health & social care | 2002 |
| D. I. L Electrical Limited | Professional & scientific | 2014 |
| D. JAY Limited | Manufacturing | 1977 |
| D. Mac's GAS Ltd | Construction | 2020 |
| D. Osborne Decorators Ltd | Construction | 2022 |
| D. Pearman (Poultry) Limited | Agriculture & fishing | 1980 |
| D.A. Perry & Co. Limited | Administrative & support | 1957 |
| D.A.C Hwest Ltd | Hospitality | 2025 |
| D.A.F.C C.I.C. | Education | 2026 |
| D.A.Francis CAD Solutions Limited | Construction | 2012 |
| D.A.N.T.E (DO Anything Necessary to Exist ) Ltd | Wholesale & retail | 2020 |
| D.B. Diesel Limited | Administrative & support | 2002 |
| D.C. Financial Limited | Financial services | 1995 |
| D.C. Market Research Limited | Professional & scientific | 2017 |
| D.C.B. Accommodation Limited | Hospitality | 2008 |
| D.C.E.D Software Solutions Limited | Other services | 2017 |
| D.C.H.S. Ltd | Construction | 2006 |
| D.D.S. (North East) Limited | Information & communication | 2012 |
| D.D.S. Dosing and Disinfection Services Ltd | Professional & scientific | 2016 |
| D.E.M.I. Trust CIC | Education | 2023 |
| D.E.Plant Limited | Construction | 2012 |
| D.E.T. Logistics Ltd | Other services | 2011 |
| D.G. Logistics Ltd | Transport & logistics | 2025 |
| D.G.Lewis Estates Holdings Limited | Real estate | 2014 |
| D.H.D Security Limited | Administrative & support | 2025 |
| D.H.P Skyisthelimit Promotions Ltd | Education | 2019 |
| D.I.C.E Group Resources Limited | Construction | 2025 |