| Dorates Ltd | Health & social care | 2020 |
| Dorchester and Grosvenor Group Limited | Real estate | 2017 |
| Dorel (Europe) Ltd. | Extraterritorial | 1996 |
| Doris Court (Toton) Management Company Limited | Households | 2012 |
| Dorman Hill Associates Limited | Manufacturing | 1975 |
| Dormant Trade Skills Ltd | Education | 2026 |
| Dormina UK Limited | Administrative & support | 2001 |
| Dorohoi Trans Ltd | Transport & logistics | 2018 |
| Dorothy Motors Ltd | Wholesale & retail | 2023 |
| Dorset Leavy Ltd | Wholesale & retail | 2025 |
| Dorset Road (2) Limited | Financial services | 2013 |
| Dorsey's Building Solutions Ltd | Construction | 2026 |
| Dortalla Corporation Limited | Real estate | 2018 |
| Doru Star Driver Services Ltd | Transport & logistics | 2019 |
| Doru&Darius Transport Limited | Transport & logistics | 2018 |
| DOS Bros Tacos Ltd | Hospitality | 2025 |
| Dos-Invest Ltd | Extraterritorial | 2015 |
| Dosaji Ltd | Wholesale & retail | 2020 |
| Dosanjh Property Ltd | Real estate | 2020 |
| Dosemastery Limited | Information & communication | 2025 |
| Doshani Property Ltd | Real estate | 2016 |
| Doska Ltd | Wholesale & retail | 2025 |
| Dosthill Hall Management Company Limited | Households | 2007 |
| Dosti PAN Centre & OFF License Ltd | Wholesale & retail | 2025 |
| DOT Freight Limited | Transport & logistics | 2023 |
| DOT Real Services Ltd | Wholesale & retail | 2024 |
| DOT World Limited | Information & communication | 2022 |
| Dot-To-Dot Little Learners Ltd | Health & social care | 2026 |
| Dotcombuys Ltd | Wholesale & retail | 2023 |
| Dotcreators Technologies Ltd | Information & communication | 2025 |
| Dotmake Transport Ltd | Transport & logistics | 2025 |
| Dots & Tots Ltd | Health & social care | 2018 |
| Dots for Children Ltd | Health & social care | 2019 |
| Double Barrel Jeans Limited | Transport & logistics | 1999 |
| Double EM Services Ltd | Health & social care | 2013 |
| Double EYE Corp Ltd | Real estate | 2018 |
| Double Glazing Leicester Ltd | Construction | 2023 |
| Double M Heating Limited | Construction | 1981 |
| Double T Ltd | Transport & logistics | 2024 |
| Dougal Powrie Tax Services Limited | Professional & scientific | 2010 |
| Dough & Grill Ltd | Hospitality | 2026 |
| Dough Boyzz Ltd | Wholesale & retail | 2025 |
| Douglas Wemyss Solicitors LLP | | 2004 |
| Dounia Grocery KA Ltd | Wholesale & retail | 2023 |
| Dove Food & Spice Limited | Hospitality | 2025 |
| Dove Properties Management Ltd | Real estate | 2018 |
| Dove Resourcing Ltd | Administrative & support | 2015 |
| Dovecote Care Limited | Health & social care | 2013 |
| Dovedale Court Management (Leicester) Limited | Households | 2009 |
| Dovedale Derby Ltd | Wholesale & retail | 2024 |
| Dovedale Lettings Ltd | Real estate | 2025 |
| Dovemount Solutions Limited | Administrative & support | 2025 |
| Dovenby Finest Ltd | Transport & logistics | 2015 |
| Dovetails Joinery Limited | Construction | 2018 |
| DOW Schofield Watts Corporate Finance (Midlands) Limited | Professional & scientific | 2023 |
| Down to Earth Cafe Ltd | Hospitality | 2025 |
| Downhill Consulting Limited | Professional & scientific | 2010 |
| Downton Irwin Ltd | Wholesale & retail | 2025 |
| Downtown Coffee Ltd | Hospitality | 2025 |
| Downtown Computers Limited | Information & communication | 1992 |
| Downtown Trading Ltd | Wholesale & retail | 2024 |
| DP and PB Properties Limited | Real estate | 2020 |
| DP Investors Limited | Financial services | 2023 |
| DP Lacz Ltd | Administrative & support | 2018 |
| DPC (2011) Limited | Real estate | 2011 |
| DPC (London) LLP | | 2011 |
| Dpcore Ltd | Information & communication | 2026 |
| DPF Properties Limited | Real estate | 2013 |
| Dpgv Retailers Ltd | Wholesale & retail | 2024 |
| DPH Developments Ltd | Real estate | 2020 |
| DPJ (UK) Limited | Wholesale & retail | 2007 |
| DPK Invest Ltd | Real estate | 2025 |
| Dplsheryman Ltd | Other services | 2020 |
| DPN Property Ltd | Professional & scientific | 2020 |
| DPO Engineering Ltd | Professional & scientific | 2024 |
| DPO for Schools Limited | Information & communication | 2018 |
| Dppi Ltd | Real estate | 2015 |
| DPR Electrical Services Ltd | Construction | 2021 |
| Dprg Medical Ltd | Professional & scientific | 2025 |
| DPS Properties Limited | Real estate | 2019 |
| DPS Retail Ltd | Wholesale & retail | 2019 |
| DPT Fire Limited | Construction | 2019 |
| DPT Retailers Ltd | Wholesale & retail | 2020 |
| DR & DR Aesthetics Ltd | Health & social care | 2023 |
| DR Ali's Legal & Commercial Limited | Administrative & support | 2020 |
| DR Amar Mistry Limited | Health & social care | 2023 |
| DR ANB Limited | Health & social care | 2026 |
| DR Anokhi Parmar Limited | Health & social care | 2025 |
| DR AR7 Limited | Health & social care | 2024 |
| DR Arun Services Ltd | Health & social care | 2018 |
| DR Azim Ltd | Health & social care | 2026 |
| DR BEN Coyle Ltd | Health & social care | 2014 |
| DR CG Clinic Ltd | Health & social care | 2023 |
| DR Chang Limited | Health & social care | 2009 |
| DR Coffee Limited | Wholesale & retail | 2015 |
| DR Compass Ltd | Information & communication | 2026 |
| DR Constructions Leicester Ltd | Construction | 2023 |
| DR Danielle Grey Psychological Services Ltd | Health & social care | 2022 |
| DR Developments & Electrical Contractors Ltd | Construction | 2024 |
| DR F T Chaudry Ltd | Health & social care | 2014 |