| Deduct Ltd | Administrative & support | 2015 |
| DEE and Datch Food Fight Limited | Extraterritorial | 2010 |
| DEE Autos Ltd | Wholesale & retail | 2025 |
| DEE Boss Holding Ltd | Financial services | 2025 |
| DEE Desserts Ltd | Wholesale & retail | 2024 |
| DEE Dobs Ltd | Health & social care | 2022 |
| DEE G Logistics Services Ltd | Transport & logistics | 2013 |
| DEE J Care Ltd | Public administration | 2025 |
| DEE Midlands Limited | Construction | 2012 |
| DEE Serenity Ltd | Health & social care | 2023 |
| DEE Spark Cleaning Ltd | Administrative & support | 2025 |
| Deea Trans Ltd | Transport & logistics | 2022 |
| Deeb Logistics Ltd | Transport & logistics | 2022 |
| Deed Consulting Limited | Professional & scientific | 2006 |
| Deedee Foods Ltd | Wholesale & retail | 2026 |
| Deekshu Properties Ltd | Real estate | 2024 |
| Deel Services Limited | Administrative & support | 2020 |
| Deemar Holding Ltd | Financial services | 2020 |
| Deen Autos Ltd | Wholesale & retail | 2014 |
| Deen Contractors Limited | Other services | 2006 |
| Deen Creative Studios Ltd | Wholesale & retail | 2025 |
| Deen Financial Ministrations Ltd | Professional & scientific | 2020 |
| Deen H Ltd | Real estate | 2022 |
| Deen Housing Ltd | Real estate | 2024 |
| Deen M Ltd | Wholesale & retail | 2020 |
| Deen Midlands Ltd | Real estate | 2020 |
| Deen Payroll Personnel & Services Ltd | Professional & scientific | 2005 |
| Deenbiz Limited | Information & communication | 2021 |
| Deenels Ltd | Health & social care | 2026 |
| Deeney's Removals Limited | Other services | 2016 |
| Deens Boiler & GAS Services Ltd | Construction | 2026 |
| Deens Estates Limited | Real estate | 2026 |
| Deens Health Limited | Health & social care | 2025 |
| Deenstar Ltd | Wholesale & retail | 2026 |
| Deenstar Nutrition Limited | Manufacturing | 2026 |
| Deenz Design UK Limited | Professional & scientific | 2023 |
| Deenz Ltd | Professional & scientific | 2025 |
| Deep and Clean Ltd | Administrative & support | 2020 |
| Deep Byte Limited | Professional & scientific | 2026 |
| Deep Computing Ltd | Information & communication | 2012 |
| Deep Event Catering Limited | Hospitality | 2015 |
| Deep Fried Vibes Ltd | Hospitality | 2021 |
| Deep Green Lawns Ltd | Administrative & support | 2018 |
| Deep Jamaican Bar and Grill Limited | Hospitality | 2021 |
| Deep Jamaican Event Catering Limited | Hospitality | 2025 |
| Deep Media Enterprise Ltd | Hospitality | 2025 |
| Deep Ocean Services Ltd | Administrative & support | 2025 |
| Deep Resonance Care Ltd | Professional & scientific | 2026 |
| Deep Sleep Collections Ltd | Manufacturing | 2026 |
| Deep Traders Ltd | Wholesale & retail | 2020 |
| Deep Vision Tech Limited | Manufacturing | 2021 |
| Deep's Fish & Chips Ltd | Hospitality | 2025 |
| Deepak Fasteners (UK) Limited | Wholesale & retail | 2006 |
| Deepbot Solutions Limited | Information & communication | 2025 |
| Deeper Level Ltd | Administrative & support | 2016 |
| Deeper Thinking Ltd | Professional & scientific | 2019 |
| Deeploc Limited | Health & social care | 2012 |
| Deeply Touching ALL Areas Limited | Administrative & support | 2024 |
| Deepmay Technologies Limited | Information & communication | 2015 |
| Deepy Media Limited | Professional & scientific | 2025 |
| Deer Daddy Limited | Hospitality | 2017 |
| Deer Property Ltd | Real estate | 2020 |
| Deerhurst Gardens (Welford) Management Company Limited | Households | 2023 |
| Deerline Limited | Construction | 2010 |
| Deesom Investments Limited | Real estate | 2020 |
| Defence Psychiatric Reports Ltd | Health & social care | 2025 |
| Defence Security Ltd | Administrative & support | 2020 |
| Defence Solution & Co Ltd | Wholesale & retail | 2025 |
| Defender Roller Shutters Limited | Manufacturing | 2020 |
| Defendia Security FM Limited | Administrative & support | 2024 |
| Defentra Ltd | Wholesale & retail | 2026 |
| Define International Education Technology Company Ltd | Education | 2024 |
| Define Planning and Design Ltd | Professional & scientific | 2007 |
| Defined Edge Ltd | Wholesale & retail | 2020 |
| Definitions Fitness Ltd | Arts & recreation | 2022 |
| Definitive Accountancy Limited | Professional & scientific | 2019 |
| Definitive Broker Services Limited | Financial services | 2018 |
| Definitive Business Services Ltd | Professional & scientific | 2016 |
| Definitive Housing Limited | Real estate | 2025 |
| Definitive Property Solutions Limited | Real estate | 2010 |
| Definitive Supported Housing Ltd | Hospitality | 2023 |
| Defoe Enterprises Limited | Arts & recreation | 2002 |
| Deform Ltd | Professional & scientific | 2022 |
| Defract Design Ltd | Professional & scientific | 2019 |
| Deftx Solutions Limited | Professional & scientific | 2019 |
| Degaan Design Services Ltd | Professional & scientific | 2024 |
| Degrey & Mason Limited | Wholesale & retail | 2016 |
| Degville and Co. Financial Services Ltd | Professional & scientific | 2026 |
| DEI Universe Ltd | Wholesale & retail | 2024 |
| Deiher Ltd | Wholesale & retail | 2023 |
| Deisdaw Healthcare Limited | Health & social care | 2025 |
| Deja Desserts Ltd | Hospitality | 2021 |
| Dekkel Fine Art Publishing Limited | Information & communication | 2004 |
| Deko Tools Ltd | Wholesale & retail | 2024 |
| Dekumzy Entertainment Ltd | Manufacturing | 2026 |
| DEL Bosque Assure Limited | Construction | 2023 |
| DEL Bosque Construct Limited | Construction | 2022 |
| DEL Bosque Global Ltd | Construction | 2022 |
| DEL Bosque Group Limited | Financial services | 2022 |
| DEL Bosque Limited | Construction | 2021 |