| Devoted Boundless Movers Ltd | Transport & logistics | 2024 |
| Devoted Domestics Ltd | Administrative & support | 2026 |
| Devs Developments Ltd | Construction | 2019 |
| Dewtoni Limited | Agriculture & fishing | 2001 |
| Dewtoni Properties Limited | Real estate | 2012 |
| DEX Automotive Limited | Wholesale & retail | 2022 |
| Dexta Electrical Ltd. | Construction | 2011 |
| Dexter IT Consulting Ltd | Information & communication | 2014 |
| Dexters Kitchen Limited | Hospitality | 2024 |
| DF Beauty Lounge Ltd | Other services | 2026 |
| DF Locksmiths Ltd | Wholesale & retail | 2021 |
| DFL Electrical Limited | Construction | 2015 |
| DG Financial Advice Ltd | Financial services | 2025 |
| DG PUB Management Limited | Hospitality | 2024 |
| DGC Solutions Limited | Wholesale & retail | 2010 |
| DGI Limited | Financial services | 2022 |
| DGI Medical Limited | Health & social care | 2025 |
| DGL Media Ltd | Information & communication | 2010 |
| DGS Accountancy Limited | Professional & scientific | 2024 |
| DGS Property Rentals Limited | Real estate | 2025 |
| DGT Futures Limited | Information & communication | 2019 |
| DH Counselling Ltd | Other services | 2020 |
| DH GAS Services Ltd | Construction | 2019 |
| DH Roof Ltd | Construction | 2025 |
| Dhcs (UK) Limited | Information & communication | 2011 |
| Dhiraj Wholesale Ltd | Wholesale & retail | 2023 |
| Dhisys Limited | Information & communication | 2026 |
| DHJ Cooling Ltd | Energy | 2017 |
| DHM Associates Limited | Professional & scientific | 2014 |
| DHP Solutions Limited | Information & communication | 2012 |
| DHT Plumbing & Heating Ltd | Construction | 2018 |
| Diagnostics Consulting Limited | Health & social care | 2020 |
| Dialogue for Success Limited | Professional & scientific | 2017 |
| Dialysis Cruise Limited | Health & social care | 2015 |
| Diamond Flag Limited | Real estate | 2007 |
| Diamond IT Services Limited | Information & communication | 2008 |
| Diamond Scaffolding Contractors Ltd | Construction | 2013 |
| Diana's Quality Care Ltd | Health & social care | 2023 |
| Diane Shore Ltd | Other services | 2013 |
| Diarydo Ltd | Professional & scientific | 2012 |
| Dice & a Slice Ltd | Hospitality | 2017 |
| Dicie Limited | Wholesale & retail | 2015 |
| Diesel Monkey Ltd | Manufacturing | 2014 |
| Diesse Ltd | Wholesale & retail | 2013 |
| DIG Hire Limited | Administrative & support | 2019 |
| DIG IT UP Groundworks SW Ltd | Construction | 2025 |
| Digby Brothers Ltd | Extraterritorial | 2004 |
| Digby Stone Limited | Extraterritorial | 2013 |
| Digger & Forklift Parts UK Limited | Extraterritorial | 2021 |
| Digger Spares Limited | Extraterritorial | 2021 |
| Digger's Dents Limited | Wholesale & retail | 2007 |
| Digicopy Group Holdings Ltd | Financial services | 2017 |
| Digifybpo Limited | Administrative & support | 2024 |
| Digital Asset Taxation Limited | Professional & scientific | 2026 |
| Digital Creative Group Limited | Information & communication | 2019 |
| Digital Entertainer Limited | Information & communication | 2006 |
| Digital Indentity Limited | Extraterritorial | 2020 |
| Digital Maintenance TAG Ltd | Professional & scientific | 2025 |
| Digital Plan Limited | Professional & scientific | 2020 |
| Digital Product Consulting Ltd | Information & communication | 2017 |
| Digital Residential Limited | Wholesale & retail | 2018 |
| Digital Signal Services Ltd | Professional & scientific | 2024 |
| Digital Stealth Ltd | Information & communication | 2018 |
| Digital Technology Contracts Limited | Information & communication | 1999 |
| Digitax Consultants Limited | Professional & scientific | 2025 |
| Digitech Aerials Limited | Construction | 2007 |
| Digstar Ltd | Administrative & support | 2025 |
| Dillan Kebab Limited | Hospitality | 2025 |
| Dilly at Abbots Ltd | Wholesale & retail | 2009 |
| Dimple’S Kitchen Limited | Hospitality | 2025 |
| Ding Dong Glamping Ltd | Hospitality | 2021 |
| Dino Athan Design Ltd | Professional & scientific | 2015 |
| Dipaula Care Services Ltd | Wholesale & retail | 2019 |
| Diplomatic Guide Services LLP | | 2013 |
| Direct Answers Limited | Education | 2015 |
| Direct Dialogue Ltd | Professional & scientific | 2025 |
| Direct Engineering FAN Services Limited | Professional & scientific | 2004 |
| Direct Fastening Ltd | Wholesale & retail | 2026 |
| Direct Lift Co (UK) Limited | Manufacturing | 2013 |
| Direct Security Consulting Ltd | Administrative & support | 2021 |
| Direct Services Trading Ltd | Information & communication | 2020 |
| Direct Shipping International Limited | Transport & logistics | 2015 |
| Dirty Devil Products Ltd | Wholesale & retail | 2022 |
| Disability 4 Sport C.I.C. | Arts & recreation | 2012 |
| Discount Motors Ltd | Wholesale & retail | 2008 |
| Discount Trading Limited | Wholesale & retail | 2010 |
| Discover More Suffolk Ltd | Information & communication | 2020 |
| Discovery 2 Parts Ltd | Wholesale & retail | 2023 |
| Discovery Collection Limited | Administrative & support | 2003 |
| Discovery Developments Ltd | Construction | 2018 |
| Discrete-Aesthetics (DA) Limited | Other services | 2021 |
| Discuss Publications Limited | Information & communication | 2020 |
| Dishup Limited | Hospitality | 2024 |
| Dissociadid Ltd | Health & social care | 2020 |
| Distortion Group Limited | Financial services | 2017 |
| Divaray Ltd | Transport & logistics | 2022 |
| Dive Confident Limited | Administrative & support | 2021 |
| Diverse Landscapes & Forestry Ltd | Administrative & support | 2025 |
| Divine Care Provider Ltd | Health & social care | 2013 |
| Divine Childcare Ltd | Health & social care | 2014 |