| Dice Goblin Ltd | Wholesale & retail | 2020 |
| Diceminster Limited | Real estate | 1987 |
| DID Technologies Limited | Information & communication | 2024 |
| Didgeridoodles Ltd | Wholesale & retail | 2025 |
| DIDICE972 Limited | Households | 2020 |
| Didun Foods Ltd | Manufacturing | 2025 |
| Diem Marshall Wealth Management Limited | Financial services | 2018 |
| DIESEKT3 Limited | Professional & scientific | 2018 |
| Diesel Technologies International Limited | Wholesale & retail | 2018 |
| Different Strokes (Trustees) Limited | Health & social care | 2002 |
| Diggermasters Ltd | Construction | 2024 |
| Digi Vape Vending Limited | Wholesale & retail | 2023 |
| Digidata Ltd | Information & communication | 2025 |
| Digilams Ltd | Wholesale & retail | 2023 |
| Digileap Ltd | Professional & scientific | 2017 |
| Diginit Solutions Ltd | Information & communication | 2023 |
| Digirize Properties Limited | Real estate | 2021 |
| Digisign Limited | Information & communication | 2005 |
| Digital AGE Consulting Limited | Information & communication | 2018 |
| Digital AGE Professionals Limited | Wholesale & retail | 2019 |
| Digital Calabash Ltd | Professional & scientific | 2024 |
| Digital City Solutions Limited | Information & communication | 2021 |
| Digital Commerce Solutions Ltd | Information & communication | 2018 |
| Digital Expert Consulting UK Limited | Extraterritorial | 2024 |
| Digital Image Booth Limited | Manufacturing | 2017 |
| Digital Images Limited | Manufacturing | 2003 |
| Digital Insights Consultancy Limited | Information & communication | 2019 |
| Digital Lean Exchange Ltd | Professional & scientific | 2025 |
| Digital Leverage AI Ltd | Information & communication | 2026 |
| Digital Marketing I Ltd | Professional & scientific | 2012 |
| Digital Media Mavens UK Limited | Information & communication | 2017 |
| Digital Minds International Limited | Professional & scientific | 2017 |
| Digital Motives Global Ltd | Information & communication | 2025 |
| Digital Reporting Strategies Limited | Professional & scientific | 2011 |
| Digital Sales Solutions Limited | Information & communication | 2019 |
| Digital Scaling Solutions Limited | Information & communication | 2022 |
| Digital Tech Talent Ltd | Administrative & support | 2020 |
| Digital World Consulting Ltd | Information & communication | 2011 |
| Digitaleagle Software Solutions Ltd | Information & communication | 2020 |
| Digitally Empowered Limited | Professional & scientific | 2021 |
| Digitalmagix Limited | Transport & logistics | 2015 |
| Digitalsage Limited | Wholesale & retail | 2025 |
| Digitek Computer Products UK Limited | Wholesale & retail | 2005 |
| Digivale Limited | Information & communication | 2021 |
| Digress Media Limited | Information & communication | 2025 |
| Diiwon Consulting Ltd | Information & communication | 2024 |
| Dijon Design Holdings Limited | Professional & scientific | 2002 |
| Dijon Ferrymans Limited | Real estate | 2019 |
| Dilan KP Limited | Professional & scientific | 2026 |
| Dilan Mistry Estates Ltd | Real estate | 2025 |
| Diligence Property Ltd | Real estate | 2022 |
| Diligent Care Provider Limited | Health & social care | 2023 |
| Dilmotion Control Limited | Administrative & support | 2013 |
| Dilmotion Control Property Ltd | Real estate | 2017 |
| DIM Decorators Ltd | Construction | 2018 |
| Dimora Developments Ltd | Wholesale & retail | 2018 |
| Dineverse Ltd. | Wholesale & retail | 2025 |
| Dino Salvatore Roofing Ltd | Construction | 2011 |
| Dino's Famous Limited | Administrative & support | 2017 |
| Dinoboy Limited | Information & communication | 2017 |
| Dinoco Ltd | Financial services | 2024 |
| Dinova London Ltd | Manufacturing | 2024 |
| Dionysus Media and Events (DME) Group Ltd | Administrative & support | 2024 |
| Dipili (DPL) UK Ltd | Real estate | 2019 |
| Direct Accident Claims Management Ltd | Administrative & support | 2017 |
| Direct Link Computer Consultants Limited | Information & communication | 1998 |
| Direct Mirror Doors (NW) Ltd | Wholesale & retail | 2004 |
| Direct Vehicle Transport Ltd | Transport & logistics | 2025 |
| DIRECT03 Limited | Administrative & support | 2014 |
| Directcharger Ltd | Other services | 2024 |
| Directed Solutions Ltd | Arts & recreation | 2011 |
| Directflight Limited | Professional & scientific | 1983 |
| Directly Financial Ltd | Extraterritorial | 1993 |
| Dirty Bones IP Ltd | Administrative & support | 2026 |
| DIS Trading Limited | Wholesale & retail | 2021 |
| Disahara Ltd | Wholesale & retail | 2021 |
| Discentes Digital Ltd | Information & communication | 2013 |
| Disclosure Hub Limited | Information & communication | 2014 |
| Disco Bingo Milton Keynes Ltd | Administrative & support | 2023 |
| Disco Bingo MK Ltd | Wholesale & retail | 2023 |
| Disco Whale Limited | Arts & recreation | 2025 |
| Disco-Bingo-Uk Ltd | Administrative & support | 2025 |
| Discount Domestic Appliances Ltd | Wholesale & retail | 2023 |
| Discover Beauty Aesthetics Ltd | Other services | 2023 |
| Discover Tyres Ltd | Wholesale & retail | 2018 |
| Discovery Apartment Owners Association Limited | Other services | 2010 |
| Discreet Property Sales Limited | Real estate | 2025 |
| Dishfix Ltd | Other services | 2024 |
| Disocurl Hair Stylists Limited | Other services | 1962 |
| Display Creatives UK Efrbs Limited | Administrative & support | 2009 |
| Display Creatives UK Limited | Professional & scientific | 1996 |
| Display Rights Limited | Extraterritorial | 2021 |
| Distinct Garden Rooms Ltd | Construction | 2023 |
| Distribution Van Services Limited | Transport & logistics | 2011 |
| Ditto.Id Ltd | Information & communication | 2025 |
| Dittofi Ltd | Information & communication | 2020 |
| Diva Business Ltd | Health & social care | 2021 |
| Diva Couture Traders Ltd | Administrative & support | 2019 |
| Divadonna Ltd | Financial services | 2024 |
| Divergent Motion Dance Ltd | Other services | 2024 |