| Deanos Transport Ltd | Transport & logistics | 2026 |
| Deanscape Consulting Ltd | Real estate | 2025 |
| Deansgate Furniture Bolton Ltd | Wholesale & retail | 2022 |
| Deansgate Restaurant Ltd | | 2013 |
| Deanworth Limited | Wholesale & retail | 2006 |
| Deavall Associates Ltd | Professional & scientific | 2010 |
| Deb-N-Air Limited | Real estate | 2003 |
| Debbie Marks Holding Limited | Financial services | 2025 |
| Debbie's Delicacies Limited | Hospitality | 2026 |
| Debbigard Ltd | Wholesale & retail | 2011 |
| Debio Limited | Professional & scientific | 2025 |
| Debs Norbury Fitness Ltd | Arts & recreation | 2021 |
| Debt Gladiators Ltd | Administrative & support | 2025 |
| Debt Saver Ltd | Financial services | 2026 |
| Debtscope Software Limited | Information & communication | 2014 |
| Debury Limited | Construction | 2011 |
| Deccan Investment Properties Ltd | Real estate | 2018 |
| December 4 Limited | Construction | 2018 |
| Decent Traders Ltd | Wholesale & retail | 2021 |
| Decibel Alarms Ltd | Administrative & support | 2020 |
| Decipher:It Limited | Information & communication | 2017 |
| Decking Import Ltd | Wholesale & retail | 2016 |
| Declan Stewart Ltd | Administrative & support | 2025 |
| Deco Building Services Ltd | Administrative & support | 2022 |
| DEE Barbers Ltd | Other services | 2025 |
| DEE Enterprise Ltd | Wholesale & retail | 2025 |
| DEE Glass Ltd | Construction | 2019 |
| Deeluxe Property Group Ltd | Real estate | 2022 |
| Deen Design & Print Ltd | Manufacturing | 2024 |
| Deen Group Limited | Transport & logistics | 2015 |
| Deendd Ltd | Transport & logistics | 2024 |
| Deep Blue Restorations Ltd | Administrative & support | 2021 |
| Deep Wide Cognition Limited | Information & communication | 2022 |
| Deeply Vale Estates Limited | Real estate | 1985 |
| Deer Hill Ltd | Professional & scientific | 2022 |
| Deetrade Ltd | Wholesale & retail | 2025 |
| Deeyan's Funeral Services Ltd | Other services | 2022 |
| Define & Shape Limited | Professional & scientific | 2026 |
| Define Cosmetics Limited | Other services | 2023 |
| Define YOU Media Ltd | Information & communication | 2021 |
| Deibe Consulting Limited | Information & communication | 2015 |
| Deighan's Funeral Parlour Ltd | Other services | 2014 |
| Deighan's Holdings Limited | Real estate | 2022 |
| Dekkoyo Limited | Information & communication | 2023 |
| Dekon Projects Limited | Construction | 2018 |
| Dekoning Leisure Group Ltd | Arts & recreation | 2000 |
| DEL Capo Bolton Ltd | Hospitality | 2022 |
| DEL Capo Grill Ltd | Hospitality | 2019 |
| Delamere Holdings Ltd | Real estate | 2015 |
| Delanaserv Limited | Construction | 2019 |
| Delarc Limited | Information & communication | 2022 |
| Delcour Ltd | Transport & logistics | 2024 |
| Delicate Ltd | Wholesale & retail | 2024 |
| Delicaters Ltd | Hospitality | 2015 |
| Delight Technology Consultancy Limited | Information & communication | 2021 |
| Delish a Taste of Home Ltd | Hospitality | 2025 |
| Delitaly Limited | Hospitality | 2019 |
| Delivery App Limited | Transport & logistics | 2023 |
| Delph Brook Properties Ltd | Construction | 2026 |
| Delph Property Ltd | Construction | 2021 |
| Delta E&T Ltd. | Manufacturing | 2024 |
| Delta Motors Ltd | Wholesale & retail | 2025 |
| Delta One Autos Limited | Wholesale & retail | 2023 |
| Delta Vehicle Solutions Limited | Wholesale & retail | 2024 |
| Delta Vent Limited | Construction | 2026 |
| Delto Payroll Services Ltd | Professional & scientific | 2021 |
| Delux Travel Ltd | Transport & logistics | 2025 |
| Deluxe Paint & Deco Ltd | Construction | 2025 |
| Deluxe Rides Ltd | Arts & recreation | 2018 |
| Deluxe Strands Ltd | Wholesale & retail | 2025 |
| Delves Propco LLP | | 2025 |
| Demeak Limited | Health & social care | 2018 |
| Demidov Centre of Acting Studies Ltd | Education | 2026 |
| Demolition Consultants Ltd | Construction | 2019 |
| Demonstrable Ltd | Information & communication | 2017 |
| Dempsey Medical Ltd | Health & social care | 2023 |
| Demure Online Ltd | Wholesale & retail | 2025 |
| DEN Consulting Ltd | Professional & scientific | 2026 |
| Denchem Limited | Wholesale & retail | 1978 |
| Deniji Limited | Health & social care | 2025 |
| Denning Estates Ltd | Real estate | 2023 |
| Denning Investments Ltd | Real estate | 2015 |
| Denning Trading Ltd | Wholesale & retail | 2023 |
| Dennison Petrochem Ltd | Professional & scientific | 2023 |
| Denowsielectservices Ltd | Construction | 2024 |
| Densal Global CIC | Professional & scientific | 2023 |
| Densupply Ltd | Other services | 2024 |
| Dent Detail Limited | Wholesale & retail | 2020 |
| Dent Solutions Limited | Administrative & support | 2009 |
| Dent Specialist Limited | Wholesale & retail | 2003 |
| Dentaflow Holdings Limited | Health & social care | 2025 |
| Dental Facial Artisan Ltd | Health & social care | 2023 |
| Dentech IT Solutions Ltd | Information & communication | 2024 |
| Dentrain Professionals Ltd | Education | 2011 |
| Dents Removed Limited | Wholesale & retail | 2018 |
| Denver Interiors Limited | Extraterritorial | 2015 |
| Denysp Ltd | Transport & logistics | 2025 |
| Depends Data Protection Limited | Information & communication | 2023 |
| Deploy Ahoy Limited | Information & communication | 2022 |
| Derby Firelec Limited | Construction | 2007 |