| Deepinfinity Ltd | Information & communication | 2020 |
| Deepline Ltd | Construction | 2021 |
| Deepline Property Ltd | Real estate | 2025 |
| Deepshah Enterprise Limited | Other services | 2022 |
| Deepu Catering Ltd | Hospitality | 2026 |
| Dees Ventures Limited | Wholesale & retail | 2018 |
| Defence Clothes Ltd | Manufacturing | 2023 |
| Defence Force K9 Ltd | Administrative & support | 2026 |
| Defendx Security Services Ltd | Administrative & support | 2025 |
| Define MED Limited | Manufacturing | 2026 |
| Define With Devinci Limited | Other services | 2021 |
| Defined Estates Ltd | Real estate | 2026 |
| Defined Events Ltd | Hospitality | 2025 |
| Defined Vision Ltd | Health & social care | 2021 |
| Defoxcy Ltd | Information & communication | 2025 |
| Degan & Sons Plumbing Ltd | Construction | 2025 |
| Degh Tegh Ltd | Administrative & support | 2018 |
| Deglet Limited | Other services | 2018 |
| Degreeapprenticemedia Ltd | Information & communication | 2023 |
| Degrey Consultants Ltd | Professional & scientific | 2020 |
| Dehal Investments Ltd | Real estate | 2019 |
| Dek-Co (UK) Ltd | Information & communication | 2009 |
| Dela Fera Investments Limited | Real estate | 2024 |
| Delawala Ltd | Professional & scientific | 2018 |
| Delectia Ltd | Hospitality | 2016 |
| Deleo Rentals Ltd | Real estate | 2024 |
| Delfcroft Hyde Ltd | Other services | 2023 |
| Delfen Services Ltd | Education | 2009 |
| Delhi 6 Limited | Hospitality | 2018 |
| Delhi Darbar Ltd | Professional & scientific | 2004 |
| Delhi Live Ltd | Hospitality | 2024 |
| Delicfood Limited | Hospitality | 2023 |
| Delicious Cupcakes Ltd | Manufacturing | 2020 |
| Delicious Pizza Express Limited | Hospitality | 2015 |
| Delight Kitchen and Bedroom Ltd | Construction | 2023 |
| Delilah Management Corporation Limited | Hospitality | 2023 |
| Delishbites Ltd | Hospitality | 2025 |
| Delivery and Hookah Ltd | Wholesale & retail | 2023 |
| Delivery Network Ltd | Transport & logistics | 2016 |
| Della Continental Limited | Hospitality | 2020 |
| Dellgate Limited | Information & communication | 2013 |
| Delloyds Consultancy Limited | Information & communication | 2015 |
| Delmonte Double Glazing Ltd | Construction | 2006 |
| Delmonte Glazing Ltd | Construction | 2017 |
| Delrose House Limited | Health & social care | 2002 |
| Delrose House Properties Limited | Real estate | 2022 |
| Delrose Management Services Limited | Professional & scientific | 2007 |
| Delroy Ltd | Hospitality | 2026 |
| Dels Laser Workshop Ltd | Manufacturing | 2022 |
| Delta AI Ltd | Health & social care | 2023 |
| Delta Axis Ltd | Wholesale & retail | 2025 |
| Delta Courier Ltd | Transport & logistics | 2023 |
| Delta Drylining Ltd | Financial services | 2019 |
| Delta Dwellings Ltd | Real estate | 2018 |
| Delta Dynamics Ltd | Wholesale & retail | 2019 |
| Delta Facilities Management Ltd | Information & communication | 2018 |
| Delta FM Ltd | Administrative & support | 2025 |
| Delta K9 Ltd | Administrative & support | 2025 |
| Delta Property Investments Limited | Real estate | 2017 |
| Delta Restauration Limited | Construction | 2024 |
| Delta Roofcare Limited | Construction | 2020 |
| Delta Solutions Limited | Information & communication | 2015 |
| Delta Union Food Limited | Other services | 2022 |
| Delta&Lema Ltd | Hospitality | 2024 |
| Deltafocus Ltd | Real estate | 2017 |
| DELTAK9 Security Limited | Administrative & support | 2022 |
| Deltauk Services Ltd | Information & communication | 2017 |
| Delton Contracts Services Ltd | Construction | 2024 |
| Deluscious Catering Ltd | Hospitality | 2016 |
| Delusions of Grandeur Film Ltd | Information & communication | 2025 |
| Deluxe Carpet & Upholstery Experts Ltd | Administrative & support | 2025 |
| Deluxe Chauffeurs Ltd | Transport & logistics | 2007 |
| Deluxe Collection Ltd | Wholesale & retail | 2019 |
| Deluxe Construction Services Ltd | Construction | 2019 |
| Deluxe Drive Chauffeurs Ltd | Transport & logistics | 2024 |
| Deluxe Kitchens and Stone Ltd | Manufacturing | 2024 |
| Deluxe Lounge Bar Coffe Ltd | Hospitality | 2024 |
| Deluxe Nails Ltd | Other services | 2021 |
| Deluxe Travel Hub Limited | Administrative & support | 2024 |
| Delyx Ltd | Construction | 2025 |
| Demetra International Limited | Wholesale & retail | 2020 |
| Demha Ventures Ltd | Real estate | 2019 |
| Demita Ltd | Construction | 2012 |
| Demo Construction Limited | Construction | 2021 |
| Denham Sterry Limited | Information & communication | 2023 |
| Denigab Construction Ltd | Construction | 2025 |
| Denimes Couture Limited | Construction | 2025 |
| Denis Cookies Limited | Hospitality | 2025 |
| Denis Trans Limited | Transport & logistics | 2013 |
| Denitex Limited | Information & communication | 2026 |
| Denmark Accommodation Ltd | Real estate | 2026 |
| Denmark Lounge Ltd | Real estate | 2026 |
| Denning Solicitors Limited | Other services | 2022 |
| Dennis Luke Ltd | Wholesale & retail | 2016 |
| Dennyson Care Limited | Health & social care | 2012 |
| Deno Consultancy Ltd | Information & communication | 2022 |
| Densible Ltd | Information & communication | 2025 |
| Dent Control Limited | Manufacturing | 2009 |
| Dent Hub Smiles Thatcham Ltd | Health & social care | 2026 |
| Dent UK Limited | Wholesale & retail | 2006 |