| DS Aujla Construction Ltd | Construction | 2025 |
| DS Consulting & Property Services Limited | Real estate | 2025 |
| DS Environmental Services Limited | Professional & scientific | 2016 |
| DS Property & Lettings Ltd | Real estate | 2025 |
| DS XR Ltd | Information & communication | 2023 |
| Ds-X-Tm External Transport Solutions Ltd | Transport & logistics | 2025 |
| DS1 Construction Limited | Construction | 2014 |
| DS1 Ventures Ltd | Wholesale & retail | 2024 |
| DS2 Transport Limited | Transport & logistics | 2014 |
| DS8 Consulting Limited | Administrative & support | 2008 |
| DSB Housekeeping Limited | Administrative & support | 2022 |
| DSB Houses Limited | Real estate | 2026 |
| DSB Properties Ltd | Real estate | 2023 |
| DSB Transport Limited | Transport & logistics | 2020 |
| DSC Care Ltd | Health & social care | 2015 |
| DSH Music & Events Ltd | Information & communication | 2026 |
| Dska Properties Limited | Real estate | 2022 |
| Dsmart Ltd | Wholesale & retail | 2026 |
| DSO Limited | Hospitality | 2026 |
| Dssmove Limited | Information & communication | 2012 |
| Dsvr Limited | Transport & logistics | 2020 |
| DT Drywall Ltd | Construction | 2026 |
| DTA Realty Limited | Real estate | 2023 |
| Dtech SEO Services Ltd | Professional & scientific | 2025 |
| DTF Logistics Ltd | Transport & logistics | 2022 |
| DTS Birmingham Ltd | Real estate | 2021 |
| DUA for Education (DFE) Ltd | Education | 2019 |
| Dual Holdings Limited | Financial services | 2022 |
| Dubfather Limited | Wholesale & retail | 2012 |
| Dubs Care Ltd | Health & social care | 2019 |
| Duca Driver Limited | Transport & logistics | 2017 |
| Ducini Limited | Wholesale & retail | 2022 |
| Duck Seller Ltd | Wholesale & retail | 2024 |
| Duckdown Gifts Limited | Wholesale & retail | 2021 |
| Dudley Motor Repairs Limited | Wholesale & retail | 2020 |
| Dudley Motor Spares Limited | Wholesale & retail | 2004 |
| Dudley Projects Ltd | Real estate | 2026 |
| Dudley Road Supermarket Limited | Wholesale & retail | 2023 |
| Dudleyarms PUB Company Ltd | Hospitality | 2019 |
| Duell Homes Limited | Construction | 2022 |
| Duell Properties Limited | Real estate | 2022 |
| Duell Rentals Limited | Real estate | 2022 |
| Duffster Ltd | Information & communication | 2026 |
| Duhra Property Leasing Ltd | Real estate | 2020 |
| Dulai Transport Ltd | Transport & logistics | 2026 |
| Dulkoo Properties Limited | Real estate | 2017 |
| Dumez E Limited | Health & social care | 2020 |
| Dumont Properties Limited | Real estate | 2021 |
| Dunbay and Associates Limited | Professional & scientific | 2025 |
| Duncan Homes Ltd | Real estate | 2025 |
| Dundee's Cakebox Ltd. | Wholesale & retail | 2025 |
| Dunedin Complex Care Limited | Health & social care | 2022 |
| Dunn & Dusted Services Ltd | Administrative & support | 2025 |
| Dunn Project Services Ltd | Professional & scientific | 2023 |
| Dunn Psychology Ltd | Education | 2019 |
| Dunnie Del’S Couture Ltd | Professional & scientific | 2026 |
| Dunstall Hill Garage Ltd | Wholesale & retail | 2025 |
| Dunstall Park Garages Limited | Wholesale & retail | 1948 |
| Dunster Investments Limited | Real estate | 2025 |
| Dunycollections Limited | Wholesale & retail | 2026 |
| Duolearner Ltd | Education | 2024 |
| Duplex Trading Limited | Wholesale & retail | 2023 |
| Dura Building Contractors Limited | Construction | 2018 |
| Dura Developments Limited | Real estate | 2023 |
| Durham Daisy Hill Real Estate Limited | Real estate | 2026 |
| Dust Studios Ltd | Information & communication | 2024 |
| Dutchbridge Investments Limited | Real estate | 2026 |
| DUY HO Ltd | Other services | 2023 |
| DV Academy Limited | Education | 2026 |
| DVB Logistics Ltd | Transport & logistics | 2024 |
| Dvpp Consulting Limited | Information & communication | 2023 |
| DVS Hand Car Wash and Valeting Centre Ltd | Wholesale & retail | 2015 |
| Dvse UK Ltd | Transport & logistics | 2025 |
| DW Property Rentals Limited | Real estate | 2016 |
| Dwellinx Ltd | Real estate | 2024 |
| DWM Accountants LLP | | 2011 |
| DX Specialist Cars Ltd | Extraterritorial | 2024 |
| Dxpro Ltd | Administrative & support | 2026 |
| DXV Cleaning Service Ltd | Administrative & support | 2025 |
| DXX Limited | Construction | 2026 |
| DY Assist Limited | Manufacturing | 2015 |
| DY Three Contract Furniture Limited | Wholesale & retail | 2013 |
| Dydigaf Ltd | Manufacturing | 2025 |
| Dyhb Ltd | Professional & scientific | 2021 |
| Dylmax Ltd | Financial services | 2015 |
| Dynamic Plant & Services Ltd | Administrative & support | 2024 |
| Dynamic Resonance Ltd | Information & communication | 2022 |
| Dynamiq Motor Company Ltd | Wholesale & retail | 2022 |
| Dynamis Wholesale Limited | Wholesale & retail | 2024 |
| Dynasty Global Solutions Limited | Information & communication | 2025 |
| D’Glam Services Ltd | Hospitality | 2025 |
| E & I Investments Ltd | Financial services | 2020 |
| E & T Ventures Ltd | Other services | 2026 |
| E D M Contracts Limited | Information & communication | 2022 |
| E K M Legal Services Ltd | Professional & scientific | 2018 |
| E M Care Services Ltd | Health & social care | 2017 |
| E P Metals Limited | Wholesale & retail | 2020 |
| E Skips Limited | Professional & scientific | 2018 |
| E&A&M Ltd | Transport & logistics | 2023 |
| E&G Products Limited | Wholesale & retail | 2019 |