| DSP 2 Limited | Wholesale & retail | 2025 |
| DSP Accountants Limited | Professional & scientific | 2004 |
| DSP Aesthetics Ltd | Health & social care | 2024 |
| DSP Construction Holdings Limited | Professional & scientific | 2015 |
| DSP Construction Management (Midlands) Limited | Construction | 2015 |
| DSP Construction Management Ltd | Construction | 2007 |
| DSP Construction Management Retail Limited | Construction | 2025 |
| DSP Elite Homes Ltd | Real estate | 2025 |
| DSP Food & Wine Ltd | Wholesale & retail | 2020 |
| DSP Fort Holdings Limited | Professional & scientific | 2025 |
| DSP Property Investment Ltd | Real estate | 2024 |
| DSP Transport Services Ltd | Transport & logistics | 2025 |
| DSR Development Ltd | Construction | 2018 |
| DSR Leadership Ltd | Professional & scientific | 2024 |
| DSR Properties Ltd | Real estate | 2025 |
| DSR Security Services Limited | Administrative & support | 2021 |
| DSR Vision Ltd | Wholesale & retail | 2025 |
| Dsra Properties Limited | Real estate | 2024 |
| Dsrptive Ltd | Extraterritorial | 2022 |
| DSS Trades Ltd | Wholesale & retail | 2026 |
| Dssm Retail Limited | Wholesale & retail | 2021 |
| DST Enterprises Ltd | Information & communication | 2025 |
| Dstar Ventures Ltd | Hospitality | 2023 |
| Dstyles Healthcare Limited | Health & social care | 2015 |
| DSV Euroservices PC | | 2018 |
| DSV Training & Education Services Limited | Education | 2015 |
| DSY Properties Ltd | Real estate | 2022 |
| DSZ Holdings Ltd | Manufacturing | 2025 |
| DT (P80) Limited | Real estate | 2022 |
| DT - Properties Midlands Limited | Real estate | 2025 |
| DT Care Services Ltd | Health & social care | 2011 |
| DT Digital Stores Ltd | Wholesale & retail | 2026 |
| DT Health and Fitness Coaching Ltd | Education | 2025 |
| DT Hertford Limited | Hospitality | 2024 |
| DT Industrial Contractors Limited | Administrative & support | 2015 |
| DT Seals (UK) Ltd | Manufacturing | 1996 |
| DT Works Ltd | Professional & scientific | 2025 |
| DTC Electrical Ltd | Construction | 2020 |
| DTD Ltd | Wholesale & retail | 2026 |
| Dtech Influentials Limited | Information & communication | 2023 |
| DTF Studio Print Limited | Manufacturing | 2025 |
| DTI Transport Limited | Manufacturing | 2019 |
| DTL Properties Ltd | Real estate | 2020 |
| DTM Payroll Ltd | Administrative & support | 2022 |
| DTP Property Ltd | Real estate | 2018 |
| Dtpf Ltd | Health & social care | 2014 |
| Dtrd Ltd | Real estate | 2004 |
| DTS Investment (Bicester) Ltd | Real estate | 2025 |
| DTS Investment (Scott Arms) Ltd | Real estate | 2025 |
| DTS Mobile Tyres Services Limited | Other services | 2016 |
| DTS Modern Classics Limited | Wholesale & retail | 2026 |
| DUA & DUA (Nottingham) Limited | Real estate | 2015 |
| DUA & DUA Medical Limited | Health & social care | 2010 |
| DUA (Birmingham) Ltd | Wholesale & retail | 2023 |
| DUA Advisory Limited | Professional & scientific | 2012 |
| DUA Exports Limited | Wholesale & retail | 2024 |
| DUA Housing Limited | Real estate | 2026 |
| DUA International Ltd | Wholesale & retail | 2020 |
| DUA Real Estate Ltd | Real estate | 2024 |
| Dua-Patel Optometry Limited | Administrative & support | 2024 |
| Duagh Property Limited | Real estate | 2017 |
| Dual Enterprises Limited | Wholesale & retail | 2019 |
| Dual Health Care Limited | Health & social care | 2022 |
| Dual Homes Limited | Real estate | 2024 |
| Dual Keys Ltd | Households | 2025 |
| Dual Management Limited | Real estate | 2012 |
| Dual Metallising (Birmingham) Ltd | Manufacturing | 2025 |
| Dual Roofing (London) Limited | Construction | 1983 |
| Dualcarbon Holdings Ltd | Information & communication | 2024 |
| Dualcarbon Ltd | Information & communication | 2019 |
| Duale Transport Company 1702 Limited | Transport & logistics | 2025 |
| Duale Travel &Tourism Ltd | Administrative & support | 2026 |
| Duango Ltd | Wholesale & retail | 2023 |
| DUB Transmissions Recordings Limited | Arts & recreation | 2000 |
| Dubai Caffee Ltd | Hospitality | 2026 |
| Dubai Food Restaurant Ltd | Hospitality | 2025 |
| Dubai Grill House Limited | Hospitality | 2026 |
| Dubai Jackpot Shopping Limited | Wholesale & retail | 2022 |
| Dubai Jewellers Limited | Wholesale & retail | 2004 |
| Dubai Lounge Ltd | Hospitality | 2025 |
| Dubai Perfumery & Clothing Ltd | Wholesale & retail | 2026 |
| Dubai Perfumery Ltd | Wholesale & retail | 2023 |
| Dubai Sofas Ltd | Manufacturing | 2024 |
| Dubais(Uk) Ltd | Administrative & support | 2014 |
| Dubb & Pall Limited | Manufacturing | 2009 |
| Dube Care Limited | Health & social care | 2017 |
| Dubem Ltd | Transport & logistics | 2016 |
| Dubtap Building Services Ltd | Construction | 2019 |
| Ducatt Heating Company Limited(The) | Construction | 1919 |
| Duchis Enterprice Ltd | Information & communication | 2014 |
| Ducklings Day Nursery Limited | Health & social care | 2021 |
| Ducks Bath Ltd | Real estate | 2018 |
| Duco Sports Ltd | Administrative & support | 2024 |
| Duco UK Limited | Construction | 2009 |
| Duda Limited | Wholesale & retail | 2025 |
| Dudau Group Ltd | Manufacturing | 2025 |
| Duddeston MOT Repair Centre Ltd | Wholesale & retail | 2021 |
| Duddestonmotcentre Ltd | Wholesale & retail | 2018 |
| Dudion Build Ltd | Construction | 2022 |
| Dudley Car Wash Five Star Ltd | Administrative & support | 2025 |