| Douglas Media Holding Limited | Administrative & support | 2017 |
| Douglas Neurosciences Limited | Health & social care | 2013 |
| Douglas Powell Investments Limited | Professional & scientific | 2017 |
| Douglas Powell Property Management Limited | Real estate | 2025 |
| Douglas Vale Residents Management Company Limited | Households | 2026 |
| Dougron Investments Ltd | Manufacturing | 2025 |
| Doulli Ltd | Hospitality | 2025 |
| Dounic Unisex Salon Ltd | Other services | 2026 |
| DOV Home Improvements Limited | Construction | 2023 |
| Dove and Lilly Limited | Manufacturing | 2025 |
| Dove Boutique Ltd. | Wholesale & retail | 2022 |
| Dove House Laundrette Services Limited | Other services | 2021 |
| Dove Properties & Investments Ltd | Real estate | 2022 |
| Dovecote WB Holdings Limited | Hospitality | 2026 |
| Dovedale Investments Ltd | Real estate | 1994 |
| Dovehouse Company Developments Limited | Real estate | 2020 |
| Dovehouse F&C Ltd | Hospitality | 2024 |
| Dovehouse Fish Bar Limited | Professional & scientific | 2022 |
| Dover Street 1 Ltd | Real estate | 2025 |
| Dovetails of Kings Norton Ltd | Construction | 2021 |
| DOW Health Solutions Limited | Health & social care | 2021 |
| Dowler G C Limited | Professional & scientific | 2004 |
| Dowler Holdings Limited | Financial services | 2004 |
| Downes & Blue Ltd | Other services | 2019 |
| Downing Enforcement Ltd | Administrative & support | 2018 |
| Downtown Real Estates Limited | Real estate | 2021 |
| Downunder Geosolutions (UK) Limited | Professional & scientific | 2014 |
| Doxab Company Limited | Health & social care | 2024 |
| Doxim Trans Limited | Transport & logistics | 2015 |
| Doyle Developers Ltd | Hospitality | 2019 |
| Doyle Dwellings Ltd | Real estate | 2021 |
| Doyles Accounting Limited | Professional & scientific | 2012 |
| DP Accounting Services Limited | Professional & scientific | 2008 |
| DP Building Systems Ltd | Wholesale & retail | 1998 |
| DP Electrical Solutions (Midlands) Ltd | Construction | 2025 |
| DP Engine Parts UK Ltd | Wholesale & retail | 2017 |
| DP Fitted Bedrooms Ltd | Manufacturing | 2019 |
| DP Fitted Interiors Ltd | Professional & scientific | 2024 |
| DP Homes 9 Ltd | Real estate | 2023 |
| DP Leisure (Mids) Ltd | Hospitality | 2022 |
| DP New Quay Limited | Hospitality | 2022 |
| DP Property & Maintenance Services Limited | Construction | 2014 |
| DP Property (Digbeth) Ltd | Construction | 2017 |
| DP Realisations Limited | Manufacturing | 1976 |
| DP Security Installations Ltd | Administrative & support | 2022 |
| DPA Equity Ltd | Real estate | 2017 |
| DPB Pipeline Services Limited | Construction | 2008 |
| Dperfectrealestate Limited | Real estate | 2024 |
| Dpexpress Ltd | Wholesale & retail | 2026 |
| DPF Cleaning Expert Ltd | Wholesale & retail | 2025 |
| DPF Cleaning Services Ltd | Wholesale & retail | 2017 |
| DPF Logistics Ltd | Transport & logistics | 2017 |
| DPF Refurbishment Services Ltd | Wholesale & retail | 2026 |
| DPG Inspection Services Ltd | Public administration | 2025 |
| DPG Properties Limited | Real estate | 2013 |
| Dplusu Ltd | Administrative & support | 2016 |
| DPM Leisure Limited | Hospitality | 2015 |
| DPM West Midlands Ltd | Construction | 2015 |
| Dpmo Records Ltd | Administrative & support | 2021 |
| DPN Holdings Ltd | Financial services | 2014 |
| DPR Asset Investments Ltd | Real estate | 2020 |
| DPR Asset Ltd | Professional & scientific | 2025 |
| DPR Security Solutions Ltd | Administrative & support | 2025 |
| Dpr-Trading UK Ltd | Transport & logistics | 2025 |
| DPS Digi Pro Studios Ltd | Information & communication | 2018 |
| DPS Ventures Limited | Administrative & support | 2022 |
| DPT Lettings Ltd | Real estate | 2026 |
| Dpuk Assisted Living CIC | Hospitality | 2020 |
| DPW Consultancy Services Ltd | Professional & scientific | 2021 |
| DPW Mammography Limited | Health & social care | 2024 |
| Dpxg Rental Management Ltd | Real estate | 2025 |
| DQ Group Limited | Construction | 2025 |
| DQ Rule Books Ltd | Information & communication | 2011 |
| Dqdiagnostics Limited | Wholesale & retail | 2026 |
| DQF Advisors Limited | Professional & scientific | 2024 |
| DQF Investments Group Limited | Real estate | 2026 |
| DQF Property Investments Limited | Real estate | 2026 |
| DR a Fahmy Urology Services Limited | Health & social care | 2017 |
| DR a K Mann Ltd | Health & social care | 2025 |
| DR a Mahmood Consultancy Ltd | Health & social care | 2023 |
| DR a Z Dental Ltd | Health & social care | 2025 |
| DR Aamna Adel Ltd | Health & social care | 2024 |
| DR Abdul Ltd | Health & social care | 2026 |
| DR Abdul Saboor Ltd | Health & social care | 2022 |
| DR Aesthetik Ltd | Administrative & support | 2023 |
| DR Ahmed Ltd | Health & social care | 2021 |
| DR AJH Limited | Health & social care | 2026 |
| DR AK Dermatology Limited | Health & social care | 2023 |
| DR Al-Baaj Limited | Health & social care | 2013 |
| DR Ammar Heart Clinic Ltd | Health & social care | 2026 |
| DR Aneela Aesthetics Ltd | Other services | 2020 |
| DR Angela Mooney Ltd | Health & social care | 2018 |
| DR Antonelli Ltd | Health & social care | 2022 |
| DR Antoni Calmon UK Ltd | Health & social care | 2019 |
| DR Assa Ltd | Health & social care | 2025 |
| DR Ayaz Ghani Ltd | Real estate | 2009 |
| DR Balavigna Ltd | Other services | 2025 |
| DR Barakat Medico-Legal Ltd | Health & social care | 2018 |
| DR Boghossian Ltd | Health & social care | 2025 |
| DR Build Ltd | Administrative & support | 2025 |