| DCL (Poole) Limited | Construction | 2005 |
| DCL Holdco Ltd | Transport & logistics | 2025 |
| Dclick Ltd | Information & communication | 2021 |
| DCM 21 Ltd | Construction | 2012 |
| DCM Groceries Ltd | Wholesale & retail | 2023 |
| DCM Group Ltd | Real estate | 2019 |
| DCM Supermarket Ltd | Wholesale & retail | 2019 |
| Dcmbo Limited | Financial services | 2024 |
| DCN Promotions T/A Norman Holdings Ltd | Professional & scientific | 2001 |
| DCN Property Services T/A Rover Homes Ltd | Real estate | 2005 |
| Dcnc Machine Tool Services Ltd | Manufacturing | 2018 |
| DCP Property (Birmingham) Limited | Real estate | 2018 |
| Dcps Properties Limited | Real estate | 2025 |
| DCS Systems Limited | Extraterritorial | 2015 |
| DCT Medical Limited | Real estate | 2014 |
| Dcube Homes Ltd | Real estate | 2025 |
| DCW 96 Ltd | Construction | 2021 |
| DCW Shop.Com Ltd | Information & communication | 2013 |
| DCX Logistics Ltd | Transport & logistics | 2018 |
| DD & P Ltd | Manufacturing | 1998 |
| DD Anak Limited | Arts & recreation | 2025 |
| DD Arts Birmingham Central Ltd | Arts & recreation | 2015 |
| DD Birmingham Ltd | Hospitality | 2025 |
| DD Housing Ltd | Real estate | 2025 |
| DD Live Events Limited | Arts & recreation | 2016 |
| DD Locum Services Ltd | Health & social care | 2017 |
| DD OIL Boiler Service&Spares Ltd | Construction | 2019 |
| DD Pershore RD Ltd | Wholesale & retail | 2022 |
| DD Precast Flooring Ltd | Administrative & support | 2021 |
| DD Property 25 Ltd | Real estate | 2025 |
| DD Triple Glazing Ltd | Construction | 2022 |
| DD Ventilation Services Ltd | Construction | 2010 |
| Dd&Son Distribution Limited | Financial services | 2025 |
| DDA Ltd | Health & social care | 2024 |
| DDB Financial Management Limited | Professional & scientific | 2017 |
| Ddbo (UK) Ltd | Information & communication | 2012 |
| DDD Plastering Ltd | Construction | 2023 |
| DDE Property and Lettings Limited | Real estate | 2026 |
| Ddeza Properties Ltd | Real estate | 2026 |
| DDH Builders Ltd | Construction | 2014 |
| Ddhg 1 Fitness Ltd | Arts & recreation | 2020 |
| DDI Ltd. | Information & communication | 2025 |
| DDL58 Limited | Real estate | 2007 |
| Ddmdeliveries Ltd | Transport & logistics | 2025 |
| DDN Healthcare Limited | Public administration | 2018 |
| Ddnc Ltd | Arts & recreation | 2017 |
| DDP Contracting Ltd | Professional & scientific | 2015 |
| DDP World Limited | Financial services | 2024 |
| Ddroofing Ltd | Construction | 2020 |
| Ddsstechford Ltd | Hospitality | 2025 |
| Ddsutton Ltd | Hospitality | 2020 |
| DE Faire Medical UK Ltd | Manufacturing | 2022 |
| DE Hallenhof LP | | 2017 |
| DE LA Vies Limited | Hospitality | 2026 |
| DE Lacy Fields KM12 Management Company Limited | Households | 2015 |
| DE Luxe Limited | Hospitality | 1989 |
| DE Manchester Limited | Hospitality | 2021 |
| DE Montfort Mews Management Company Limited | Administrative & support | 2002 |
| DE Montfort Square Management Company Ltd | Households | 2007 |
| DE Novo Advisory Limited | Administrative & support | 2013 |
| DE Salis Court Management Limited | Real estate | 2017 |
| DE Tech Rules Ltd | Wholesale & retail | 2025 |
| DE Vries Designs Limited | Administrative & support | 2009 |
| DE Yorkshire Venture Limited | Other services | 2021 |
| De'Courcy & Sons Limited | Construction | 2013 |
| De-Fi Crypto Taxes Ltd | Professional & scientific | 2025 |
| De-Laryea Consult Limited | Professional & scientific | 2026 |
| De-Skribh Ltd | Professional & scientific | 2024 |
| De-Struct (Worcester) Ltd | Water & waste | 2026 |
| De-Trade Limited | Administrative & support | 2015 |
| DEA Inventory & EPC Services Ltd | Real estate | 2013 |
| DEA Investments Services Ltd | Financial services | 2022 |
| Deacon Properties Limited | Real estate | 2002 |
| Deacoy Events Ltd | Wholesale & retail | 2025 |
| Deadframe Media Ltd | Information & communication | 2025 |
| Deadline Property Holdings Limited | Real estate | 2021 |
| Deadly Records Limited | Information & communication | 2025 |
| Deadman P Limited | Transport & logistics | 2025 |
| Deaf Community Independence CIC | Health & social care | 2021 |
| Deaf Cultural Centre (Trading) Limited | Hospitality | 2006 |
| Deaf Explorer CIC | Administrative & support | 2018 |
| Deafping Limited | Information & communication | 2026 |
| Deakin and Francis Limited | Manufacturing | 1919 |
| Deal Core Limited | Wholesale & retail | 2025 |
| Deal Dazzle Ltd | Wholesale & retail | 2025 |
| Deal Digger Ltd | Wholesale & retail | 2015 |
| Deal Drift Trading Ltd | Wholesale & retail | 2026 |
| Deal JOB Ltd | Other services | 2016 |
| Deal Nest WM Ltd | Wholesale & retail | 2026 |
| Deal One Limited | Wholesale & retail | 2020 |
| Deal Savers Ltd | Wholesale & retail | 2023 |
| Deal Shaker Corp Limited | Wholesale & retail | 2017 |
| Deal-Ifydeals Ltd | Wholesale & retail | 2024 |
| Dealer Car Manager Limited | Extraterritorial | 2003 |
| Dealerpal Ltd | Professional & scientific | 2023 |
| Dealertool Limited | Wholesale & retail | 2017 |
| DEALM4KERS Limited | Information & communication | 2019 |
| Dealmart Limited | Wholesale & retail | 2025 |
| Dealrevise Limited | Real estate | 1991 |
| Deals Five Limited | Wholesale & retail | 2025 |