| Dwlr Furniture Ltd | Wholesale & retail | 2020 |
| DWM OPS Ltd | Transport & logistics | 2025 |
| DWR Logistics Ltd | Transport & logistics | 2019 |
| DWS Security Ltd | Administrative & support | 2018 |
| Dwsp Limited | Real estate | 2012 |
| Dwyer MEP Limited | Construction | 2025 |
| DX Express Ltd | Hospitality | 2025 |
| DX Grill Limited | Hospitality | 2026 |
| Dxb-Uk Ltd | Manufacturing | 2026 |
| DXG Ventures T/A Human Magic Ltd | Professional & scientific | 2026 |
| DXP Logistics Limited | Transport & logistics | 2021 |
| DY Accountancy Ltd | Professional & scientific | 2025 |
| DY Insights Ltd | Information & communication | 2024 |
| DY Stores Ltd | Wholesale & retail | 2023 |
| Dy-Pack (UK) Limited | Other services | 1994 |
| DYE & Co Limited | Hospitality | 2023 |
| DYH International Group Limited | Wholesale & retail | 2025 |
| Dyke Alehouse Limited | Hospitality | 2021 |
| Dylan Boutique Ltd | Wholesale & retail | 2025 |
| Dylan Residential Ltd | Real estate | 2019 |
| Dylan Town Limited | Hospitality | 2024 |
| Dylans Developments Solutions Limited | Construction | 2024 |
| DYM Estates Ltd | Real estate | 2019 |
| Dymant Holdings Limited | Financial services | 2022 |
| Dymant Limited | Professional & scientific | 2011 |
| Dymond Cars LLP | | 2010 |
| Dympi Ltd | Information & communication | 2021 |
| Dyna Prime Ltd | Wholesale & retail | 2025 |
| Dynacomp Ltd | Professional & scientific | 2024 |
| Dynaluxx Lighting International Ltd | Wholesale & retail | 2021 |
| Dynamic Central Ltd | Health & social care | 2020 |
| Dynamic Choices Limited | Wholesale & retail | 2025 |
| Dynamic Clean Maintenance Group Ltd | Extraterritorial | 2026 |
| Dynamic Clean Pros Ltd | Extraterritorial | 2026 |
| Dynamic Cleaning DUO Ltd | Manufacturing | 2026 |
| Dynamic Climate Solutions Ltd | Construction | 2026 |
| Dynamic Core Ltd | Wholesale & retail | 2025 |
| Dynamic D Services Ltd | Health & social care | 2026 |
| Dynamic Daily Care Pros Ltd | Extraterritorial | 2026 |
| Dynamic Daily Pros Ltd | Extraterritorial | 2026 |
| Dynamic Delivery Pros Ltd | Extraterritorial | 2026 |
| Dynamic DUO Solutions Ltd | Transport & logistics | 2025 |
| Dynamic Floors Limited | Wholesale & retail | 2020 |
| Dynamic FM Ltd | Construction | 2009 |
| Dynamic for International Services Limited | Extraterritorial | 2026 |
| Dynamic FS Ltd | Administrative & support | 2018 |
| Dynamic Growth Advisors for Services Ltd | Extraterritorial | 2026 |
| Dynamic Growth Investment Team Ltd | Extraterritorial | 2026 |
| Dynamic Input Limited | Professional & scientific | 2003 |
| Dynamic Installations Ltd | Information & communication | 2010 |
| Dynamic Interiors and Deco Ltd | Construction | 2025 |
| Dynamic Investor Relations Limited | Professional & scientific | 2018 |
| Dynamic Marketing Solutions Ltd | Administrative & support | 2015 |
| Dynamic Medical Logistics Ltd | Transport & logistics | 1999 |
| Dynamic PLY Lining Limited | Wholesale & retail | 2018 |
| Dynamic Pro 9 Limited | Wholesale & retail | 2020 |
| Dynamic Pro Care Experts Ltd | Extraterritorial | 2026 |
| Dynamic Professionals Group Ltd | Information & communication | 2025 |
| Dynamic Risk Indicator Limited | Administrative & support | 2018 |
| Dynamic School of Performing Arts Limited | Arts & recreation | 2017 |
| Dynamic Shelving Systems Ltd | Wholesale & retail | 2018 |
| Dynamic Signs and Graphics Limited | Manufacturing | 2018 |
| Dynamic Stars Academy CIC | Administrative & support | 2025 |
| Dynamic Top Service Experts Ltd | Extraterritorial | 2026 |
| Dynamic Top Services Ltd | Extraterritorial | 2026 |
| Dynamic Urban Development Enterprise Ltd | Real estate | 2013 |
| Dynamic Water Treatments Ltd | Water & waste | 2021 |
| Dynamics IT Services Limited | Information & communication | 2025 |
| Dynamis Education Ltd | Education | 2016 |
| Dynamis Enterprises Limited | Education | 2006 |
| Dynamis Security Solutions Limited | Extraterritorial | 2007 |
| Dynamite Desserts Ltd | Hospitality | 2023 |
| Dynamix Design & Build Ltd | Construction | 2023 |
| Dynamo Inns LLP | | 2007 |
| Dynamode Security Limited | Professional & scientific | 2014 |
| Dynasty Chinese & Thai Takeaway (Withington) Limited | Hospitality | 2026 |
| Dynasty DNA Properties Limited | Real estate | 2025 |
| Dynasty Energy Limited | Information & communication | 2022 |
| Dynavex Limited | Wholesale & retail | 2025 |
| Dyne Carpet Tile Company Limited | Wholesale & retail | 1990 |
| Dynmc Ltd | Wholesale & retail | 2024 |
| Dynotherm Ltd | Wholesale & retail | 2021 |
| Dyreko Limited | Wholesale & retail | 2021 |
| DYS Oldham Limited | Wholesale & retail | 2015 |
| Dyse Ltd | Professional & scientific | 2017 |
| Dyslexia Ltd | Education | 2019 |
| Dyson & Allen Limited | Construction | 2012 |
| Dyson Building Company Limited | Construction | 2016 |
| Dyson Roofing Limited | Construction | 2018 |
| Dytp Ltd | Wholesale & retail | 2025 |
| DZ Consultants Ltd | Professional & scientific | 2025 |
| DZ Trading Ltd | Wholesale & retail | 2013 |
| Dzairverse Ltd | Information & communication | 2024 |
| Dzark Enterprises Ltd | Manufacturing | 2018 |
| Dze.B Ltd | Other services | 2025 |
| DZN Studios Ltd | Professional & scientific | 2009 |
| Dzome Ltd | Professional & scientific | 2021 |
| Dzvene and Sons Limited | Public administration | 2022 |
| Dêmos HR Solutions Limited | Extraterritorial | 2017 |
| D’Arcy’S Angels Limited | Other services | 2023 |