| DA Thomas (Dalton) Limited | Professional & scientific | 2008 |
| DAB Appliances Ltd | Construction | 2018 |
| Dach Group Ltd | Administrative & support | 2024 |
| Dafne Yachting Limited | Extraterritorial | 2023 |
| DAG Civil Landscapes Limited | Construction | 2017 |
| Daifugo Ltd | Information & communication | 2011 |
| Dailammoc Property Investment Ltd | Real estate | 2025 |
| Daily Bull Ltd | Information & communication | 2022 |
| Daily Property Management UK Ltd | Real estate | 2021 |
| Daily Savers (UK) Limited | Wholesale & retail | 2014 |
| Daily Savers Central (UK) Limited | Wholesale & retail | 2017 |
| Daily Savers Investcare UK Ltd | Real estate | 2025 |
| Daily Savers Investments UK Ltd | Financial services | 2024 |
| Daily Savers Local (UK) Limited | Wholesale & retail | 2018 |
| Daily Savers Local Investcare UK Ltd | Real estate | 2025 |
| Daily Savers North (UK) Limited | Wholesale & retail | 2015 |
| Daily Savers Value UK Ltd | Wholesale & retail | 2019 |
| Dailyjlh Limited | Health & social care | 2024 |
| Daisy Club Ltd | Health & social care | 2007 |
| Daisys Dream Cleans Ltd | Administrative & support | 2026 |
| Dales Court Management Company Limited | Households | 1973 |
| Daleshead Construction Limited | Construction | 2025 |
| Dalton Garage Doors Ltd | Construction | 2026 |
| Daly Assessments Ltd | Information & communication | 2018 |
| DAM Group UK Limited | Construction | 2019 |
| Damexa Cooperation Ltd | Real estate | 2025 |
| Damexa Developments Ltd | Construction | 2025 |
| Damexa Holding Ltd | Financial services | 2025 |
| Damexa Homes Ltd | Real estate | 2025 |
| Damexa Hospitality & Leisure Ltd | Hospitality | 2025 |
| Damexa Investments Ltd | Real estate | 2022 |
| Damexa Properties Ltd | Real estate | 2024 |
| Damexa Real Estate Ltd | Real estate | 2025 |
| Damexworth Holdings Limited | Real estate | 2025 |
| Damexworth Property Limited | Real estate | 2025 |
| Damien Gibbs Ltd | Professional & scientific | 2009 |
| Danchris Limited | Wholesale & retail | 1998 |
| Danfo (UK) Limited | Construction | 1992 |
| Dangerous Techniques Limited | Information & communication | 2007 |
| Daniel H Contracting (UK) Limited | Administrative & support | 2018 |
| Daniilcourier Ltd | Transport & logistics | 2026 |
| Danny Brierley TM Ltd | Construction | 2024 |
| Danny Clarkson's Football Academy Ltd | Arts & recreation | 2006 |
| Danson Consulting Limited | Professional & scientific | 2016 |
| Danvers Northwest Ltd | Construction | 2024 |
| Dapa Printing Services Ltd | Manufacturing | 2023 |
| Dapper Group Limited | Professional & scientific | 1997 |
| Darbyshires Appliances Ltd. | Wholesale & retail | 2016 |
| Darius Holdings Limited | Real estate | 2026 |
| Dark Luna Ltd | Professional & scientific | 2019 |
| Dark Therapy Shop Ltd | Wholesale & retail | 2024 |
| Darlie's Destinations Ltd | Real estate | 2022 |
| Darragh Advisers Limited | Professional & scientific | 2021 |
| Darrell Gilmartin Properties Ltd | Real estate | 2020 |
| Dart Dash Ltd | Arts & recreation | 2025 |
| Daruma Group Ltd | Administrative & support | 2020 |
| Darwen & Darwen Ltd | Real estate | 2024 |
| Darwen Developments Ltd | Real estate | 2022 |
| Darwen Group Limited | Construction | 2020 |
| Darwen Property Group Ltd | Real estate | 2016 |
| Darwen Wilson & Webb Ltd | Real estate | 2022 |
| Dash Electronics Limited | Information & communication | 2011 |
| Dash Software Ltd | Information & communication | 2023 |
| Dashford Holmes Ltd | Wholesale & retail | 2025 |
| Data Management Technology Limited | Information & communication | 2007 |
| Data TAU Limited | Information & communication | 2015 |
| Database Solutions Studio Ltd | Financial services | 2015 |
| Datalens Limited | Information & communication | 2025 |
| Datasorted Ltd | Information & communication | 2016 |
| Datom Electrical Ltd | Construction | 2018 |
| Daubsy Limited | Professional & scientific | 2017 |
| Dave Ashworth Citroen Services (NW) Limited | Wholesale & retail | 2024 |
| Dave Leishman Rail Limited | Construction | 2016 |
| Dave Marshall Consultancy Ltd | Professional & scientific | 2010 |
| Dave's Drains and More Ltd | Water & waste | 2024 |
| Daves Tiles Limited | Wholesale & retail | 2024 |
| David Dunn Consulting Limited | Professional & scientific | 2018 |
| David LEE Thomas Construction Limited | Construction | 2022 |
| David LEE Thomas Ltd | Construction | 2021 |
| David O'Farrell Electrical Limited | Mining & quarrying | 2012 |
| David Peters Unisex Salon Limited | Other services | 2012 |
| David Spencer Installations Limited | Professional & scientific | 2005 |
| David Thomas Hair Limited | Other services | 1999 |
| David Tinsley Limited | Extraterritorial | 2003 |
| David Waylett Joinery Services Limited | Construction | 2013 |
| David Williamson Limited | Professional & scientific | 2002 |
| Davidgranum Limited | Professional & scientific | 2014 |
| Davidson Austin Limited | Administrative & support | 2025 |
| Davidsons (Ormskirk) Limited | Wholesale & retail | 1997 |
| Davies Leisure Limited | | 2009 |
| Davies Property Management and Maintenance Ltd | Households | 2025 |
| Dawid Charlikowski Transport Ltd. | Administrative & support | 2013 |
| Dawn & Edward Properties Ltd | Hospitality | 2019 |
| Dawn Attewell Aesthetics Limited | Professional & scientific | 2011 |
| Dawn Clements Floral Couture Ltd | Wholesale & retail | 2015 |
| Dawnwhitt Ltd | Other services | 2019 |
| Dawsylicious Ltd | Wholesale & retail | 2020 |
| DAY-1 Holdings Limited | Financial services | 2025 |
| Dazz's Dazzling Designs Limited | Information & communication | 2019 |
| Dazzling Blinds Ltd | Manufacturing | 2023 |