| Daring Ltd | Wholesale & retail | 2021 |
| Dariont Constructions Ltd | Construction | 2025 |
| Dark Star Capital Ltd | Financial services | 2008 |
| Darlington Consult Limited | Information & communication | 2016 |
| Darren Andrews (Manor Court) Ltd | Households | 2016 |
| Darren Andrews Developments Limited | Construction | 2003 |
| Darren Andrews Group Ltd | Construction | 2014 |
| Darren Andrews Holdings Ltd | Other services | 2016 |
| Darren Andrews Homes Ltd | Construction | 2012 |
| Darren Christopher Rowland Ltd | Extraterritorial | 2025 |
| Darren Trading Limited | Financial services | 2018 |
| Dartmeet Logistics Ltd | Transport & logistics | 2014 |
| Daruma Creative Enterprise Ltd | Wholesale & retail | 2025 |
| DAS Solutions Limited | Professional & scientific | 2017 |
| Dash N Dogs Ltd | Hospitality | 2024 |
| Dashwood Carpentry Ltd | Construction | 2024 |
| Datanet Systems Limited | Information & communication | 2007 |
| Dataset Recruitment Limited | Administrative & support | 2020 |
| David Egerton Limited | Professional & scientific | 2021 |
| David J Riley Engineering Ltd | Manufacturing | 2024 |
| Davington Park (NO 1) Management Company Limited | Households | 2012 |
| Davington Park (NO 2) Management Company Limited | Households | 2013 |
| Davis & Samson Developments Ltd | Construction | 2017 |
| Davis Court RTM Company Limited | Households | 2010 |
| Davlan Holdings Ltd | Real estate | 2021 |
| Davnic Trans Ltd | Transport & logistics | 2024 |
| Davudov Ltd | Construction | 2019 |
| Davyan Carpentry Limited | Construction | 2019 |
| Dawnview Building Limited | Real estate | 2003 |
| DAYAN87 Limited | Health & social care | 2016 |
| Days Defined Ltd | Information & communication | 2020 |
| DB Master Locksmith Ltd | Other services | 2012 |
| DBC 2020 Ltd | Transport & logistics | 2019 |
| DBC Cars Limited | Transport & logistics | 2015 |
| DBD Contracting Limited | Construction | 2012 |
| DBD Distribution Limited | Construction | 1990 |
| DBD EBT Limited | Administrative & support | 2025 |
| DBD Employee Ownership Trust Limited | Administrative & support | 2025 |
| DBD Enterprises Limited | Professional & scientific | 2011 |
| DBF Domos Limited | Real estate | 2022 |
| Dbol Peniel Outreach CIC | Education | 2024 |
| DBS Rail Resourcing Ltd | Construction | 2016 |
| Dbsm Services Ltd | Information & communication | 2017 |
| DC Prime Heating Limited | Construction | 2024 |
| DC Production Partners Limited | Professional & scientific | 2020 |
| DCA Security Systems Limited | Administrative & support | 2008 |
| DCA Trans Limited | Transport & logistics | 2017 |
| DCH Alloys Wheel Refurbishment Tyres and Detailing Ltd | Wholesale & retail | 2026 |
| Dcof Ltd | Information & communication | 2025 |
| Dcvs Trading Ltd | Other services | 2017 |
| DDA Consultancy Ltd | Manufacturing | 2017 |
| DDD Transport Ltd | Transport & logistics | 2025 |
| DDG695 Ltd | Transport & logistics | 2019 |
| DDN Electrical Company Ltd | Manufacturing | 2015 |
| DDP Property Management Ltd | Households | 2022 |
| DE Lacy Mews (Pontefract) Management Company Limited | Households | 2026 |
| DE Monte Retail Limited | Wholesale & retail | 2018 |
| Deadline Twelve Ltd | Information & communication | 2025 |
| Deak Enterprises Ltd | Professional & scientific | 2020 |
| Dealegem Limited | Other services | 2015 |
| Deanoketo Ltd | Health & social care | 2019 |
| Debisa Limited | Professional & scientific | 2010 |
| Debona Electrical Services Ltd | Construction | 2025 |
| Debsar Ltd | Other services | 2015 |
| Decks Factor Ltd. | Arts & recreation | 2016 |
| Dedication Ltd | Wholesale & retail | 2025 |
| Deeks Limited | Financial services | 2025 |
| Deep Smart Light Limited | Manufacturing | 2019 |
| Deesan Trading Limited | Wholesale & retail | 2014 |
| DEF Racing Limited | Manufacturing | 2016 |
| Defiance Group Ltd | Wholesale & retail | 2026 |
| Defina Limited | Hospitality | 2024 |
| Definite Foods Ltd | Hospitality | 2025 |
| Defour Partnership Ltd | Administrative & support | 2020 |
| Dela’S Gift Shop Ltd | Wholesale & retail | 2009 |
| Delightful Displays Ltd | Wholesale & retail | 2020 |
| Delineate Cosmetics Limited | Other services | 2018 |
| Delivery Consultancy Solutions Ltd | Professional & scientific | 2021 |
| Delivologis Limited | Transport & logistics | 2020 |
| Delta Design Studio Ltd | Arts & recreation | 2003 |
| Delta Door Systems Limited | Construction | 2019 |
| Delta Electronics (UK) Ltd | Manufacturing | 1983 |
| Delta GE Construction Ltd | Construction | 2015 |
| Delta Softech Limited | Information & communication | 2010 |
| Delta Trade UK Limited | Wholesale & retail | 2020 |
| Delux Projects Limited | Construction | 2011 |
| Delux Projects Residential Ltd | Construction | 2024 |
| Deluxe Massage Limited | Other services | 2020 |
| Demeter Landscaping Services Ltd | Administrative & support | 2025 |
| Demon Construction Ltd | Construction | 2024 |
| Demtrass Limited | Professional & scientific | 2010 |
| Den-Tal-Ez Dental Products (Great Britain) Limited | Wholesale & retail | 1970 |
| Dena Solutions Ltd | Construction | 2010 |
| Denatasecurityuk Ltd | Administrative & support | 2022 |
| Dengue Ltd | Transport & logistics | 2020 |
| Denison Management Consulting Limited | Professional & scientific | 2019 |
| Deniz Cafe Ltd | Hospitality | 2021 |
| Deniz Kent Limited | Real estate | 2025 |
| Dennie & Co Ltd | Real estate | 2024 |
| Dermexplained Ltd | Health & social care | 2026 |