| DBB Electrical Ltd | Construction | 2019 |
| DBD Delivery Ltd | Transport & logistics | 2017 |
| DBD Roofing Ltd | Construction | 2022 |
| DBJ Developments Ltd | Real estate | 2025 |
| DBJ Plastering Ltd | Construction | 2021 |
| Dbkm Ltd | Information & communication | 2019 |
| Dbkproductions Limited | Arts & recreation | 2019 |
| DBL Business Services Ltd | Professional & scientific | 2023 |
| DBM Integrated Services Ltd | Professional & scientific | 2025 |
| DBM Solutions Ltd | Information & communication | 2019 |
| DBR Sports Cars Limited | Extraterritorial | 2018 |
| Dbrs Properties Ltd | Real estate | 2020 |
| Dbrs Renovations Ltd | Construction | 2022 |
| DBS Plumbing and Heating (Leeds) Limited | Construction | 2009 |
| DBS7 LLP | | 2022 |
| Dbspaces Limited | Other services | 2010 |
| DBU Tekworx Group Ltd | Information & communication | 2025 |
| DBW Developments Ltd | Real estate | 2023 |
| DC Aerials Satellite & Cctv Ltd | Information & communication | 2024 |
| DC Anaesthesia Services Limited | Health & social care | 2026 |
| DC and M Commercial Ltd | Administrative & support | 2024 |
| DC Associates Group Ltd | Administrative & support | 2018 |
| DC Brands Ltd | Wholesale & retail | 2024 |
| DC Design Engineering Ltd | Construction | 2025 |
| DC FOODS21 Ltd | Hospitality | 2021 |
| DC GAS and Plumbing Limited | Construction | 2005 |
| DC Health and Care Limited | Health & social care | 2022 |
| DC Holdings (Leeds) Ltd | Financial services | 2024 |
| DC Nineteen Ltd | Wholesale & retail | 2020 |
| DC Plumbing & Building Maintenance Limited | Construction | 2013 |
| DC Precision Engineering Ltd | Manufacturing | 2009 |
| DC Property Marketing Limited | Professional & scientific | 2019 |
| DC Property Solutions Morley Limited | Construction | 2019 |
| DC Quayle Ltd | Health & social care | 2024 |
| DC Tiling Ltd | Construction | 2024 |
| DC Windows & Construction Ltd | Construction | 2022 |
| Dc.Dpm Ltd | Professional & scientific | 2024 |
| DC3 (Assetco) Limited | Administrative & support | 2017 |
| DC3 (Issuer) Limited | Administrative & support | 2017 |
| DC4 (Assetco) Limited | Administrative & support | 2021 |
| DC4 (Issuer) Limited | Administrative & support | 2021 |
| DCA Business Services Limited | Professional & scientific | 2025 |
| Dcac Limited | Real estate | 2010 |
| DCC Commercial Cleaning Limited | Administrative & support | 2018 |
| DCC Energy Finance UK Limited | Financial services | 2015 |
| DCC Holdings (UK) Limited | Financial services | 1993 |
| DCC Limited | Financial services | 2003 |
| DCC Mobility & Rehab Limited | Manufacturing | 1990 |
| DCC North America Finance Holdings Limited | Financial services | 2023 |
| DCC North America Finance Limited | Financial services | 2021 |
| DCC Technology Limited | Financial services | 1986 |
| DCC Treasury 2014 Limited | Professional & scientific | 2014 |
| Dccarsleeds Limited | Wholesale & retail | 2024 |
| Dccx Ltd | Professional & scientific | 2024 |
| Dceil Properties Ltd | Real estate | 2020 |
| DCH Consultancy (Leeds) Ltd | Professional & scientific | 2001 |
| DCH Medical Ltd | Health & social care | 2025 |
| DCI Security Ltd | Administrative & support | 2026 |
| DCL Property and Maintenance Ltd | Real estate | 2026 |
| DCO Brooklands Dental Limited | Health & social care | 2019 |
| Dcol Ltd | Professional & scientific | 2024 |
| DCR Partners Ltd | Information & communication | 2014 |
| Dcre Consulting Ltd | Professional & scientific | 2025 |
| DCS Direct Ltd | Administrative & support | 2002 |
| DCS Distribution Limited | Wholesale & retail | 2024 |
| DD Developers Limited | Real estate | 2019 |
| DD Sound Solutions Limited | Information & communication | 2012 |
| Dd's Shoes Ltd | Wholesale & retail | 2025 |
| DDC 4SIGHT Ltd | Public administration | 2020 |
| Dddpc Trading Ltd | Wholesale & retail | 2025 |
| Ddfit Limited | Professional & scientific | 2016 |
| Ddive Group Limited | Information & communication | 2019 |
| DDJ Graphic Machinery Limited | Manufacturing | 2001 |
| DDK Roofing Ltd | Construction | 2022 |
| DDM Consultancy Limited | Manufacturing | 2017 |
| Ddmw Software Ltd | Information & communication | 2025 |
| Ddphysiotherapyworks Limited | Other services | 2019 |
| Ddroidd Limited | Information & communication | 2020 |
| DDS (Leeds) Limited | Real estate | 2022 |
| DDS Dumitru Limited | Transport & logistics | 2026 |
| DDS Garden Services Limited | Administrative & support | 2016 |
| DDX Dental Laboratory Ltd | Manufacturing | 2021 |
| DE Baga Limited | Hospitality | 2019 |
| DE Barklyns Holdings Ltd | Administrative & support | 2016 |
| DE Lacy Estates Limited | Real estate | 2025 |
| DE Mall Properties Group Ltd | Real estate | 2025 |
| DE Rosa (RSL) Ltd | Financial services | 2013 |
| DE Rossi Consulting Ltd | Professional & scientific | 2015 |
| DE Star Communication Ltd | Professional & scientific | 2010 |
| DE Vere Gardens LLP | | 2018 |
| De-Balsi Consulting Limited | Professional & scientific | 2016 |
| Deacon Basra Consultants Limited | Professional & scientific | 2011 |
| Deacon Sand Blasting Limited | Administrative & support | 2021 |
| Deaconcoates Limited | Health & social care | 2010 |
| Dead END Kings Ltd | Arts & recreation | 2025 |
| Dead Good Grips Limited | Information & communication | 2021 |
| Dead Reckoning Survey UK Ltd | Professional & scientific | 2016 |
| Deadlift Grips Ltd | Professional & scientific | 2017 |
| Deadlift UK Ltd | Wholesale & retail | 2025 |
| Deadsafe Limited | Information & communication | 2011 |