| David Stead Landscapes Limited | Administrative & support | 2003 |
| David Wolfe Consultancy Limited | Professional & scientific | 2019 |
| Davies Recker Group Limited | Financial services | 2018 |
| Daviesallan Consulting Limited | Professional & scientific | 2021 |
| Davis & Associates Ltd | Construction | 2012 |
| Dawn Donohoe Ltd | Professional & scientific | 2018 |
| Day Design Limited | Professional & scientific | 1997 |
| Daybyalan Ltd | Hospitality | 2022 |
| DB Design & Build (Ightham) Ltd | Construction | 2023 |
| DB Design & Build (Tonbridge) Ltd | Construction | 2024 |
| DB Design & Build Limited | Construction | 2008 |
| DB Investment Properties Limited | Real estate | 2025 |
| DB Shine Ltd | Administrative & support | 2021 |
| DBS ( Speldhurst ) Ltd | Construction | 2018 |
| DBS Capital Surrey Limited | Construction | 2021 |
| DC Construction & Extensions Ltd | Construction | 2019 |
| DC Electrical Ltd | Construction | 2001 |
| DC Management East Limited | Construction | 2020 |
| DC Properties Coventry Ltd | Construction | 2016 |
| DC Tech Services Limited | Professional & scientific | 2018 |
| DCJ Associates Limited | Professional & scientific | 2019 |
| DDP Handyman Services Ltd | Construction | 2021 |
| DE Castello Capital LLP | | 2017 |
| DE Facto 1229 Limited | Extraterritorial | 2005 |
| DE Karnevay Limited | Professional & scientific | 2009 |
| DE Monchy UK Limited | Wholesale & retail | 2016 |
| Debbie LEE Design Limited | Professional & scientific | 2020 |
| Deborah Coltham Rare Books Ltd | Wholesale & retail | 2018 |
| Decay Technology Ltd | Professional & scientific | 2016 |
| Declan Cunningham Limited | Professional & scientific | 2025 |
| DEE Boss Talent Management Ltd | Other services | 2016 |
| Defencelegalservices Limited | Professional & scientific | 2015 |
| Defensor International Limited | Administrative & support | 1993 |
| Define Fit OUT Ltd | Construction | 2019 |
| Definition Gym Wear Ltd | Wholesale & retail | 2021 |
| Definitive Property Services Ltd | Construction | 2021 |
| Dejuttt Ltd | Hospitality | 2015 |
| Delftway Ltd | Manufacturing | 2019 |
| Delkoda Limited | Real estate | 2024 |
| Dellaway Ltd | Professional & scientific | 2019 |
| Delta K Explosive Engineering Systems Limited | Professional & scientific | 1998 |
| Delta Rentals Limited | Households | 2022 |
| Demos Building Services Limited | Construction | 2015 |
| Dendav Limited | Real estate | 1972 |
| Denim and Bone Ltd | Extraterritorial | 2020 |
| Denning Associates Limited | Professional & scientific | 2021 |
| Dennot Services Ltd | Professional & scientific | 2012 |
| Dent Demons Ltd | Wholesale & retail | 2022 |
| Dent Doctor Limited | Wholesale & retail | 2012 |
| DEO Developments (North West) Ltd | Real estate | 2025 |
| Dependacare Ltd | Administrative & support | 2026 |
| Dependant Limited | Arts & recreation | 2009 |
| Derek F Properties Limited | Real estate | 2010 |
| Dermaprice Limited | Wholesale & retail | 2026 |
| Derous Ltd | Professional & scientific | 2021 |
| Desert Island Drinks Limited | Manufacturing | 2013 |
| Design & Build Kent Ltd | Construction | 2023 |
| Design & Construct Management Limited | Construction | 2016 |
| Design Outdoors Limited | Construction | 2015 |
| Design Realised Limited | Extraterritorial | 2009 |
| Design Tact Branding Ltd. | Professional & scientific | 2017 |
| Design to Value Ltd | Professional & scientific | 2021 |
| Designers Forum Limited | Manufacturing | 2002 |
| Deutsche Hampers Limited | Manufacturing | 2024 |
| Devafield Limited | Construction | 1981 |
| Develop Your Land Ltd | Real estate | 2020 |
| Development Project Management (DPM) Ltd | Professional & scientific | 2025 |
| Devita Beauty & Aesthetics Limited | Other services | 2019 |
| Devnati Estates Ltd | Real estate | 2025 |
| Dewberry Co Investments Ltd | Real estate | 2026 |
| DFA Aftermarket Media Ltd | Administrative & support | 2021 |
| DFA Manufacturing Media Ltd | Administrative & support | 2021 |
| DFB Building Services Limited | Construction | 1996 |
| DFC Electrics Ltd | Construction | 2018 |
| Dgdetail Limited | Administrative & support | 2025 |
| DGW Consulting Ltd | Professional & scientific | 2011 |
| Dh-Budenberg Limited | Manufacturing | 2010 |
| Dharmasha Limited | Wholesale & retail | 2021 |
| Diablo Designs Ltd. | Information & communication | 1997 |
| Diacore Concrete Cutting Limited | Construction | 1993 |
| Dice Matrix Consulting Limited | Professional & scientific | 2013 |
| Differentius Limited | Information & communication | 2013 |
| Digimach Limited | Information & communication | 2018 |
| Digital Consort Ltd | Information & communication | 2015 |
| Digital Data Limited | Information & communication | 1997 |
| Digital Leisure Solutions Ltd. | Professional & scientific | 2019 |
| Digital Print Studio Limited | Other services | 2011 |
| Diome Limited | Professional & scientific | 2021 |
| Dios-Protege Health Limited | Health & social care | 2023 |
| Directions Ltd | Wholesale & retail | 2026 |
| Discovery Advisers Limited | Professional & scientific | 2026 |
| Diversified Financial Investments Thinkompany Ukeig | Professional & scientific | 1995 |
| Diversified Properties (Europe) Ltd | Financial services | 1994 |
| Diviniti Publishing Limited | Wholesale & retail | 1999 |
| Divot Golf Limited | Arts & recreation | 2024 |
| Dixon Rentals Limited | Real estate | 2019 |
| Dizzy's Coffee Ltd | Wholesale & retail | 2022 |
| Djinvestproperty Limited | Real estate | 2018 |
| DJK Southern Ltd | Other services | 2012 |
| DJT Property Limited | Real estate | 2017 |