| David Cotterell Partnership Limited | Professional & scientific | 2012 |
| David Ellis Consulting Limited | Professional & scientific | 2021 |
| David Glynn Management Ltd | Construction | 2014 |
| David Heywood Consultants Limited | Professional & scientific | 2002 |
| David Shutt Solutions Ltd | Information & communication | 2018 |
| Davsibee Limited | Professional & scientific | 2018 |
| Davtone Limited | Hospitality | 2012 |
| Dawnbeck Limited | Wholesale & retail | 2017 |
| Days for Girls UK | Health & social care | 2019 |
| Dayzemaeh Photography Ltd | Professional & scientific | 2025 |
| DB Building & Construction Ltd | Construction | 2025 |
| DB Classical Dining Limited | Hospitality | 2018 |
| DB Project Infrastructure Management Limited | Financial services | 2012 |
| DBS Land Limited | Professional & scientific | 2016 |
| DC Industries Ltd | Other services | 2010 |
| DC SFX Ltd | Information & communication | 2020 |
| DCD Consultants Limited | Wholesale & retail | 2021 |
| DCF Research Ltd | Financial services | 2026 |
| DCJ Electrical Services Limited | Construction | 2018 |
| DCJ Group Ltd | Health & social care | 2022 |
| DD007SIGNALLING Limited | Construction | 2023 |
| DE MUL Ltd. | Professional & scientific | 2015 |
| Deal Enabler Limited | Financial services | 2023 |
| Dealant Property Ltd | Real estate | 2025 |
| Dealray Design Limited | Administrative & support | 2003 |
| Deals Delusion Ltd | Wholesale & retail | 2025 |
| Deamax Ltd | Wholesale & retail | 2013 |
| Decotech Ltd | Construction | 2023 |
| Dee's Auto Hub Ltd | Wholesale & retail | 2025 |
| Deep Blue Consulting Ltd | Professional & scientific | 2021 |
| Deep Blue Media Buyers Limited | Professional & scientific | 2014 |
| Deep Blue Research Limited | Professional & scientific | 2000 |
| Deepblue Limited | Other services | 1981 |
| Deerstead House Management Company Limited | Real estate | 1977 |
| Defragmental Productions Ltd | Arts & recreation | 2022 |
| Degatek Ltd | Professional & scientific | 2019 |
| Deise Consulting Ltd | Professional & scientific | 2025 |
| DEL Mundo Limited | Wholesale & retail | 2023 |
| Delicious Treatz Ltd | Hospitality | 2025 |
| Delicious Visual Effects Limited | Other services | 2008 |
| Delizioso 78 Limited | Hospitality | 2009 |
| Dellwood Properties Limited | Households | 2009 |
| Delta Build Ltd | Construction | 2025 |
| Delta Road (Chobham) Residents Association Limited | Households | 1986 |
| Dely Ltd | Wholesale & retail | 2019 |
| Demeter Midco Limited | Financial services | 2022 |
| Denco Movers Ltd | Transport & logistics | 2025 |
| Denishev Consult Group Limited | Information & communication | 2023 |
| Dennemeyer & Company Limited | Professional & scientific | 1972 |
| Dennis Hill & Associates Limited | Professional & scientific | 2001 |
| Dentabox Limited | Education | 2024 |
| Denyer Insurance Consultancy Limited | Financial services | 1997 |
| Dereen Services Ltd | Professional & scientific | 2018 |
| Derrington Construction Ltd | Construction | 2020 |
| DES Tiny Services Limited | Other services | 2002 |
| Desde Cero Limited | Real estate | 2026 |
| DESERTS4YOU Ltd | Manufacturing | 2025 |
| Desired Body Clinic Ltd | Other services | 2026 |
| Desitin Pharma Limited | Wholesale & retail | 2012 |
| Deuces Cars Limited | Transport & logistics | 2017 |
| Deuces Cars Woking Limited | Transport & logistics | 2021 |
| Developing Thoughts Coaching Ltd | Administrative & support | 2023 |
| Devereaux Montague LLP | | 2012 |
| Devops Toolbox Ltd | Professional & scientific | 2024 |
| Dewa Sayi Ltd | Health & social care | 2018 |
| DF Film Services Limited | Information & communication | 2001 |
| DG Hayle 1 Ltd | Construction | 2019 |
| DG Hayle 2 Ltd | Construction | 2020 |
| DG Lusty Glaze Ltd | Construction | 2021 |
| DG Malakoff Ltd | Construction | 2020 |
| DG Management Consultants Ltd | Professional & scientific | 2018 |
| DG Mulberry Ltd | Construction | 2019 |
| DG Parking Ltd | Construction | 2021 |
| DG Pencoed Ltd | Construction | 2020 |
| DG Prop Manager Ltd | Wholesale & retail | 2020 |
| DG Resi Ltd | Real estate | 2021 |
| DG Skye Poole Ltd | Real estate | 2022 |
| DG Skye Sandbanks Ltd | Hospitality | 2022 |
| DG Tappto Ltd | Information & communication | 2020 |
| DG Viewpoint Ltd | Construction | 2022 |
| DG Wexham Studios Ltd | Construction | 2020 |
| DGA Bizdev Ltd | Professional & scientific | 2022 |
| Dgemm Limited | Real estate | 2016 |
| DH Insights Ltd | Professional & scientific | 2026 |
| DH Services Ltd | Transport & logistics | 2023 |
| DHA Associates Ltd | Administrative & support | 2017 |
| DHA Housing Ltd | Real estate | 2018 |
| Dhammakaya International Society of the United Kingdom | Other services | 2002 |
| DI Lieto Patisserie Ltd | Manufacturing | 2026 |
| Diamond Hill Limited | Administrative & support | 2021 |
| Diamond Hill Properties Ltd | Real estate | 2021 |
| Diamond Landscaping (Guildford) Limited | Administrative & support | 2010 |
| Diamond Landscaping Limited | Administrative & support | 2012 |
| Diamondedits Ltd | Information & communication | 2024 |
| Diamotech Limited | Wholesale & retail | 2024 |
| Dianthus Trading CIC | Hospitality | 2010 |
| Diawisso Hemp Development Ltd | Administrative & support | 2025 |
| Dic.Co.Uk Limited | Professional & scientific | 2000 |
| Dick Daldry Limited | Other services | 2009 |
| Diell Limited | Financial services | 2025 |