| Driving Demand Limited | Administrative & support | 2006 |
| Driving Experience Days Limited | Administrative & support | 2020 |
| DRM Domestic & Commercial Property Services Ltd | Construction | 2020 |
| DRM Painting Services Ltd | Construction | 2024 |
| Dromada Ltd. | Professional & scientific | 2016 |
| Drone AI Limited | Information & communication | 2025 |
| Droneserve Ltd | Agriculture & fishing | 2022 |
| Drummond Court Residents Association Limited | Professional & scientific | 2006 |
| Drummond Street Artists CIC | Arts & recreation | 2025 |
| Drumnyne Limited | Arts & recreation | 2002 |
| Dryroasted I.T. Ltd | Information & communication | 2013 |
| Dsas Installation and Maintenance Limited | Manufacturing | 2016 |
| Dsbd Ltd | Administrative & support | 2023 |
| Dsbp Birmingham Limited | Professional & scientific | 2016 |
| Dsbp Essex (2020) Limited | Professional & scientific | 2020 |
| Dsbp Essex (2022) Limited | Professional & scientific | 2022 |
| Dsbp Essex Limited | Professional & scientific | 2016 |
| Dsbp Farnborough (2020) Limited | Professional & scientific | 2019 |
| Dsbp Farnborough LLP | | 2019 |
| Dsbp Holdings Limited | Financial services | 2016 |
| Dsbp Kingston LLP | | 2011 |
| Dsbp London LLP | | 2018 |
| Dsbp Probate Services LLP | | 2017 |
| Dsbp South East LLP | | 2015 |
| Dsbp South East Regional Services Limited | Financial services | 2013 |
| Dsbp Trustee Services Limited | Administrative & support | 2019 |
| Dsbp Worcester Audit Limited | Professional & scientific | 2018 |
| Dsbp Worcester Holdings Limited | Financial services | 2003 |
| Dsbph Birmingham LLP | | 2011 |
| Dsbph Essex LLP | | 2013 |
| Dsbph Oxford LLP | | 2017 |
| DSD Consultancy Ltd | Health & social care | 2013 |
| DSJ Consulting Ltd | Professional & scientific | 2004 |
| Dslx Ltd | Professional & scientific | 2021 |
| DSP & Sons Ventures Ltd | Wholesale & retail | 2021 |
| DSP Property Holdings Ltd | Real estate | 2025 |
| Dstr Baits & Tackle Limited | Wholesale & retail | 2019 |
| DT & MN Williams Ltd | Professional & scientific | 2017 |
| DT Proactive Marketing Ltd | Administrative & support | 2014 |
| DTF Custom Transfers Ltd | Manufacturing | 2025 |
| Duke Accountancy Limited | Professional & scientific | 2016 |
| Dukinfield Build Limited | Administrative & support | 2008 |
| Dunton Climate Ltd | Manufacturing | 2024 |
| Dunton Construction Services Limited | Construction | 1999 |
| Dunton Garden Suburb Limited | Construction | 2015 |
| Dunton Holdings Limited | Financial services | 2024 |
| Dunton Storage Limited | Transport & logistics | 2022 |
| DUO Transport Services Ltd | Transport & logistics | 2025 |
| Duprey Psychology Ltd | Health & social care | 2013 |
| Durasol Renewables & Security Ltd | Construction | 2025 |
| Durmaz Property Limited | Real estate | 2025 |
| Durocar UK Ltd | Wholesale & retail | 2020 |
| Dusters (Colchester) Limited | Other services | 2003 |
| Dusters of Brentwood Ltd | Administrative & support | 2024 |
| Duztepe Ltd | Hospitality | 2022 |
| DV Anaesthetics Ltd | Health & social care | 2011 |
| DV Renovations & Construction Ltd | Construction | 2017 |
| DW CRE8TIVE Limited | Manufacturing | 2012 |
| Dwayz Properties Limited | Real estate | 2024 |
| Dwell Good Ltd | Real estate | 2017 |
| Dwhc Construction Limited | Construction | 2013 |
| Dyer Mackay Developments Limited | Construction | 2012 |
| Dylan James Building Solutions Limited | Construction | 2008 |
| Dymoke Properties Ltd | Real estate | 2013 |
| Dynamic Ceramics Limited | Construction | 2004 |
| Dynamic Drawing Services Ltd | Professional & scientific | 2025 |
| Dynamic Freight Forwarding Limited | Administrative & support | 2006 |
| Dynamo Property Solutions Ltd | Real estate | 2023 |
| Dynolight Racing Ltd | Professional & scientific | 2013 |
| Dysfunctional Families Publishing House Ltd | Information & communication | 2016 |
| Dyspraxia Foundation | Education | 1996 |
| Dzcreative Limited | Professional & scientific | 2025 |
| E & M Property Renovations Ltd | Construction | 2022 |
| E Alexander & Sons Limited | Wholesale & retail | 1988 |
| E B Aesthetics Limited | Wholesale & retail | 2013 |
| E H Energy Ltd | Other services | 2017 |
| E L B Associates Limited | Professional & scientific | 2009 |
| E Mann & Co Ltd | Wholesale & retail | 2025 |
| E Piller & SON Limited | Wholesale & retail | 2015 |
| E R Property Rentals Limited | Real estate | 2014 |
| E&T Concept & Design Ltd | Construction | 2021 |
| E-One Haulage Limited | Professional & scientific | 2009 |
| E. Kinsella & Co Limited | Professional & scientific | 2000 |
| E. O. Burton (East Anglia) Limited | Manufacturing | 1989 |
| E.J. Taylor & Sons Limited | Construction | 1963 |
| E.J.Taylor Group Limited | Financial services | 2021 |
| E.N.H. Productions Ltd | Information & communication | 2023 |
| E.O.Burton & Company Limited | Manufacturing | 1955 |
| E16 Rentals Ltd | Administrative & support | 2013 |
| E16 Taxi Sales Ltd | Transport & logistics | 2019 |
| E3 Lighting and Electrics Limited | Information & communication | 2007 |
| EAF Group Ltd | Wholesale & retail | 1993 |
| Eagle Comms Limited | Construction | 2022 |
| Eagle Elite Ltd | Construction | 2026 |
| Eagle Fencing & Landscapes Limited | Administrative & support | 1997 |
| Eagle Fencing Supplies LLP | | 2024 |
| Eagle Global Limited | Health & social care | 2008 |
| Eales Shutters Limited | Manufacturing | 2008 |
| Earny Limited | Administrative & support | 2023 |
| Earthpoint Properties Ltd | Real estate | 2022 |