| Dose Dynamics Ltd | Information & communication | 2019 |
| Doseva Consulting Limited | Professional & scientific | 2014 |
| Dotcubed Limited | Information & communication | 2018 |
| Double AA Properties Ltd | Real estate | 2021 |
| Double Clutch Ltd | Wholesale & retail | 2024 |
| Double Feature Technology Limited | Information & communication | 2013 |
| Double H Racing Limited | Arts & recreation | 2022 |
| Double JJ Ltd | Real estate | 2023 |
| Double Rainbow Marketing Ltd | Wholesale & retail | 2017 |
| Douglas Campbell Project Quality Ltd | Administrative & support | 2024 |
| Douglas Lifesciences Ltd | Administrative & support | 2020 |
| Dove Interior Design Ltd | Construction | 2023 |
| Dovegate Limited | Professional & scientific | 1999 |
| Dovestone Bathrooms Limited | Manufacturing | 2025 |
| Dovetail Bookkeeping and Accountancy Services Limited | Professional & scientific | 2013 |
| DOW Schofield Watts Asset Based Lending Risk Management LLP | | 2022 |
| DOW Schofield Watts Business Planning LLP | | 2010 |
| DOW Schofield Watts Corporate Advisory LLP | | 2023 |
| DOW Schofield Watts Corporate Finance (Leeds) Limited | Financial services | 2012 |
| DOW Schofield Watts Corporate Finance (Leisure) LLP | | 2018 |
| DOW Schofield Watts Corporate Finance (London) Limited | Professional & scientific | 2018 |
| DOW Schofield Watts Corporate Finance Limited | Professional & scientific | 2011 |
| DOW Schofield Watts Debt Advisory (London & South East) LLP | | 2021 |
| DOW Schofield Watts Debt Advisory (North West) LLP | | 2020 |
| DOW Schofield Watts Operations Limited | Professional & scientific | 2022 |
| DOW Schofield Watts Services LLP | | 2014 |
| DOW Schofield Watts Sponsors LLP | | 2023 |
| DOW Schofield Watts Tax Advisory (North West) LLP | | 2020 |
| DOW Schofield Watts Transaction Services (Solent) LLP | | 2026 |
| DOW Schofield Watts Transaction Services LLP | | 2008 |
| Dow-Maint Ltd | Professional & scientific | 2025 |
| Dowhill Group Limited | Professional & scientific | 2004 |
| Downs Services Ltd | Transport & logistics | 2026 |
| Doyle Beds Limited | Wholesale & retail | 2018 |
| Doyle IT Development Ltd | Information & communication | 2020 |
| Dozo Sushi Ltd | Hospitality | 2011 |
| DP Design Solutions Limited | Administrative & support | 2012 |
| DP GAS & Plumbing Services Ltd | Construction | 2016 |
| DP Process Consulting Limited | Professional & scientific | 2018 |
| Dp-Scm Limited | Professional & scientific | 2024 |
| DP4 Ltd | Administrative & support | 2026 |
| DP4M Ltd | Arts & recreation | 2023 |
| DPA Business Support Limited | Professional & scientific | 2019 |
| Dpec Project Services Ltd | Professional & scientific | 2023 |
| Dpec Properties Limited | Real estate | 2025 |
| DPH CAD Services Limited | Professional & scientific | 2017 |
| Dpjm Ltd | Wholesale & retail | 2024 |
| DPL Graphics Ltd | Professional & scientific | 2020 |
| DPM Assessment Services Ltd | Construction | 2023 |
| Dpmb Projects Ltd | Construction | 2023 |
| DPR OIL and GAS Consultants Limited | Administrative & support | 2014 |
| DPW Interim Limited | Professional & scientific | 2016 |
| DR Burchell Aesthetics Limited | Administrative & support | 2017 |
| DR Dave Riddick Ltd | Administrative & support | 2022 |
| DR Finance Limited | Administrative & support | 2025 |
| DR Frances Emanuel Limited | Health & social care | 2025 |
| DR Hermans Limited | Wholesale & retail | 1999 |
| DR Lucy Thomas Dentistry and Aesthetics Limited | Health & social care | 2026 |
| DR Nerys Owen Limited | Professional & scientific | 2020 |
| DR Rachel Ltd | Health & social care | 2024 |
| DR Schar UK Limited | Manufacturing | 1998 |
| DR Sharma Healthcare Ltd | Health & social care | 2024 |
| DR Solicitors Limited | Professional & scientific | 2007 |
| DR Theodoros Kapos Limited | Health & social care | 2012 |
| DR Walton Limited | Health & social care | 2024 |
| DR Weaver GP Locum Limited | Administrative & support | 2014 |
| DR. Andrea Psychology Services Limited | Education | 2024 |
| DR. Sabey Inpsych Ltd | Health & social care | 2018 |
| DRA Holdings Ltd | Financial services | 2015 |
| Dragon Digital Design Solutions Limited | Professional & scientific | 2017 |
| Dragon Warmth Solutions Ltd | Construction | 2025 |
| Dragos Security UK Limited | Information & communication | 2021 |
| Drains-Aid Limited | Extraterritorial | 2001 |
| Dramos Property Services Ltd | Real estate | 2025 |
| Dransfield Property Management Ltd | Real estate | 2024 |
| Draper Design Services Ltd | Information & communication | 2015 |
| Draw Plan Ltd | Construction | 2019 |
| Draycott Services Ltd | Information & communication | 2023 |
| DRB Electrics Ltd | Construction | 2014 |
| DRD Trading Ltd | Wholesale & retail | 2023 |
| Dream Town Property Ltd | Real estate | 2019 |
| Dream Travel Planners Limited | Administrative & support | 1995 |
| Dreamcatcher Outdoors CIC | Education | 2022 |
| Dreamrising Limited | Other services | 2017 |
| Dreams Captured Ltd | Arts & recreation | 2018 |
| Dreams OFF Licence & Grocery Ltd | Wholesale & retail | 2025 |
| Dreamshakes Ltd | Hospitality | 2020 |
| Dreamteam Marine Ltd | Administrative & support | 2025 |
| Dreamy Cloud Teepees Limited | Arts & recreation | 2021 |
| Drema Consulting Ltd | Professional & scientific | 2026 |
| Dreso Consulting Limited | Professional & scientific | 2020 |
| Drewe Associates Ltd | Other services | 2010 |
| DRH UK Services Limited | Information & communication | 2019 |
| Drill Direct Holdings Limited | Other services | 2023 |
| Drill Direct Limited | Construction | 2010 |
| Drill Direct Services Limited | Construction | 2019 |
| Drink Dash Ltd | Administrative & support | 2024 |
| Drink UP Disco Ltd | Hospitality | 2026 |
| Drink UP Musicals Ltd | Hospitality | 2025 |
| Drink UP Warrington Limited | Hospitality | 2023 |