| Deep Medicine Ltd | Information & communication | 2019 |
| Deepals Limited | Health & social care | 2022 |
| Deepcut (North) Residents Company Limited | Households | 2026 |
| Deepcut (South) Residents Company Limited | Households | 2026 |
| Deeping Carpets Ltd | Wholesale & retail | 2023 |
| Deeping Convenience Store Ltd | Wholesale & retail | 2021 |
| Deeping Desserts Ltd | Hospitality | 2025 |
| Deeping Gate Trees Limited | Agriculture & fishing | 1998 |
| Deeping Hand Car Wash Ltd | Wholesale & retail | 2013 |
| Deeping K Ltd | Hospitality | 2023 |
| Deeping Land Ltd | Construction | 2024 |
| Deeping Meadows Management Company Limited | Households | 2019 |
| Deeping Pizza Ltd | Hospitality | 2026 |
| Deeping Rangers Football Club Ltd | Arts & recreation | 2020 |
| Deeping Taxis Ltd | Transport & logistics | 2021 |
| Deeping United FC | Education | 2023 |
| Deepinlocks Limited | Extraterritorial | 2021 |
| Deepwater Offshore, Marine, Power and Engineering Consultancy Limited | Construction | 2024 |
| Deepx Ltd | Real estate | 2024 |
| Defender Water Treatment Solutions Ltd | Professional & scientific | 2019 |
| Define & Radiate Ltd | Wholesale & retail | 2025 |
| Definitive Project Solutions Limited | Professional & scientific | 2013 |
| Dega Limited | Financial services | 2001 |
| Dega Property Management Limited | Real estate | 2006 |
| Degafill Ltd | Construction | 2020 |
| Degafloor Limited | Manufacturing | 1998 |
| Deitom Limited | Wholesale & retail | 2019 |
| Deividas & V Ltd | Transport & logistics | 2018 |
| Dejado Limited | Information & communication | 2026 |
| Deka Transport Ltd | Transport & logistics | 2019 |
| Delaram Ltd | Wholesale & retail | 2023 |
| Delboys Courier Services Ltd | Transport & logistics | 2014 |
| Delegate Heating and Plumbing Ltd | Construction | 2020 |
| Delight Domes Ltd | Administrative & support | 2025 |
| Deliverance Construction & Management Ltd | Construction | 2024 |
| Deliverybyme Ltd | Transport & logistics | 2023 |
| Delmia Limited | Professional & scientific | 2021 |
| Deloru Publishers Limited | Information & communication | 2011 |
| Delta Computer Services Ltd | Other services | 2021 |
| Delta Group Limited | Financial services | 2024 |
| Delta Learning Ltd | Professional & scientific | 2024 |
| Delta T Cooling Ltd | Construction | 2016 |
| Deltakey Limited | Transport & logistics | 2010 |
| Delux Candy Shop Ltd | Wholesale & retail | 2024 |
| Delux Nails & Beauty Limited | Other services | 2024 |
| Dempsey+ Limited | Real estate | 2026 |
| Demtam International Limited | Health & social care | 2015 |
| Denal Properties Limited | Construction | 1987 |
| Denaus Transport Ltd | Transport & logistics | 2017 |
| Denis Fast Delivery Ltd | Transport & logistics | 2021 |
| Denise G Francis Limited | Financial services | 2021 |
| Denni Systems Limited | Information & communication | 2015 |
| Dennis & Associates Limited | Wholesale & retail | 2016 |
| Dennis Estates Limited | Professional & scientific | 1998 |
| Dent Genie - Paintless Dent Removal Ltd | Wholesale & retail | 2021 |
| Dent Magic Ltd | Wholesale & retail | 2015 |
| Dent Quote Ltd | Extraterritorial | 2016 |
| Dental Pods (Hygiene Services) Limited | Health & social care | 2012 |
| Dental Pods Academy Ltd | Education | 2020 |
| Dentl Group Ltd | Health & social care | 2026 |
| Dentmech Limited | Wholesale & retail | 2012 |
| Denvir Herbert Developments Ltd | Real estate | 2007 |
| Deosai Technical Limited | Professional & scientific | 2016 |
| Depree Associates Limited | Professional & scientific | 2007 |
| Derek & SON Limited | Transport & logistics | 2018 |
| Dermal Future Limited | Other services | 2022 |
| Dermal Plus Clinic Ltd | Wholesale & retail | 2025 |
| Dermal Plus Phlebotomy Ltd | Health & social care | 2025 |
| Dermaline Aesthetics Ltd | Other services | 2022 |
| Derryage Limited | Agriculture & fishing | 1979 |
| Derwyn Hardwick Development Services Ltd | Other services | 2020 |
| DES Services Ltd | Transport & logistics | 2026 |
| Desander Consulting Limited | Professional & scientific | 2013 |
| Desi Accounting Ltd | Professional & scientific | 2026 |
| Desi Baba Food UK Limited | Hospitality | 2024 |
| Desi Peterborough Ltd | Hospitality | 2024 |
| Design Anatomy Limited | Professional & scientific | 2015 |
| Design and Social Limited | Information & communication | 2015 |
| Design Spring Limited | Professional & scientific | 2022 |
| Design Teamx Limited | Professional & scientific | 2024 |
| Designation (Hose and Couplings) Limited | Manufacturing | 2021 |
| Designation Limited | Manufacturing | 1978 |
| Designed Pilates Ltd | Arts & recreation | 2022 |
| Desire Rugs Ltd | Wholesale & retail | 2010 |
| Desired Property Limited | Real estate | 2025 |
| Desperado Entertainment Limited | Information & communication | 2024 |
| Dessert Craft Limited | Hospitality | 2025 |
| Dessert Haus PB Ltd | Hospitality | 2025 |
| Dessert Junky AK Ltd | Hospitality | 2025 |
| Dessert Junky Nationwide Ltd | Hospitality | 2024 |
| Desserts Delivered Peterborough Ltd | Hospitality | 2017 |
| Destination Transport Ltd | Transport & logistics | 2021 |
| Detailology Limited | Wholesale & retail | 2019 |
| Detrom Properties Ltd | Real estate | 2021 |
| DEV & Sons Real Estate Solutions Ltd | Real estate | 2020 |
| DEV1 BTL Limited | Construction | 2020 |
| Devas Keogh Solicitors Limited | Professional & scientific | 2010 |
| Develop Automotive Training Limited | Education | 2019 |
| Develop What Ltd | Information & communication | 2014 |
| Developing Online Ltd | Education | 2019 |