| Dimarpe Limited | Wholesale & retail | 2022 |
| Dimension Biotechnologies Limited | Professional & scientific | 2024 |
| Dimianu Ltd | Transport & logistics | 2025 |
| Dimicro Limited | Information & communication | 2002 |
| Dimtel Tech Ltd | Information & communication | 2024 |
| DIN Ltd | Professional & scientific | 2020 |
| Dine at Home Bristol Ltd | Hospitality | 2020 |
| Dinesen-Denmark Limited | Real estate | 2003 |
| Dingdong Pubs Ltd | Hospitality | 2019 |
| Dingles Builders (NI) Limited | Construction | 1971 |
| Dinglewood Maintenance Limited | Real estate | 1984 |
| Dingmaster Accident Repair Centre Ltd | Wholesale & retail | 2019 |
| Dings and Dents Ltd | Wholesale & retail | 2024 |
| Dings Community Association | Other services | 2004 |
| Dining With Dignity Ltd | Hospitality | 2014 |
| Dinkelberg Transport Ltd | Other services | 2024 |
| Dinko Trans Ltd | Wholesale & retail | 2025 |
| Dinky Drivers Limited | Administrative & support | 2019 |
| Dinky Giant Design Company Ltd | Information & communication | 2025 |
| Dino's Coffee Ltd | Manufacturing | 2023 |
| Dinobyte Studios Ltd | Information & communication | 2016 |
| Dintegro Ltd | Construction | 2025 |
| DIO Implants Limited | Manufacturing | 2017 |
| Diodes Ltd | Information & communication | 2015 |
| Dioni Construction Ltd | Construction | 2019 |
| Dionysos Cellars Ltd | Wholesale & retail | 2021 |
| Diop Mbaye Logistics Ltd | Transport & logistics | 2025 |
| Dior Foods Limited | Hospitality | 2025 |
| Diorazio Consulting Ltd | Professional & scientific | 2025 |
| Dipanjali Ltd | Real estate | 2024 |
| Diplomats of Sound CIC | Arts & recreation | 2011 |
| Dipsy Daisy Ltd | Other services | 2017 |
| Dirah Properties Ltd | Real estate | 2024 |
| Direct 1ST Solutions Limited | Wholesale & retail | 2010 |
| Direct Building Plastics Ltd | Wholesale & retail | 2021 |
| Direct Building Services (Bristol) Ltd | Construction | 2013 |
| Direct Car Transport Ltd | Transport & logistics | 2025 |
| Direct Concrete Remedials Ltd | Construction | 2011 |
| Direct Courier Partner Limited | Other services | 2018 |
| Direct Cremations Bristol Limited | Other services | 2025 |
| Direct Dent Removal Ltd | Wholesale & retail | 2017 |
| Direct Electrical (Bristol) Ltd | Construction | 1999 |
| Direct GAS & Power Ltd | Wholesale & retail | 2026 |
| Direct Mail Systems Limited | Extraterritorial | 2009 |
| Direct Move Property Solutions Limited | Real estate | 2015 |
| Direct Property Management & Letting Ltd | Real estate | 2024 |
| Direct Sales Training (UK) Limited | Professional & scientific | 1990 |
| Direct Study House Ltd. | Professional & scientific | 2015 |
| Direct-Ortho Limited | Health & social care | 1997 |
| Direction Detection Ltd | Manufacturing | 2011 |
| Director's Syndicate Ltd | Other services | 2024 |
| Directory Network Ltd | Professional & scientific | 2021 |
| Direzione Ltd | Public administration | 2015 |
| Dirilis Limited | Hospitality | 2017 |
| Dirty Burgerz Go Biiig Ltd | Hospitality | 2025 |
| Dirty Burgerz Union Ltd | Hospitality | 2025 |
| Dirty Jack Group Limited | Information & communication | 2021 |
| Dirty Paws Ltd | Other services | 2022 |
| Dirty Workers Limited | Administrative & support | 2019 |
| Disabilityaid Ltd | Other services | 2025 |
| Disabled Travel Service | Transport & logistics | 2001 |
| Discerning Palette Limited | Wholesale & retail | 2021 |
| Discount Galaxy Ltd | Wholesale & retail | 2025 |
| Discover Playcafe Ltd | Arts & recreation | 2024 |
| Discover Yoga Discover YOU Ltd | Education | 2026 |
| Discover Your Bounce for Business Ltd | Administrative & support | 2017 |
| Discover Your Bounce Limited | Other services | 2010 |
| Discovery Education Centre Ltd | Education | 2023 |
| Discretion Assured Ltd | Extraterritorial | 2018 |
| Dishu Private Ltd | Wholesale & retail | 2023 |
| Dispense UK Limited | Professional & scientific | 2016 |
| Dispensing Direct Ltd | Health & social care | 2015 |
| Dispensing Services UK (Dsuk) Ltd | Health & social care | 2026 |
| Displaced Dishes Limited | Wholesale & retail | 2019 |
| Display & Innovation Ltd | Manufacturing | 2005 |
| Dispute Assist Limited | Professional & scientific | 2019 |
| Dispute Resolution Ltd | Administrative & support | 1994 |
| Disques DE Bèton Brut Limited | Information & communication | 2026 |
| Disrupt Industries UK Limited | Professional & scientific | 2016 |
| Disruptive Prototyping Limited | Professional & scientific | 2020 |
| Disruptt Clothing UK Limited | Wholesale & retail | 2023 |
| Distgen Brayton LGC Limited | Energy | 2013 |
| Distgen Control Solutions Limited | Professional & scientific | 2016 |
| Distgen Faccombe LGC Limited | Energy | 2011 |
| Distgen Hinton LGC PLC | Energy | 2013 |
| Distgen Rogershill LGC PLC | Energy | 2012 |
| Distgen Wanstrow LGC Ltd | Energy | 2013 |
| Distgen Westray LGC Ltd | Manufacturing | 2012 |
| Distinct Cremations Holdings Limited | Professional & scientific | 2021 |
| Distinct Cremations Limited | Professional & scientific | 2021 |
| Distinct Funeral Plans Limited | Professional & scientific | 2021 |
| Distinct Technologies UK Ltd | Information & communication | 2024 |
| Distinction Decorating Limited | Construction | 2019 |
| Distinction Property Services Limited | Construction | 2004 |
| Distinction Scaffold Limited | Construction | 2008 |
| Distinctive World Travel Limited | Administrative & support | 2005 |
| Distinctives of Life Limited | Extraterritorial | 2013 |
| Distortion Creative Group Limited | Information & communication | 2017 |
| Distortion Studios Ltd | Information & communication | 2023 |
| Distressed Sites Ltd | Information & communication | 2026 |