| Dobas Electrics Ltd | Construction | 2024 |
| Dobrowolski Property Ltd | Real estate | 2025 |
| Doby Ltd | Wholesale & retail | 2026 |
| Doby Wash Launderette Limited | Other services | 2017 |
| Docar Auto Repair Ltd | Wholesale & retail | 2023 |
| Dockney Consulting Ltd | Administrative & support | 2015 |
| Docks Properties Ltd | Real estate | 2025 |
| DOCSELECT75 Ltd | Health & social care | 2026 |
| Doctor Aesthetica Ltd | Health & social care | 2024 |
| Doctor Electrical Ltd | Construction | 2018 |
| Doctor Felicity Hart - West Bridgford Wellness Ltd | Health & social care | 2026 |
| Doctor Green Services Limited | Other services | 2019 |
| Doctor Mobile Ltd | Other services | 2019 |
| Doctor Mobile Phone Ltd | Other services | 2019 |
| Doctor-Funnels Ltd | Professional & scientific | 2026 |
| Doctorwindscreen Ltd | Wholesale & retail | 2024 |
| Dod-Man Property Limited | Real estate | 2022 |
| Doda the Store Ltd | Wholesale & retail | 2019 |
| Dodd Properties(Kent)Limited | Financial services | 1956 |
| Dodds & Dodds Properties Limited | Real estate | 2021 |
| Dodds Property Ltd | Real estate | 2019 |
| Dodford Perfect Ltd | Transport & logistics | 2014 |
| Doeray Media Limited | Professional & scientific | 2015 |
| Doff Portland Limited | Manufacturing | 1946 |
| Doff Technologies Limited | Extraterritorial | 1999 |
| Dog and Parrot Real ALE House Limited | Hospitality | 2019 |
| Dogaholic Grooming Academy Ltd | Other services | 2021 |
| Dogan Properties Limited | Construction | 2025 |
| Dohwa Properties Limited | Real estate | 2026 |
| DOK Property Management Ltd | Real estate | 2025 |
| Dolby Investments Limited | Real estate | 1998 |
| Dolby Property Holdco Limited | Real estate | 2021 |
| Dolby Property Limited | Real estate | 2021 |
| Dolce Nottingham Limited | Hospitality | 2020 |
| Doleman 101 Limited | Professional & scientific | 2020 |
| Dolepropco Limited | Arts & recreation | 2022 |
| Dolfinn Construction Ltd | Construction | 2016 |
| Dolfinn Van Sales Limited | Wholesale & retail | 2025 |
| Dolidu Ltd | Health & social care | 2012 |
| Dolled by Chelsie Limited | Other services | 2024 |
| Dollond & Aitchison Limited | Extraterritorial | 2012 |
| Dolly Char (UK) Limited | Other services | 2004 |
| Dolly Char Limited | Other services | 2004 |
| Dollys Party Limited | Hospitality | 2023 |
| Dolpha Ltd | Wholesale & retail | 2019 |
| Dolphin Developments and Management Ltd | Real estate | 2021 |
| Dolphin Family Holdings Ltd | Arts & recreation | 2017 |
| Dolphin Spa Ltd | Wholesale & retail | 2006 |
| DOM4PROPERTIES Ltd | Real estate | 2025 |
| Doma Group Ltd | Construction | 2020 |
| Domen LAS Limited | Information & communication | 2014 |
| Domeplus Developments Limited | Extraterritorial | 1990 |
| Domestic & Commercial Services Ltd | Administrative & support | 2020 |
| Domestic Construction Specialist Limited | Construction | 2024 |
| Domestic Goddess Nottingham Limited | Administrative & support | 2023 |
| Domestic Goddess Property Management Ltd | Real estate | 2024 |
| Domestic Service Centre Ltd | Wholesale & retail | 2024 |
| Dominic Frampton Limited | Professional & scientific | 2003 |
| Dominion Afro Universal Market Ltd | Wholesale & retail | 2023 |
| Domino D Limited | Information & communication | 2012 |
| Dominusecom Ltd | Wholesale & retail | 2024 |
| Domiox Ltd | Transport & logistics | 2020 |
| Domotex Ltd | Construction | 2021 |
| Domum Emptio Limited | Real estate | 2022 |
| Domum Stays Ltd | Hospitality | 2019 |
| DON FOX Ltd. | Manufacturing | 2002 |
| DON Jhimmy Ltd | Manufacturing | 2025 |
| DON Trans Ltd | Transport & logistics | 2017 |
| Don-Zich Integrated Services Ltd | Construction | 2025 |
| Donagh Plant Hire Ltd | Administrative & support | 2022 |
| Dondu Chemical Consultancy Ltd | Transport & logistics | 2021 |
| Doner Box Limited | Hospitality | 2023 |
| Dong Property Holding Ltd | Real estate | 2026 |
| Donington Plastics Limited | Manufacturing | 1981 |
| Donkey Hill Holdings Ltd | Construction | 2021 |
| Donkris Limited | Real estate | 2023 |
| Donlow Fininvest Limited | Financial services | 2020 |
| Donna Hair Design Ltd | Other services | 2020 |
| Donnarose Estate Agents Limited | Real estate | 2006 |
| Donnas Pitstop Ltd | Hospitality | 2025 |
| Donnersty Nottingham Limited | Hospitality | 2025 |
| Donnington Housing Estates Limited | Real estate | 1946 |
| Donorcloud Limited | Information & communication | 2023 |
| Dontgotodramaschool.Com Ltd | Education | 2020 |
| Doobedoo Music Limited | Information & communication | 2014 |
| Doobedoo Records Ltd | Arts & recreation | 2016 |
| Door & Maintenance Limited | Extraterritorial | 2010 |
| Door 57 Ltd | Hospitality | 2019 |
| Door Twelve Spirits Limited | Wholesale & retail | 2026 |
| DOOR2DOOR Handyman Services Ltd | Other services | 2012 |
| Doorlock Limited | Professional & scientific | 2001 |
| Doors & Windows Direct Limited | Construction | 2000 |
| Doorsinc. Ltd | Construction | 2023 |
| Doorstep Desserts (Nottingham) Limited | Wholesale & retail | 2022 |
| Doosan Precision Engineering Limited | Manufacturing | 2010 |
| Dorans Autos Ltd | Wholesale & retail | 2018 |
| Dorchester Care Holdings Ltd | Financial services | 2024 |
| Dorchester Jewellers Ltd | Wholesale & retail | 2008 |
| Dorian Trans Ltd | Wholesale & retail | 2015 |
| Doricavido Limited | Health & social care | 2013 |