| Dorkei Ltd | Real estate | 2024 |
| Dornor Care Services Ltd | Health & social care | 2015 |
| Dorota Stays Ltd | Hospitality | 2026 |
| Dorothy Boot Management Ltd | Real estate | 2019 |
| Dorothy MAY Bakes Ltd | Hospitality | 2021 |
| Dorset Best CUT Ltd | Other services | 2026 |
| Dorsi Spinal Ltd | Health & social care | 2016 |
| Dorsland Services Ltd | Information & communication | 2016 |
| Doru ANA Ltd | Information & communication | 2025 |
| DOS Alfreton UK Limited | Hospitality | 2025 |
| DOS Tints Ltd | Wholesale & retail | 2025 |
| Dosa Limited | Hospitality | 2019 |
| Dosa Planet UK Ltd | Hospitality | 2021 |
| Dosa Wala UK Ltd | Hospitality | 2021 |
| Dosette.Com Ltd | Wholesale & retail | 2017 |
| DOT Nine Solutions Ltd | Information & communication | 2008 |
| DOT Social Marketing Ltd | Administrative & support | 2023 |
| Dotdotdot Design Ltd | Professional & scientific | 2020 |
| Dots Luggage Limited | Wholesale & retail | 2024 |
| Double 'M' (Nottingham) Limited | Manufacturing | 1982 |
| Double Debug Limited | Information & communication | 2021 |
| Double Entry Ltd | Professional & scientific | 2025 |
| Double Impact Services | Health & social care | 2006 |
| Double Impact Synergy CIC | Health & social care | 2013 |
| Double M Properties Ltd | Construction | 2026 |
| Double One Five Limited | Information & communication | 2021 |
| Double Positive (UK) Limited | Other services | 2010 |
| Double R Motors Nottingham Ltd | Wholesale & retail | 2024 |
| Double T Development Ltd | Administrative & support | 2014 |
| Double-Jv Limited | Health & social care | 2025 |
| Doublecream Limited | Information & communication | 2012 |
| Doubloon Marketing Limited | Professional & scientific | 2020 |
| Dough a Deer: Wood Fired Pizzas Limited | Hospitality | 2022 |
| Dough N Buns Ltd | Hospitality | 2023 |
| Doughco Limited | Hospitality | 2020 |
| Doughnotts Beeston Ltd | Wholesale & retail | 2021 |
| Doughty Solutions Limited | Construction | 2016 |
| Douglas Carpet Fitters (DCF) Ltd | Wholesale & retail | 2025 |
| Douglas Court Management Company (Nottingham) Limited | Households | 1992 |
| Douglas Gill International Limited | Manufacturing | 1985 |
| Douglin Limited | Health & social care | 2025 |
| Dovandale Taxis Ltd | Other services | 2019 |
| Dove and Hawk Recruitment UK Ltd | Administrative & support | 2026 |
| Dove Caring Ltd | Health & social care | 2014 |
| Dove Civils Limited | Construction | 2020 |
| Dovecote Lane Holdings Limited | Real estate | 2022 |
| Dovecote Management Limited | Households | 1986 |
| Dovecraft (UK) Limited | Manufacturing | 2002 |
| Dovekie Strategic Consultation (UK) Limited | Professional & scientific | 2021 |
| Dovely Limited | Other services | 2021 |
| Dover Beck Properties Limited | Real estate | 2015 |
| Dover Street Marketing Ltd | Manufacturing | 2013 |
| Doves Limited | Extraterritorial | 1985 |
| Dovestone Holiday Park Limited | Hospitality | 1996 |
| Dovetail (UK) Limited | Wholesale & retail | 1997 |
| Dovetail Wood Ltd | Manufacturing | 2003 |
| Down to Earth Demolition Ltd | Construction | 2009 |
| Downey Caring Services Limited | Health & social care | 2021 |
| Downsview Motors Limited | Wholesale & retail | 2015 |
| Downtown Homes Ltd | Real estate | 2018 |
| Dowp Limited | Arts & recreation | 2024 |
| Doyen Cema Associates Ltd | Other services | 2025 |
| Dozen Donuts Ltd | Hospitality | 2020 |
| DP Bidco Limited | Professional & scientific | 2012 |
| DP Brandco Limited | Professional & scientific | 2012 |
| DP Group Holdings Limited | Financial services | 2019 |
| DP Urology Services Limited | Health & social care | 2013 |
| Dparker Electrical Ltd | Construction | 2025 |
| Dpaz Ltd | Wholesale & retail | 2017 |
| DPC International Limited | Wholesale & retail | 2019 |
| DPC Wall Doctor Limited | Construction | 2024 |
| DPF Decorators Ltd | Construction | 2021 |
| DPG Building Consultants Limited | Professional & scientific | 2020 |
| DPG SK Limited | Real estate | 2021 |
| DPK Consultancy Ltd | Education | 2025 |
| DPP Copmasites Limited | Manufacturing | 2025 |
| Dpph Ltd | Real estate | 2018 |
| Dpph Properties Ltd | Real estate | 2024 |
| DPR Consultants Limited | Professional & scientific | 2015 |
| DPS (Electrical) Limited | Professional & scientific | 2003 |
| DPS Ecotech Limited | Energy | 2011 |
| DPY Ltd | Households | 2022 |
| DQ Commercial Vehicle Services Ltd | Wholesale & retail | 2024 |
| DQF Limited | Construction | 2008 |
| DR & JP Limited | Real estate | 2024 |
| DR a Yasmin Limited | Health & social care | 2014 |
| DR Ahmad Enterprises Ltd | Health & social care | 2025 |
| DR Alamgir Khan Limited | Health & social care | 2025 |
| DR Anran Ltd | Professional & scientific | 2024 |
| DR Assist Ltd | Transport & logistics | 2025 |
| DR Athir Ltd | Health & social care | 2023 |
| DR Bernard Horsford Ltd | Wholesale & retail | 2016 |
| DR Chris Gornall Limited | Health & social care | 2019 |
| DR Clare Defty Ltd | Health & social care | 2020 |
| DR Design Solutions Limited | Professional & scientific | 2017 |
| DR Dina Skin Clinic Ltd. | Other services | 2013 |
| DR Foster Limited | Administrative & support | 1999 |
| DR Foster Research Limited | Administrative & support | 2005 |
| DR Haneen ALI Limited | Health & social care | 2021 |
| DR HE Consultancy Limited | Professional & scientific | 2024 |