| Designer Legacy Ltd | Administrative & support | 2025 |
| Desire Hair and Cosmetics Ltd | Other services | 2019 |
| Desperate Measures (GB) Ltd | Wholesale & retail | 2012 |
| Desserts at Cocoa Ltd | Hospitality | 2020 |
| Destinesia Limited | Financial services | 2015 |
| Devicon Ltd | Information & communication | 2025 |
| Devol EBT Limited | Administrative & support | 2026 |
| Devol Holdings Limited | Financial services | 2024 |
| Devol Innovations LLP | | 2020 |
| Devol Kitchens Limited | Manufacturing | 2008 |
| Devol Properties Limited | Real estate | 2023 |
| Devonshire Advisory Limited | Professional & scientific | 2019 |
| DEW Drop Cleaning Ltd | Administrative & support | 2021 |
| DEW Drop, Hathern Limited | Hospitality | 2024 |
| Dewdrop Crafts Limited | Administrative & support | 2021 |
| DFF Distributions Ltd | Wholesale & retail | 2026 |
| DFO Stapleton Ltd | Wholesale & retail | 2023 |
| DG Legal Limited | Professional & scientific | 2012 |
| DGM Agency Ltd | Wholesale & retail | 2015 |
| DGM Builders Limited | Construction | 2003 |
| DGS Group PLC | Wholesale & retail | 1979 |
| Dhamrait Properties Limited | Real estate | 2021 |
| DHD Snkrs Ltd | Financial services | 2023 |
| Dhinvi Ltd | Real estate | 2024 |
| Dhmd Limited | Education | 2025 |
| Diamond Detailing Ltd | Wholesale & retail | 2016 |
| Diamondbay Limited | Real estate | 2001 |
| Didi Leicester Limited | Education | 2020 |
| Didi Rugby Loughborough Limited | Other services | 2023 |
| Diesel & Electric Locomotive Servicing Ltd | Professional & scientific | 2012 |
| Digieye Limited | Extraterritorial | 2001 |
| Digital Armoury Designs Ltd | Wholesale & retail | 2023 |
| Digital Deadline Limited | Manufacturing | 2012 |
| Digital Fish Ltd | Information & communication | 2011 |
| Digital Office Holdings Limited | Financial services | 2005 |
| Digital Office Systems Limited | Administrative & support | 1994 |
| Digital Technologies and Social Inclusion Group (Dtsi) CIC | Information & communication | 2015 |
| Digital Transitions Limited | Information & communication | 2021 |
| Digni Go Limited | Manufacturing | 2025 |
| Dignity Developments Limited | Construction | 2007 |
| Dikodi Ltd | Transport & logistics | 2011 |
| Dimva Ltd | Transport & logistics | 2024 |
| Dineticq Limited | Information & communication | 2022 |
| Dingley Road Management Ltd | Households | 2019 |
| Dino Buttarazzi Productions Limited | Arts & recreation | 2021 |
| Dion Raif Limited | Wholesale & retail | 2021 |
| Direct Control Building Services Ltd | Real estate | 2024 |
| Direct Electric Limited | Extraterritorial | 1996 |
| Direct Fencing and Contracting Limited | Construction | 2018 |
| Discosmash Limited | Manufacturing | 2009 |
| Discrestore.Co.Uk Ltd | Wholesale & retail | 2023 |
| Dishley Commercial Interiors Limited | Construction | 2013 |
| Dishley Mill Developments Limited | Construction | 2015 |
| Dishley Plumbing and Heating Ltd | Construction | 2011 |
| Distillers Direct Ltd | Wholesale & retail | 2015 |
| District Football Limited | Administrative & support | 2014 |
| Diversely Ltd | Professional & scientific | 2021 |
| Divine Mortgages Ltd | Real estate | 2021 |
| Division Constellation ( UK) Ltd | Administrative & support | 2023 |
| Divitiae Property Limited | Real estate | 2024 |
| Dj-Jda Limited | Real estate | 2022 |
| DJ. T Properties Ltd | Real estate | 1998 |
| Djinja-C Limited | Information & communication | 2026 |
| Djjb Ltd. | Information & communication | 2015 |
| DJP Gifts Ltd | Wholesale & retail | 2013 |
| DJR Mortgages Limited | Financial services | 2025 |
| Djrf Limited | Financial services | 2021 |
| DJT 2 Limited | Real estate | 2021 |
| DK GAS Professional Ltd | Construction | 2019 |
| DKH Advisory Ltd | Professional & scientific | 2025 |
| DKH Health Limited | Health & social care | 2019 |
| DL Pharma Consulting Limited | Professional & scientific | 2012 |
| DLN Security Ltd | Administrative & support | 2026 |
| DLT Property Limited | Real estate | 2024 |
| DLW Properties Mansfield Limited | Real estate | 2024 |
| DM Squared Fitness Limited | Arts & recreation | 2026 |
| DMB Consultancy Services Ltd | Professional & scientific | 2018 |
| DMG Professional Limited | Professional & scientific | 2022 |
| DMH Wine Consultancy Limited | Professional & scientific | 2021 |
| DN Performance Limited | Arts & recreation | 2018 |
| DNT Solutions Ltd | Wholesale & retail | 2019 |
| DNY Logistics Ltd | Transport & logistics | 2024 |
| Dobb Industries Limited | Professional & scientific | 2020 |
| Dobson’S Dining Ltd | Hospitality | 2024 |
| Dodici Otto 12.8 Limited | Professional & scientific | 2023 |
| Dogblack Holdings Limited | Financial services | 2025 |
| Dogefood Limited | Wholesale & retail | 2021 |
| Dogu Ltd | Other services | 2021 |
| Doherty Grab Services Limited | Water & waste | 2025 |
| Domesty Limited | Information & communication | 2024 |
| Dominics Loughborough Limited | Hospitality | 2019 |
| Doncadtech Limited | Construction | 2018 |
| Doner Master Leicester Limited | Hospitality | 2023 |
| Donington Museums Limited | Extraterritorial | 1989 |
| Donington Park Racing Limited | Professional & scientific | 2013 |
| Donkey Digs Limited | Real estate | 2012 |
| Donner Master Limited | Hospitality | 2026 |
| Donny Solutions Ltd | Wholesale & retail | 2026 |
| Donorfy Limited | Information & communication | 2014 |
| Door NO.303 Holdings Limited | Real estate | 2025 |