| DDC Recruit Limited | Extraterritorial | 2004 |
| Ddeluxe Decor Ltd | Extraterritorial | 2025 |
| DDF Electrical Midlands Limited | Construction | 2026 |
| DDF Hospitality Ltd | Hospitality | 2024 |
| DDG Plating Limited | Manufacturing | 2013 |
| DDJ Courier & Services Ltd | Transport & logistics | 2023 |
| DDL Advisory Ltd | Professional & scientific | 2022 |
| DDL Catering Limited | Hospitality | 2025 |
| DDL PAT Testing Ltd | Professional & scientific | 2015 |
| DDL Vans Ltd | Transport & logistics | 2025 |
| DDL91 Limited | Information & communication | 2026 |
| DDM Associates Limited | Professional & scientific | 2009 |
| DDM Electrical Solutions Ltd | Construction | 2023 |
| Ddpc Limited | Health & social care | 2012 |
| DDS Housing Limited | Real estate | 2024 |
| Ddsm Tech Limited | Information & communication | 2017 |
| DDW Joinery Limited | Construction | 2026 |
| Dd’S Delight Enterprises Ltd | Manufacturing | 2026 |
| DE & DE Midway Healthcare Services Limited | Health & social care | 2020 |
| DE & KU Properties Ltd | Real estate | 2024 |
| DE Connexions Ltd | Transport & logistics | 2013 |
| DE Facto Design Limited | Professional & scientific | 1996 |
| DE Gois SA Limited | Health & social care | 2026 |
| DE Grill Kitchen Ltd | Hospitality | 2024 |
| DE Jong Property Limited | Real estate | 2022 |
| DE Montfort Street LLP | | 2019 |
| DE Santis Properties Ltd. | Real estate | 1995 |
| DE-Q2C Ltd | Information & communication | 2021 |
| DE01 EXE Ltd | Real estate | 2016 |
| DE1 Ltd | Real estate | 2016 |
| DE1 Rentco Limited | Real estate | 2026 |
| DE5 Consulting Limited | Professional & scientific | 2013 |
| Dead Again Ltd | Manufacturing | 2025 |
| Dead Cats Can'T Dance (DC2D) Limited | Information & communication | 2001 |
| Dead Cities Limited | Arts & recreation | 2014 |
| Dead Good Publishing Limited | Information & communication | 2013 |
| Dead Sweet TV Ltd | Information & communication | 2021 |
| Deadbox Records Ltd | Arts & recreation | 2018 |
| Deadpan AI Ltd | Information & communication | 2020 |
| Deaf Limited | Real estate | 2017 |
| Deaf Tech Ltd | Information & communication | 2022 |
| Deaf Technologies Limited | Financial services | 2025 |
| Deakes Consultants Ltd | Professional & scientific | 2010 |
| Deakin Estates Limited | Households | 1994 |
| Deal Box Limited | Wholesale & retail | 2012 |
| Deal Docker Ltd | Wholesale & retail | 2026 |
| Deal Driven Sales Ltd | Wholesale & retail | 2024 |
| Deal Drop Cosmetix Ltd | Wholesale & retail | 2026 |
| Deal MAX Ltd | Wholesale & retail | 2025 |
| Deal Splash UK Ltd | Manufacturing | 2025 |
| Deal Street Motors Ltd | Wholesale & retail | 2026 |
| Dealbridge Property Limited | Financial services | 2026 |
| Dealmaker Label Limited | Information & communication | 2023 |
| Deals and Lettings Ltd | Households | 2025 |
| Dean Allen Ventures Limited | Financial services | 2025 |
| Dean Jukes Racing Ltd | Arts & recreation | 2024 |
| Dean Laundry Systems Limited | Manufacturing | 2011 |
| Dean Linford Electrical Services Limited | Construction | 2014 |
| Dean Mckay Moving & Storage Limited | Other services | 2015 |
| Dean Property Partners Ltd | Real estate | 2025 |
| Dean Storer Design and Build Limited | Construction | 2019 |
| Deane Close Properties Limited | Real estate | 2025 |
| Deane Design Ltd | Professional & scientific | 2025 |
| Deane Road Nottingham Limited | Households | 2026 |
| Deanrow Investments Limited | Real estate | 1956 |
| Deans Gate (Bestwood) Management Company Limited | Households | 2003 |
| Deans of Nottingham Properties Limited | Construction | 1962 |
| Dearden Wilson Property Ltd | Real estate | 2021 |
| Death Committee Islamgarh Ltd | Other services | 2021 |
| Death Reaper Games Limited | Wholesale & retail | 2025 |
| Deaville-Reed Ltd. | Arts & recreation | 2017 |
| Debats (Civil Engineering) Limited | Other services | 2024 |
| Debbie Abrahams Ltd | Wholesale & retail | 2015 |
| Debbie Bryan Limited | Wholesale & retail | 2007 |
| Debbie DAV and Sons Limited | Households | 2025 |
| Debbieignites Innovations Ltd | Information & communication | 2025 |
| Debcott Limited | Professional & scientific | 2015 |
| Debcott Property Holdings Limited | Real estate | 2017 |
| Deboard Limited | Extraterritorial | 2018 |
| Debonair Cards Ltd | Wholesale & retail | 2025 |
| Deborah Williams Hairdressing Salon Limited | Other services | 2005 |
| Debrogold Limited | Administrative & support | 1989 |
| Debt Limited | Professional & scientific | 2020 |
| Debt Management & Recovery Associates Limited | Financial services | 2020 |
| Deca Holdings (UK) Ltd | Real estate | 2020 |
| Decco Domestic Ltd | Construction | 2026 |
| Decco Painting Contractors Ltd | Construction | 2025 |
| Decimus Corp Ventures Ltd | Information & communication | 2025 |
| Decision Vision Ltd | Information & communication | 2009 |
| Decisionz Limited | Information & communication | 2019 |
| Deckchair Barbering and Hairdressing Ltd | Extraterritorial | 2017 |
| Deco Design Limited | Construction | 2014 |
| Deco Family Ltd | Administrative & support | 2023 |
| Decodearchitecture Ltd | Professional & scientific | 2018 |
| Decomar Ltd | Professional & scientific | 2024 |
| Decor Planet Supplies Limited | Wholesale & retail | 2024 |
| Decor Planet Supply Ltd | Wholesale & retail | 2026 |
| DECOR8 Painting Services Limited | Construction | 2019 |
| Decorad Property Maintenance Services Limited | Construction | 2017 |
| Decorative Acrylic Co. Limited | Extraterritorial | 1965 |