| CV Viabilities Ltd | Professional & scientific | 2026 |
| Cvaniacy Ltd | Administrative & support | 2024 |
| CW & DK Limited | Other services | 2022 |
| CW Car Sales and Rentals Ltd | Wholesale & retail | 2020 |
| CW Installations Limited | Construction | 2020 |
| Cyanbuild Limited | Construction | 2008 |
| Cyber SRG Limited | Information & communication | 2018 |
| Cyrus Guys Ltd | Hospitality | 2023 |
| D & a Vehicle Solutions Limited | Wholesale & retail | 2015 |
| D & C Solomon Ltd | Health & social care | 2023 |
| D & C Stone Properties Limited | Construction | 2019 |
| D & D Shopfitters Limited | Construction | 2018 |
| D & L Design Services Limited | Real estate | 2017 |
| D & L Property Holdings Ltd | Real estate | 2025 |
| D & S Richardson Properties Limited | Real estate | 2019 |
| D & T Netherwood Ltd | Construction | 2022 |
| D B Chapman Ltd | Wholesale & retail | 2007 |
| D Brown Builders Limited | Construction | 2013 |
| D C Contracts Ossett Limited | Manufacturing | 2016 |
| D C Enterprises (Leeds) Limited | Construction | 2000 |
| D Dalton Holdings Ltd | Information & communication | 2026 |
| D Edge Training Ltd | Education | 2019 |
| D G Sanderson Groundworks Limited | Construction | 2007 |
| D H Lifting & Crane Services Limited | Construction | 2015 |
| D J P Rayner Window Cleaning Limited | Administrative & support | 2007 |
| D K Emms Roofing Contractors Ltd | Administrative & support | 2010 |
| D K Hira Stores Ltd | Wholesale & retail | 2024 |
| D L Roofing & Plastic Specialists Ltd | Construction | 2024 |
| D Lambert Limited | Construction | 2011 |
| D M Installs Ltd | Manufacturing | 2025 |
| D M Pickles Limited | Agriculture & fishing | 2002 |
| D Machines Ltd | Other services | 2025 |
| D N R Groundworks Ltd | Construction | 2025 |
| D P Good Construction Limited | Construction | 2016 |
| D P Vehicle Accessory Installations Limited | Administrative & support | 2010 |
| D R I Ceilings Limited | Construction | 2007 |
| D S Property Company Limited | Real estate | 2002 |
| D&G ALL Season Ltd | Administrative & support | 2025 |
| D&J Mcguinness Personal Finance Ltd | Financial services | 2002 |
| D&O Cars Ltd | Wholesale & retail | 2024 |
| D&P Group Holdings Limited | Financial services | 2022 |
| D&P Group Limited | Financial services | 2015 |
| D&S Building Maintenance Ltd | Construction | 2014 |
| D'Abundo Commercial Property Ltd | Real estate | 2026 |
| D'Abundo Property Limited | Real estate | 2024 |
| D'Jez Solution Ltd | Wholesale & retail | 2026 |
| D'Polaris Serene Private Ltd | Households | 2024 |
| D-Tec Automotive Limited | Wholesale & retail | 2016 |
| D. Newton Plant Services Limited | Professional & scientific | 2015 |
| D.C. & Sons Joinery Ltd | Construction | 2013 |
| D.Sainter & Sons Limited | Extraterritorial | 1950 |
| D.W. Wilson (Family Butchers) Ltd | Wholesale & retail | 2001 |
| DA Shop Fitters Ltd | Construction | 2012 |
| DA Smart Repairs Ltd | Wholesale & retail | 2026 |
| Dabul Ltd | Wholesale & retail | 2018 |
| Dactech Limited | Construction | 2021 |
| Daddley's Wood Management Limited | Real estate | 2022 |
| Daft COW Print Studio Limited | Manufacturing | 2024 |
| Daha Global Ltd | Wholesale & retail | 2026 |
| Dahen Property Management Limited | Real estate | 2025 |
| Daily B Ltd | Administrative & support | 2024 |
| Dainty Nicholson & Co Ltd | Real estate | 2025 |
| Dairy Specialist Consultancy Limited | Professional & scientific | 2023 |
| Daks Driveways Ltd | Construction | 2016 |
| Dale&Dans Developments Ltd | Construction | 2020 |
| Daley Plumbing and Heating Limited | Construction | 2010 |
| Dalia Botanique Ltd | Wholesale & retail | 2023 |
| Daliasaleshue Ltd | Wholesale & retail | 2025 |
| Dalsetter Rosettes Limited | Manufacturing | 2004 |
| Dammy's Kitchen UK and Catering Limited | Hospitality | 2023 |
| DAN Maltby Bloodstock Limited | Arts & recreation | 2019 |
| Danbofit Coaching Ltd | Arts & recreation | 2025 |
| Danbofit Ltd | Arts & recreation | 2021 |
| Dance Supply Centre Ltd | Wholesale & retail | 2024 |
| Dance Through the Ages Ltd | Other services | 2021 |
| Dancexplosion Ltd | Education | 2022 |
| Dancola Ltd | Education | 2024 |
| Danea Properties Ltd. | Real estate | 2019 |
| Danec Limited | Real estate | 2024 |
| Danford Developments Limited | Real estate | 2021 |
| Danhart Limited | Real estate | 2025 |
| Daniel 25 Ltd | Other services | 2025 |
| Danish Kashmiri Catering & Food 2 Go Ltd | Hospitality | 2023 |
| Danny'Scollective Ltd | Professional & scientific | 2025 |
| Danson Capital Limited | Real estate | 2023 |
| Daria Ponte Ltd | Transport & logistics | 2018 |
| Dark Cherry Creative Ltd | Professional & scientific | 2018 |
| Dark Industries Limited | Financial services | 2024 |
| Darkside Consultants Limited | Hospitality | 2013 |
| DARKSKY3D Ltd | Manufacturing | 2026 |
| Darning Ltd | Health & social care | 2022 |
| Darren Lord Ltd | Financial services | 2024 |
| Dartmouth Park Associates Ltd | Professional & scientific | 2017 |
| Darton Lane Management Company Limited | Real estate | 1998 |
| Darwingrove Limited | Administrative & support | 1994 |
| Daryl Topliss Properties Limited | Real estate | 2003 |
| DAS Joinery Ltd | Construction | 2019 |
| Das's Pizza Ltd | Hospitality | 2020 |
| Daso Media Ltd | Professional & scientific | 2025 |
| Data Air Limited | Information & communication | 2019 |