| Crest Nicholson Residential (South East) Limited | Professional & scientific | 1961 |
| Crest Nicholson Residential (South) Limited | Professional & scientific | 1981 |
| Crest Nicholson Residential Limited | Professional & scientific | 1962 |
| Crest Oral Ltd | Health & social care | 2011 |
| Crest Partnership Homes Limited | Professional & scientific | 1966 |
| Crest Peabody (Turweston) LLP | | 2023 |
| Crest Strategic Projects Limited | Professional & scientific | 2000 |
| Crest/Vistry (Epsom) LLP | | 2007 |
| Crew Construction Limited | Construction | 2009 |
| CRM Made Simple Ltd | Information & communication | 2025 |
| Crng Construction Ltd | Construction | 2022 |
| Crockford Bridge Farms Limited | Agriculture & fishing | 1977 |
| Croftwood Care (Cheshire) Limited | Health & social care | 2016 |
| Croftwood Care Ltd | Health & social care | 2009 |
| Crosology Limited | Financial services | 2024 |
| Crosspoint Solutions Business Ltd | Administrative & support | 2025 |
| Crown and Silk Ltd | Manufacturing | 2026 |
| Crown Construction Surrey Ltd | Construction | 2021 |
| Crown Properties Surrey Ltd | Real estate | 2026 |
| Crownstone Residential Ltd | Real estate | 2025 |
| CRS Security & Concierge Ltd | Transport & logistics | 2016 |
| Cruise Ship Service Limited | Manufacturing | 2021 |
| CRYPTONB1 Ltd | Extraterritorial | 2022 |
| Crystalmere Limited | Construction | 2014 |
| CSL Partnership (Addlestone) Limited | Professional & scientific | 2026 |
| CSL Partnership (Woking) Limited | Professional & scientific | 2026 |
| CSL Partnership Limited | Professional & scientific | 2002 |
| CSM Plumbing Services Limited | Other services | 2010 |
| CST Solutions Ltd | Wholesale & retail | 2006 |
| CTC Europe.Com Limited | Transport & logistics | 1999 |
| Ctkpl Ltd | Hospitality | 2020 |
| Cult Froyo Limited | Hospitality | 2026 |
| Cunningham Law Limited | Professional & scientific | 2022 |
| Cura Research Centre Ltd | Professional & scientific | 2025 |
| Curbridge Meadows (Phase 3) Management Company Limited | Households | 2021 |
| Cure Cube Ltd | Wholesale & retail | 2024 |
| Cyan Logistics Limited | Financial services | 1997 |
| Cygenix Limited | Information & communication | 2024 |
| Cygnet View (Swanland) Management Company Limited | Households | 2024 |
| D & D Events and Catering Services Limited | Hospitality | 2021 |
| D Busby Roofing Limited | Construction | 2014 |
| D&A David Ltd | Hospitality | 2023 |
| D&C David Ltd | Wholesale & retail | 2019 |
| D-Sigma Ltd | Other services | 2020 |
| D.H. Design & Build Limited | Professional & scientific | 2006 |
| D10 Ltd | Manufacturing | 2024 |
| Dale Data Consultancy Limited | Professional & scientific | 2022 |
| Dalton Gardens (Dalton) Management Company Limited | Households | 2025 |
| Danesfield Property Services Limited | Real estate | 2003 |
| Daness Legal Limited | Administrative & support | 2019 |
| Data Elevation Limited | Information & communication | 2014 |
| Data Techniques Ltd | Construction | 2023 |
| David Barker Limited | Manufacturing | 2013 |
| Day and Night Comfort Care Limited | Health & social care | 2024 |
| DB Sales & Marketing Services Limited | Wholesale & retail | 2022 |
| DB1 Solutions Ltd | Information & communication | 2019 |
| DC Electrics Surrey Limited | Construction | 2013 |
| DE Ocampo Care Services Limited | Health & social care | 2025 |
| DE Salis Solutions Ltd | Professional & scientific | 2024 |
| Dechevfx Limited | Transport & logistics | 2019 |
| Deepskim Ltd | Information & communication | 2024 |
| Definition Double Glazing Ltd | Construction | 2020 |
| Deilamy Homes Ltd | Real estate | 2017 |
| Deise Ltd | Information & communication | 2024 |
| Delawen Management Company Limited | Real estate | 1964 |
| Delegate Business Services Ltd | Administrative & support | 2017 |
| Delibarn UK Ltd. | Wholesale & retail | 1985 |
| Delight Food and Wine Limited | Wholesale & retail | 2025 |
| Delos Recruitment Ltd | Administrative & support | 2025 |
| Delta Engineering Services (London) Ltd | Professional & scientific | 2016 |
| Dendy SRL Limited | Transport & logistics | 2017 |
| Dental Glow Solutions Ltd | Health & social care | 2023 |
| Desertspring Consulting Limited | Professional & scientific | 2019 |
| Designer Cherie Ltd | Professional & scientific | 2016 |
| DG Software Limited | Information & communication | 2004 |
| Dhaliwal Investments Limited | Real estate | 2018 |
| Diamond Dog Styling Ltd | Other services | 2021 |
| Diamond House Care Home Limited | Health & social care | 2023 |
| Digital Atlas Limited | Information & communication | 2024 |
| Digitech SOL Limited | Information & communication | 2016 |
| Dimundo UK Limited | Construction | 2011 |
| Directive Property Limited | Real estate | 2021 |
| Ditco Business Services Limited | Professional & scientific | 1988 |
| Dixcart Audit LLP | | 2003 |
| Dixcart International Limited | Professional & scientific | 2007 |
| Dixcart Legal Limited | Professional & scientific | 2013 |
| DJ Yash UK Ltd | Arts & recreation | 2021 |
| DKT Build Ltd | Construction | 2017 |
| DMJ Plumbing and Heating Ltd | Construction | 2025 |
| Dmjk Holdings Limited | Construction | 2025 |
| DML Shipping Limited | Wholesale & retail | 2023 |
| DO IT Write Limited | Information & communication | 2009 |
| DON Cicio Ltd | Hospitality | 2023 |
| DON Papa Ltd | Hospitality | 2023 |
| Don'T Panic Design Ltd | Information & communication | 2016 |
| Dosa Idly Kada Ltd | Wholesale & retail | 2024 |
| Douglas Warwick Ltd | Professional & scientific | 2012 |
| Dowlaty Developments Ltd | Construction | 2020 |
| DP Belle Cars Ltd | Transport & logistics | 2014 |
| DR Afsha Aesthetics Ltd | Other services | 2026 |