| Crown Associates International Ltd | Extraterritorial | 2008 |
| Crown Cloud AI Limited | Information & communication | 2025 |
| Crown Traders Ltd | Wholesale & retail | 2024 |
| Crowthorne Management Company Limited | Households | 2025 |
| Crowzon Developments Ltd | Construction | 2024 |
| CRT Lunns Limited | Construction | 2022 |
| Crumble Desserts Ltd | Hospitality | 2025 |
| Crystal Hire Limited | Other services | 2006 |
| CSC Safety Solutions Ltd | Construction | 2026 |
| Ctxed Ltd | Information & communication | 2025 |
| Cultivate Market Gardens C.I.C. | Wholesale & retail | 2021 |
| Cuppa Snack Ltd | Manufacturing | 2025 |
| Curated Tributes Limited | Professional & scientific | 2025 |
| Curelocums Limited | Wholesale & retail | 2024 |
| Cutting Edge Hair Co. Ltd | Other services | 2019 |
| Cutting Edge Property PVT Ltd | Real estate | 2025 |
| CWB Solutions Ltd | Construction | 2021 |
| Cwpg Groundworks Ltd | Administrative & support | 2025 |
| CX Advanced Ltd | Professional & scientific | 2025 |
| Cyber Guard Services Ltd | Information & communication | 2019 |
| CYBERVIEW360 Ltd | Professional & scientific | 2020 |
| Cydaps Technologies LLP | | 2017 |
| D & F Group Ltd | Information & communication | 2025 |
| D & P Coaches Limited | Transport & logistics | 2001 |
| D & R Wheatley Holdings Ltd | Financial services | 2021 |
| D & Z Bathrooms, Plumbing & Heating Ltd | Construction | 2023 |
| D and C Associates (UK) Limited | Other services | 1999 |
| D G Angus Ltd | Construction | 2018 |
| D Jones Accountancy Limited | Professional & scientific | 2024 |
| D Munns Bathrooms Ltd | Construction | 2016 |
| D Ride Development Limited | Construction | 2022 |
| D&K Accounting Solutions Limited | Professional & scientific | 2021 |
| D&T Landscapes Limited | Construction | 2025 |
| D.Bhalli Limited | Wholesale & retail | 2024 |
| D.O.Y Aldershot Ltd | Hospitality | 2023 |
| D2S Construction Limited | Construction | 2017 |
| D5 Homes Ltd | Construction | 2024 |
| DA Vinchi Developments Ltd | Construction | 2010 |
| Da&Ab Limited | Energy | 2025 |
| Daehan Drama Ltd | Information & communication | 2014 |
| Daily Client Ltd | Information & communication | 2024 |
| Daisy Nursery Ltd | Health & social care | 2009 |
| Dalboth Management Services Limited | Professional & scientific | 2017 |
| Damc Chefs Services Limited | Administrative & support | 2025 |
| Damson Investment Limited | Real estate | 2024 |
| Damson Livestock Limited | Agriculture & fishing | 2020 |
| DAN Grove Consulting Ltd | Information & communication | 2023 |
| Daniel Tilley Analytic Solutions Limited | Public administration | 2020 |
| Danphe Mobile Tyre & Mechanic Ltd | Manufacturing | 2026 |
| Danvers Property Management Limited | Administrative & support | 2016 |
| Dany Care Ltd | Health & social care | 2021 |
| Darren Dent Limited | Wholesale & retail | 2014 |
| Das&Devi Industries LIC UK PVT Ltd | Manufacturing | 2026 |
| Datastreamiq Limited | Information & communication | 2023 |
| David Brown Catering Limited | Hospitality | 1998 |
| David DE Haas Limited | Professional & scientific | 2015 |
| Davidhooker Limited | Construction | 2025 |
| Davinia Watson Art Ltd | Arts & recreation | 2025 |
| Dawnstar Installations Ltd | Construction | 2019 |
| Daxlite Limited | Manufacturing | 2012 |
| Daytona Services Ltd. | Manufacturing | 1998 |
| Dayvoy Ltd | Information & communication | 2026 |
| DBK Auto Repairs Limited | Wholesale & retail | 2010 |
| DC Electrical & Property Services Ltd | Construction | 2021 |
| DCB Properties Limited | Real estate | 2026 |
| DCV Precision Limited | Manufacturing | 2003 |
| DD Alliance Ltd | Wholesale & retail | 2024 |
| DD Hire Services Limited | Other services | 2002 |
| DDR Group Ltd | Construction | 2021 |
| DE Lounge Ltd | Hospitality | 2018 |
| DE Pasquale & Tampin Holdings Ltd | Real estate | 2025 |
| Debbre Arts and Events Ltd | Real estate | 2023 |
| Decipher IT Consultancy Ltd | Information & communication | 2015 |
| Decorez Limited | Construction | 2021 |
| Dedicated Health & Safety Limited | Professional & scientific | 2016 |
| Defence Contractors Limited | Public administration | 2006 |
| Definity Markets Limited | Financial services | 2020 |
| DEL Mostruoso Ltd | Agriculture & fishing | 2025 |
| Delaala Company Limited | Health & social care | 2022 |
| Delaris Promotions Ltd | Professional & scientific | 2019 |
| Delight Coaching Ltd | Arts & recreation | 2026 |
| Delta Heating & Plumbing Limited | Construction | 2022 |
| Dentscratch Ltd | Wholesale & retail | 2014 |
| DEP Solutions UK Ltd | Construction | 2025 |
| Design and Solutions Limited | Information & communication | 2012 |
| Design Creators Ltd | Extraterritorial | 2006 |
| Designpad Ltd | Professional & scientific | 2022 |
| Designs for ALL Seasons Limited | Administrative & support | 2014 |
| Desirabilitee Limited | Wholesale & retail | 2009 |
| Desolen TCG Ltd | Wholesale & retail | 2025 |
| Destination Momo Ltd | Hospitality | 2020 |
| Deva Supplements Ltd | Wholesale & retail | 2025 |
| Devsecops LAB Ltd | Information & communication | 2023 |
| Dexter Claw Ltd | Professional & scientific | 2015 |
| Dexter Couriers Ltd | Transport & logistics | 2023 |
| Deyeboah Cleaning Services Limited | Administrative & support | 2023 |
| DG Financial Solutions Ltd | Professional & scientific | 2024 |
| DG Leto Ltd | Administrative & support | 2026 |
| DG Property Refurbishment Ltd | Construction | 2012 |
| DGA Services Ltd | Transport & logistics | 2016 |