| Cornerstone Homes (Surbiton) Limited | Construction | 2015 |
| Cornerstone Homes Limited | Construction | 2007 |
| Corporate & Commercial Printing Limited | Manufacturing | 2000 |
| COS of London (Retail) Limited | Wholesale & retail | 2002 |
| Costa Benefits Limited | Other services | 2016 |
| Costa Invest Limited | Other services | 2024 |
| Cosybox Holly Lodge Holdings Ltd | Financial services | 2019 |
| Cosybox Holly Lodge Ltd | Construction | 2015 |
| Cove Property Holdings Limited | Financial services | 2026 |
| Cpjr Studios Ltd | Arts & recreation | 2022 |
| CRAFT4SMILES C.I.C. | Wholesale & retail | 2019 |
| Crego Properties Limited | Construction | 1977 |
| Cresta Enterprise Ltd | Professional & scientific | 2014 |
| Crowdminds Limited | Information & communication | 2013 |
| CSN Assets Limited | Construction | 2018 |
| Cubed Consult Limited | Professional & scientific | 2019 |
| D Tega Transport Limited | Transport & logistics | 2018 |
| D2C Limited | Wholesale & retail | 1999 |
| Da&R Enterprises Ltd | Real estate | 2017 |
| David N Reynolds Limited | Professional & scientific | 2015 |
| Decland Limited | Information & communication | 2005 |
| Deeney Properties Limited | Real estate | 2022 |
| Developing Markets Associates Ltd | Administrative & support | 2007 |
| DI Stefano Property Management Limited | Real estate | 2005 |
| Digit Content Services Limited | Information & communication | 2008 |
| Distributed Dots Limited | Professional & scientific | 2020 |
| Dkbt Limited | Real estate | 2019 |
| DMA Global Limited | Administrative & support | 2015 |
| DMA Invest Limited | Administrative & support | 2015 |
| DOM Wolf Ltd | Wholesale & retail | 2024 |
| Dorset Building & Roofing Ltd | Construction | 2020 |
| Douglas Silas Solicitors Limited | Professional & scientific | 2017 |
| Duces Holding Limited | Construction | 2024 |
| Durable Estates Limited | Real estate | 2002 |
| Eagle Aspect Ltd | Professional & scientific | 2020 |
| Ealing Books Limited | Wholesale & retail | 2015 |
| Easy Bite Limited | Real estate | 1996 |
| Ecci Europe Ltd | Wholesale & retail | 2023 |
| Eclectica Jewellery Limited | Wholesale & retail | 2002 |
| Eclipse Time Ltd | Other services | 2005 |
| Eco Energy Electrical Ltd | Construction | 2023 |
| ECS Umbrella Limited | Administrative & support | 2019 |
| Ehec Limited | Professional & scientific | 2006 |
| Elder Developments (Greyfriars) Limited | Real estate | 2023 |
| Elder Holdings Limited | Financial services | 2023 |
| Electrics 24 -7 Limited | Construction | 2019 |
| Elegant Fragrances London Ltd | Wholesale & retail | 2025 |
| Elen Rivas Beauty Clinic Ltd | Health & social care | 2022 |
| Elina Afentaki Ltd | Wholesale & retail | 2022 |
| Elite Health & Fitness Lisburn Limited | Arts & recreation | 2015 |
| Elmswood Manor Ltd | Real estate | 2016 |
| Emanex Limited | Real estate | 1997 |
| Emirates Petrochemical Services (UK) Limited | Agriculture & fishing | 1998 |
| Empire Concrete Pumping Limited | Construction | 2018 |
| Eurolink Property Services Limited | Real estate | 1991 |
| Euromarket Designs, Inc. | | 1993 |
| Every Time Limited | Wholesale & retail | 2024 |
| Excellent Training Company Limited | Arts & recreation | 2003 |
| Express Rent-A-Car Limited | Administrative & support | 1991 |
| Fair Properties and Investments Ltd | Real estate | 2023 |
| Fairlight Investments Ltd | Real estate | 2025 |
| Fawngrove Limited | Wholesale & retail | 1968 |
| FCC Industrial UK Limited | Construction | 2011 |
| Fidarpartners Limited | Wholesale & retail | 2019 |
| Film First Holdings Ltd | Financial services | 2025 |
| Film First Limited | Information & communication | 2021 |
| Film First Payments Limited | Administrative & support | 2024 |
| Film First Security Limited | Administrative & support | 2017 |
| Film First Services Ltd | Administrative & support | 2025 |
| FIN and Earth Ltd | Wholesale & retail | 2019 |
| Fincloon Architects Ltd | Professional & scientific | 2025 |
| First Class Flooring Limited | Construction | 2023 |
| Fitzvernon Ltd | Professional & scientific | 2024 |
| Fkst Limited | Extraterritorial | 1997 |
| Flamencovision Limited | Wholesale & retail | 1990 |
| Fleetwick International Limited | Other services | 1980 |
| Flexinfinity Future Minds Limited | Information & communication | 2019 |
| Forlonville Properties Ltd | Real estate | 2010 |
| Fortis Alliance LLP | | 2007 |
| FP UK Operations Limited | Arts & recreation | 2026 |
| Francesco Sansostri Architects Limited | Construction | 2008 |
| Frank Rivett & Sons (Funeral Directors) Limited | Other services | 1969 |
| Frapa Food & Beverage Consultant Ltd | Hospitality | 2025 |
| Fraymans Limited | Administrative & support | 2001 |
| Free Office Search Ltd | Real estate | 2019 |
| Freeda Milston Cedar Baker Ltd | Professional & scientific | 1994 |
| Freeman Accounting Solutions Limited | Professional & scientific | 2020 |
| G.R.B. Registrars Limited | Administrative & support | 1980 |
| Garnet Bridging Limited | Financial services | 2021 |
| Gatefield Estates Limited | Real estate | 2004 |
| GB Armiya Ltd | Transport & logistics | 2024 |
| GB Aspire Ltd | Transport & logistics | 2023 |
| GB AZ Cars Ltd | Wholesale & retail | 2023 |
| GB Cross Road Ltd | Transport & logistics | 2022 |
| GB PAR Ltd | Transport & logistics | 2024 |
| GB Waste Services Limited | Water & waste | 2025 |
| GCG Global Limited | Professional & scientific | 2022 |
| Gemvine Limited | Wholesale & retail | 1994 |
| GET Gorgeous London Ltd | Wholesale & retail | 2019 |
| Gibbstone Property London Ltd | Real estate | 2026 |