| Entire House Clearance Ltd | Transport & logistics | 2022 |
| Entry Point Strategies Limited | Information & communication | 2026 |
| Entry Point Strategy Ltd | Professional & scientific | 2024 |
| Enttekk Ltd | Information & communication | 2024 |
| Environmental Equipment Contracts Limited | Professional & scientific | 1994 |
| Environmental Equipment Corporation Limited | Professional & scientific | 1990 |
| EPS Wisdom Ltd | Transport & logistics | 2020 |
| Equitas Developments Ltd | Professional & scientific | 2022 |
| Ergosec Limited | Information & communication | 2020 |
| Erik Dali Ltd | Hospitality | 2018 |
| Erixon Electrical Services Ltd | Construction | 2021 |
| ES Design Services (SW) Ltd | Construction | 2021 |
| ESC Maintenance Ltd | Information & communication | 2023 |
| Esco Nova Ltd | Wholesale & retail | 2025 |
| Eskimo JO Events Ltd | Administrative & support | 2012 |
| Eskimo JO Ltd | Administrative & support | 2009 |
| Essential Connection London Limited | Other services | 2022 |
| Essex Surgeries Limited | Real estate | 2002 |
| Estrada (EU) Limited | Information & communication | 2003 |
| Eucalyptus Solutions Ltd | Information & communication | 2016 |
| EVE2 Ltd | Arts & recreation | 2015 |
| Event Technology Solution Ltd | Information & communication | 2022 |
| Events & Services Ltd | Hospitality | 2024 |
| Events by Element Ltd | Administrative & support | 2026 |
| Everest & Co Surveying Limited | Professional & scientific | 2013 |
| Evolving Insights Ltd | Professional & scientific | 2020 |
| Exaura Consulting Ltd | Information & communication | 2024 |
| Excellence in ALL Ltd | Construction | 2025 |
| Experi ED Ltd | Arts & recreation | 2019 |
| Expert Care UK Services Ltd | Health & social care | 2017 |
| Extra Clean Limited | Administrative & support | 2021 |
| EZ Paws Ltd | Other services | 2026 |
| Ezyvibes Ltd | Information & communication | 2020 |
| F King Polo Ltd | Arts & recreation | 2012 |
| F2D Business Ltd | Information & communication | 2021 |
| Fasteners Plus Ltd | Manufacturing | 2020 |
| FAT N Famous Grill Ltd | Hospitality | 2025 |
| Fattura BLU Ltd | Information & communication | 2023 |
| Fays Traders Limited | Wholesale & retail | 2018 |
| Fcap GP Ltd | Financial services | 2019 |
| Fcap VC Management Ltd | Financial services | 2019 |
| FD Consultants Limited | Health & social care | 2019 |
| Fe-Media Ltd | Professional & scientific | 2022 |
| Feesa Ltd | Professional & scientific | 2001 |
| Feldt Creative Co Ltd | Information & communication | 2025 |
| Felix IT Ltd | Information & communication | 2020 |
| Ferlisi Properties Limited | Real estate | 2021 |
| Ferlisi Trading Limited | Wholesale & retail | 2016 |
| Fernandes HR Limited | Administrative & support | 2020 |
| Ferrodyne Ltd | Water & waste | 2023 |
| FHR Accounting Ltd | Professional & scientific | 2018 |
| Fibrodyne Limited | Professional & scientific | 2022 |
| Ficron Ltd | Construction | 2019 |
| Fieldwest Solutions Ltd | Information & communication | 2024 |
| Fightback Online Ltd | Information & communication | 2016 |
| Fike Data Limited | Information & communication | 2025 |
| Film Lite Limited | Information & communication | 2014 |
| Finance Studio UK Ltd | Administrative & support | 2017 |
| Fine Arts Investment and Property Limited | Real estate | 1981 |
| Finesse Financial Planning Ltd | Professional & scientific | 2017 |
| Finishing Touch (Southern) Limited | Administrative & support | 2008 |
| Finsbury CT RTM Company Limited | Households | 2024 |
| Fire Industry Resources & Equipment Limited | Professional & scientific | 1997 |
| Fire Pro-Stv Ltd | Construction | 2025 |
| First Beech Tree Park Maintenance Limited | Administrative & support | 1966 |
| Fish Tank (Surrey) Ltd | Other services | 2021 |
| Fit Activewear Limited | Wholesale & retail | 2023 |
| Fit the Mould Ltd | Arts & recreation | 2023 |
| Fit the Mould Productions CIC | Education | 2021 |
| Fitmodels Limited | Administrative & support | 2011 |
| Fitness Fullstop Ltd | Health & social care | 2019 |
| Fitt Phoenix Limited | Manufacturing | 2016 |
| FIVE1TWO.OE Limited | Professional & scientific | 2026 |
| Flag Partners Limited | Professional & scientific | 2011 |
| Flamingo Solutions Ltd | Information & communication | 2024 |
| Flannigan Freeholds Ltd | Real estate | 2025 |
| Flatdogs Consulting Ltd | Professional & scientific | 2011 |
| Fletta Ltd | Wholesale & retail | 2011 |
| Fleur Jewellery Ltd | Wholesale & retail | 2010 |
| Flexifoil International Limited | Wholesale & retail | 1992 |
| Flipcast DUO Ltd | Manufacturing | 2026 |
| Flying Dutchman Productions Ltd | Information & communication | 2019 |
| Foenix Limited | Manufacturing | 2023 |
| Ford Homes Group Ltd | Construction | 2026 |
| Forestry Management Services Ltd | Agriculture & fishing | 2025 |
| Fort FM FS Ltd | Administrative & support | 2025 |
| Fort FM Ltd | Administrative & support | 2019 |
| Forte Consult Ltd | Professional & scientific | 2020 |
| Fortress Fencing & on Site Works Ltd | Construction | 2026 |
| Fortunis Distribution Network 2 Limited | Financial services | 2025 |
| Fortunis Distribution Network Limited | Financial services | 2025 |
| Fortunis Film Finance Ltd | Public administration | 2025 |
| Fortunis Impact Investments GP Limited | Financial services | 2020 |
| Fortunis R&D Executive Services Limited | Financial services | 2020 |
| Fourier Squared Ltd | Information & communication | 2026 |
| Foyd Ltd | Construction | 2022 |
| FPK Development Ltd | Construction | 2026 |
| FPK Housing Consultancy Ltd | Professional & scientific | 2023 |
| Franklands Park Limited | Real estate | 2012 |
| Fraser & KIN Limited | Hospitality | 2025 |