| Executive Vacations Limited | Transport & logistics | 2009 |
| Exigo-It Ltd | Information & communication | 2012 |
| Exiris Advisory Ltd | Professional & scientific | 2025 |
| Exotic's @ Heart Ltd | Wholesale & retail | 2020 |
| Expaind (UK) Limited | Information & communication | 2024 |
| Experience Lighting Limited | Professional & scientific | 2009 |
| Experion Decorations Ltd | Construction | 2026 |
| Expert Painters Ltd | Construction | 2018 |
| Expert Property Consultancy Ltd | Real estate | 2025 |
| Exploriada Limited | Administrative & support | 2015 |
| Express Road Ltd | Transport & logistics | 2024 |
| Express Travel (UK) Limited | Transport & logistics | 2011 |
| Express Wholesale Group UK Ltd | Wholesale & retail | 2022 |
| Extension Designs Limited | Professional & scientific | 2005 |
| Extraction Action Ltd | Manufacturing | 2024 |
| Extrasense Limited | Professional & scientific | 2024 |
| Extreme Calligrams Ltd | Information & communication | 2026 |
| Extreme Clean Services Ltd | Administrative & support | 2021 |
| EYE Accounting & Financial Services Ltd | Professional & scientific | 2020 |
| EYE Lens Limited | Wholesale & retail | 2022 |
| EYE Services Ltd | Transport & logistics | 2021 |
| Eyres & Eyres Communications Ltd | Professional & scientific | 1997 |
| EYS Software Testing Limited | Information & communication | 2017 |
| EZ School of Motoring Limited | Education | 2019 |
| EZE Catering Ltd | Manufacturing | 2024 |
| Ezee Buy Limited | Wholesale & retail | 2025 |
| Ezup Direct Ltd | Wholesale & retail | 2022 |
| F S a International Limited | Real estate | 1975 |
| F8 IT Solutions Limited | Information & communication | 2010 |
| FA Tyres Services Limited | Wholesale & retail | 2017 |
| Faabric Interiors Ltd | Extraterritorial | 2025 |
| FAB Property Developers Ltd | Construction | 2025 |
| Factotum Services Ltd | Other services | 2023 |
| FAD3D Limited | Other services | 2024 |
| Fagan Building Services Ltd | Administrative & support | 2016 |
| FAH Properties Ltd | Real estate | 2020 |
| Fainis Build Ltd | Construction | 2026 |
| Fair Shake Ltd | Information & communication | 2015 |
| Fairfax Design and Build Limited | Construction | 2019 |
| Fairfax Housing Limited | Hospitality | 2019 |
| Fairfield Futures Trading LLP | | 2009 |
| Fairfirst Mortgages Limited | Financial services | 2024 |
| Fairford Innovations Limited | Real estate | 2021 |
| Fairies Limited | Administrative & support | 2010 |
| Fairlead Maritime Limited | Professional & scientific | 2010 |
| Fairlight Catering Ltd | Hospitality | 2023 |
| Falcon Field Management Limited | Households | 2015 |
| Famous 5 Takeaway Ltd | Hospitality | 2021 |
| Fancy Dress News Limited | Extraterritorial | 2013 |
| Farm to Fashion Ltd | Administrative & support | 2017 |
| Farmhouse Aylesbury Ltd | Hospitality | 2018 |
| Farmrite Limited | Extraterritorial | 1975 |
| Farrants Computing Ltd | Professional & scientific | 2015 |
| Farzon Ltd | Transport & logistics | 2017 |
| Fasa Vehicle Salvage Ltd | Wholesale & retail | 2026 |
| Fashionmuse Limited | Wholesale & retail | 2025 |
| Fast Express Limited | Professional & scientific | 2018 |
| Fast Track Field Services Ltd | Construction | 2026 |
| Fast Transport Services Limited | Transport & logistics | 2025 |
| FAT Buddha Thai Ltd. | Hospitality | 2018 |
| FAT Grandad Brewing Ltd | Manufacturing | 2022 |
| Fatnur Limited | Health & social care | 2020 |
| Favia Ltd | Transport & logistics | 2013 |
| Fawara Ltd | Financial services | 2025 |
| Fawcett & Hadley Interior Furnishings Ltd | Wholesale & retail | 2020 |
| Fazdon Ltd | Administrative & support | 2019 |
| FBM Consulting Ltd | Public administration | 2023 |
| FBS Consultants Limited | Professional & scientific | 2025 |
| Fcvdc Ltd | Professional & scientific | 2019 |
| FDI Aerospace Limited | Professional & scientific | 2013 |
| FDI Estate Ltd | Real estate | 2022 |
| Fearless Putting Limited | Education | 2011 |
| Feartech Ltd | Professional & scientific | 2022 |
| Feasty Foods Limited | Hospitality | 2026 |
| Feasty Grillz Limited | Hospitality | 2018 |
| Featherstone Optima Limited | Information & communication | 2026 |
| Felicita-Vmp Limited | Real estate | 2024 |
| Fembee Ventures Limited | Health & social care | 2014 |
| Fendee Films Ltd | Information & communication | 2022 |
| Fenland Pathology Services Ltd | Health & social care | 2026 |
| Ferret Technology Limited | Manufacturing | 2008 |
| Ferry Lane Solar Farm Limited | Construction | 2025 |
| Ferry Property Services Limited | Administrative & support | 2012 |
| Fervent Care Ltd | Administrative & support | 2024 |
| Fetched Ltd | Wholesale & retail | 2022 |
| Fever Academy Ltd | Education | 2025 |
| FF Enterprises Limited | Administrative & support | 2021 |
| FHB Services Ltd | Wholesale & retail | 2026 |
| Fidem Care Services Limited | Health & social care | 2023 |
| Fielder Enterprises Limited | Information & communication | 2025 |
| Fieldit Limited | Information & communication | 2011 |
| Fields of Dreams Farm Ltd | Public administration | 2021 |
| Fieldstead Insolvency Limited | Administrative & support | 2013 |
| Fiennes Parts Ltd | Wholesale & retail | 2023 |
| Figure Ground Architects Limited | Professional & scientific | 2014 |
| Filmgrip Limited | Information & communication | 2012 |
| Fina Systems Ltd. | Information & communication | 2005 |
| Final Stage Brokerage Limited | Administrative & support | 2016 |
| Finance Wave Transformation Ltd | Information & communication | 2019 |
| Financial Learning & Intelligence Ltd | Professional & scientific | 2025 |