| Evergood Travel Limited | Administrative & support | 2017 |
| Eversley Accountancy Services Ltd | Professional & scientific | 2012 |
| Eversley Legal Limited | Professional & scientific | 2018 |
| Eversley Trust & Succession Planners Ltd | Professional & scientific | 2017 |
| Every Day Plumbing Limited | Construction | 2017 |
| Everyone's Energy UK Limited | Construction | 2019 |
| Everyone’S Energy South Ltd | Manufacturing | 2023 |
| Excentrico Coffee Limited | Wholesale & retail | 2024 |
| Exchange My Car Limited | Information & communication | 2019 |
| Exide House Residential Management Limited | Real estate | 2008 |
| Exodia Cosmetics Ltd | Wholesale & retail | 2022 |
| Explorance Global Limited | Information & communication | 2014 |
| Exposure Solutions Limited | Professional & scientific | 2016 |
| Express Transportation Ltd | Transport & logistics | 2019 |
| Express Water Tanks Limited | Construction | 2011 |
| EYE Mind Heart Limited | Wholesale & retail | 2017 |
| Eyre & Spottiswoode Limited | Manufacturing | 2002 |
| Ezifix Solutions Limited | Construction | 2026 |
| F.S. Lordarch Investments Limited | Other services | 1963 |
| Fabel Grace Limited | Information & communication | 2015 |
| Facilitated Business Change & Development Ltd | Professional & scientific | 1997 |
| Fairbank Associates Limited | Health & social care | 2002 |
| Fairnett Investments Limited | Real estate | 2023 |
| Faithful Consulting Ltd | Administrative & support | 2006 |
| FAM Stoves Ltd | Wholesale & retail | 2023 |
| Famibass Limited | Financial services | 2025 |
| Fanbear Corp Ltd | Wholesale & retail | 2021 |
| Fanshawe Court Limited | Households | 2015 |
| Fanshawes (2025) Limited | Administrative & support | 2025 |
| Farm Tyre Services (SE) Ltd | Wholesale & retail | 2024 |
| Farm Tyre Services Ltd | Wholesale & retail | 2014 |
| Farmer Interiors Limited | Construction | 2008 |
| Farmhouse Motors Limited | Wholesale & retail | 2017 |
| Farthingale Lane (Waltham Abbey) Management Company Limited | Households | 1992 |
| Fashoff UK Limited | Wholesale & retail | 1997 |
| Fastbreak Ltd | Information & communication | 2024 |
| Fastclear UK Limited | Water & waste | 2014 |
| Fasten Ltd | Wholesale & retail | 2018 |
| Fausti Films Limited | Information & communication | 2018 |
| Fearey Holdings Limited | Professional & scientific | 2002 |
| Feedwell Animal Foods Limited | Manufacturing | 1975 |
| Feeneys Finest Limited | Manufacturing | 2024 |
| Fells Construction Ltd | Construction | 2026 |
| FEN Holdings Ltd | Financial services | 2018 |
| Ferbish Homes Limited | Construction | 2008 |
| Fetch Store Ltd | Wholesale & retail | 2023 |
| Fibonacci Finance Limited | Financial services | 2015 |
| Filehound Document Management Limited | Information & communication | 2012 |
| Film Accounts.Com Limited | Information & communication | 2004 |
| Filmmakers of London Limited | Information & communication | 2016 |
| Films NOT Dead Ltd. | Professional & scientific | 2014 |
| FIN Creative Studio Ltd | Wholesale & retail | 2020 |
| FIN Divers Limited | Education | 2010 |
| FIN Mile Logistics Limited | Information & communication | 2022 |
| Finaleyes Post Ltd | Professional & scientific | 2024 |
| Finalise Limited | Information & communication | 2003 |
| Financial Benchmarks Limited | Financial services | 2019 |
| Fine Confectionery Trading Ltd | Wholesale & retail | 2003 |
| Fine Crown Limited | Hospitality | 2018 |
| Finfair Capital Limited | Professional & scientific | 2026 |
| Finglow Argentina Limited | Professional & scientific | 1992 |
| Fingroup Global Ltd | Professional & scientific | 2026 |
| Finlead Ltd | Professional & scientific | 2021 |
| Finsource Ltd | Professional & scientific | 2015 |
| Finterims Global Ltd | Professional & scientific | 2023 |
| Fire React Ltd | Public administration | 2023 |
| Firefly Ventures Ltd | Professional & scientific | 2018 |
| First Advisor Limited | Extraterritorial | 2014 |
| First Line Recovery Limited | Administrative & support | 2018 |
| First Old Vicarage Management Company Limited | Households | 1977 |
| First Principles Dental Team Training UK Limited | Administrative & support | 2024 |
| First Sovereign Place Management Company (Limehouse) Limited | Households | 1998 |
| First Step Cosmetics Ltd. | Professional & scientific | 2014 |
| Fixatex Group Holdings Limited | Financial services | 2024 |
| Fixatex Limited | Administrative & support | 2000 |
| Fizzwizz Ltd | Wholesale & retail | 2025 |
| FJS Innovations Ltd | Administrative & support | 2026 |
| Flamsteads of Hertford Ltd | Other services | 2019 |
| Fleming Catering Ltd | Hospitality | 2019 |
| Flex Property Lead Generation Ltd | Administrative & support | 2019 |
| FLEX360 Ltd | Professional & scientific | 2018 |
| Florence Court (Hertford) Freehold RTM Company Limited | Households | 2016 |
| Flourish Care Services Ltd | Other services | 2017 |
| Fltb Limited | Professional & scientific | 2020 |
| Flyck Ltd | Information & communication | 2026 |
| Flying Dog LLP | | 2010 |
| Fmdc Employee Trustee Limited | Extraterritorial | 2023 |
| Fmdc Limited | Administrative & support | 2012 |
| Folly Island Management Company Limited | Households | 2007 |
| Folly Island Residents Limited | Households | 1999 |
| Folsam Ltd | Professional & scientific | 2023 |
| Food Extraordinaire Limited | Wholesale & retail | 2013 |
| Football's Future Ltd | Arts & recreation | 2013 |
| Footgolf Management Limited | Arts & recreation | 2022 |
| Forbes Nightingale Limited | Administrative & support | 2024 |
| Force Security Ltd | Administrative & support | 2015 |
| Fordfield Consultants Limited | Professional & scientific | 2013 |
| Fore Street Consortium Ltd | Professional & scientific | 2020 |
| Forest Run Ltd | Information & communication | 2011 |
| Forrest Flooring Ltd | Administrative & support | 2015 |