| Fearless PR Limited | Professional & scientific | 2014 |
| Fernhill Place Residents Association Limited | Households | 2004 |
| Ferox Effects Limited | Administrative & support | 2005 |
| Ferry House Investments Limited | Administrative & support | 2018 |
| Feuerbach Designworks Limited | Manufacturing | 2019 |
| Fewtrellfades Ltd | Other services | 2025 |
| FFF Labs Ltd | Wholesale & retail | 2024 |
| Fidelity Group Limited | Information & communication | 2008 |
| Fifty Four Four Limited | Administrative & support | 2012 |
| FIFTY5 Contracts Limited | Construction | 2019 |
| Fika Legal Limited | Professional & scientific | 2026 |
| Find Your Paws Ltd | Information & communication | 2022 |
| Finding Time Limited | Wholesale & retail | 2018 |
| Firefly Merchandise Limited | Wholesale & retail | 2013 |
| Firfield Management Company Limited | Households | 2008 |
| First AID Matters Ltd | Education | 2012 |
| First Class Trade Limited | Wholesale & retail | 2022 |
| First Friday Holdings Limited | Financial services | 2025 |
| First Friday Limited | Administrative & support | 2001 |
| First Light Entertainment Limited | Information & communication | 2018 |
| Fish Innovation Group Ltd | Financial services | 2026 |
| Fish Innovation IP Ltd | Professional & scientific | 2026 |
| Fish Innovation Ltd | Professional & scientific | 2011 |
| Fixsen Construction Ltd | Construction | 2023 |
| FJ Castrum Limited | Hospitality | 2018 |
| FJ Portus Limited | Hospitality | 2014 |
| FJL Consulting Limited | Professional & scientific | 2007 |
| Flare Solutions Limited | Information & communication | 1998 |
| Flawless Business Systems Design Limited | Real estate | 1983 |
| FLC 2008 Limited | Wholesale & retail | 2008 |
| Fleetwood Technology Ltd | Information & communication | 2016 |
| Fleggmatic Approach Productions Limited | Information & communication | 2014 |
| Fletcher Hobbs Ltd | Professional & scientific | 2015 |
| Fleur D'Ecosse Film Productions Limited | Information & communication | 2013 |
| Flippin Films Limited | Information & communication | 2019 |
| Float House Limited | Extraterritorial | 2004 |
| Florey Chain House Management Company Limited | Hospitality | 2012 |
| Flower POT Inn Ltd | Hospitality | 2022 |
| Flowit Ltd | Information & communication | 2021 |
| Fluid Water Group Limited | Other services | 2017 |
| Flying Scotsman Enterprises Ltd | Arts & recreation | 2004 |
| Flyte Bar Limited | Hospitality | 2025 |
| FML Consulting Ltd | Professional & scientific | 2026 |
| Food Service Associates (Henley) Limited | Professional & scientific | 1989 |
| Footprints Tours Limited | Administrative & support | 2010 |
| Forcada Ltd | Extraterritorial | 2013 |
| Force Multiplier Ltd | Professional & scientific | 2025 |
| Forder & Forder Limited | Information & communication | 2012 |
| Forematic Ltd | Manufacturing | 2017 |
| Forfeit Limited | Information & communication | 2025 |
| Fort-Consult Ltd | Information & communication | 2019 |
| Fortis Escapes Ltd | Arts & recreation | 2023 |
| Fortuna Estates (Northend) Limited | Real estate | 2019 |
| Four Strings Property Ltd | Real estate | 2024 |
| Fouroeight Strategy Limited | Professional & scientific | 2025 |
| FOX Howard Limited | Construction | 2021 |
| Foxtwo Limited | Professional & scientific | 2001 |
| FP Richards Ltd | Other services | 2019 |
| FPR Property Limited | Real estate | 2021 |
| Fram Management Company Limited | Real estate | 2007 |
| Frank & Terry Ltd | Construction | 2026 |
| Frankland Engineering Limited | Other services | 1990 |
| Fraser John Limited | Real estate | 1995 |
| Freyr Nominees Limited | Professional & scientific | 2026 |
| Friar Park Tree Services Limited | Agriculture & fishing | 2024 |
| Friday Night LLP | | 2022 |
| Fruit BAT Hospitality Ltd | Hospitality | 2019 |
| Fully L0@DED Ltd | Hospitality | 2025 |
| Functor Group Ltd | Financial services | 2023 |
| Functor Investments Ltd | Financial services | 2023 |
| Functor Limited | Education | 2016 |
| Fusion Food Limited | Other services | 1998 |
| Fussypussy Limited | Wholesale & retail | 2020 |
| Fysh Film Ltd | Information & communication | 2006 |
| G E Lamden Installations Ltd | Construction | 2022 |
| G&B Fruit & VEG Consultancy Ltd | Wholesale & retail | 2020 |
| G&S Estates (Oxfordshire) Ltd | Construction | 2020 |
| G.J.S. Properties Limited | Real estate | 1977 |
| G.S. Accurate Translations/Interpreting & Law Advice Ltd. | Professional & scientific | 2026 |
| Gail Hunter Coaching & HR Consultancy Ltd | Administrative & support | 2020 |
| Gajen Ltd | Real estate | 2020 |
| Gala TGE Company Limited | Manufacturing | 2020 |
| Game Ventures UK Ltd | Financial services | 2020 |
| Ganeden Limited | Real estate | 2023 |
| Garden Health Plans Ltd | Administrative & support | 2025 |
| Gardiner Place Residential Management Limited | Households | 2020 |
| Gassworks Ltd | Information & communication | 2025 |
| Gate Cottage Management Company Limited(The) | Households | 1982 |
| Gateway Travel Limited | Hospitality | 2021 |
| GB Consultancy (UK) Limited | Administrative & support | 2005 |
| GB92 Ltd. | Financial services | 2025 |
| GC Facial Aesthetics Limited | Other services | 2024 |
| Gcsl Properties Limited | Real estate | 2021 |
| Gcsl Transport Limited | Transport & logistics | 2023 |
| Gearbox Holdings Limited | Households | 2012 |
| Generate Partners Ltd | Professional & scientific | 2024 |
| Generation Media Enterprises Limited | Professional & scientific | 2020 |
| Generation Media Exchange Limited | Extraterritorial | 2013 |
| Generation Media Limited | Professional & scientific | 2001 |
| Gentworks Limited | Manufacturing | 2001 |