| First Glass Auto Windscreens Limited | Wholesale & retail | 2017 |
| First Service Financial Limited | Financial services | 2008 |
| First Sleep Limited | Wholesale & retail | 2012 |
| Fisher Consult Ltd | Professional & scientific | 2014 |
| Fiskerton Developments Limited | Construction | 2014 |
| Fit Perfecto Limited | Manufacturing | 2025 |
| Fitara Fitness Ltd | Financial services | 2026 |
| FK Coaching Ltd | Professional & scientific | 2024 |
| Flagship Innovation Limited | Construction | 2020 |
| Flaming Genius Ltd | Hospitality | 2022 |
| Flat OUT Paintshop Ltd | Manufacturing | 2022 |
| Flavor Saver Ltd | Hospitality | 2026 |
| Fleetex Limited | Wholesale & retail | 2007 |
| Flico Ltd | Wholesale & retail | 2021 |
| Flint Futures Consultancy Ltd | Extraterritorial | 2025 |
| Flying 50 Limited | Arts & recreation | 2015 |
| Fobo Hub Ltd | Administrative & support | 2017 |
| Folubem Group Limited | Manufacturing | 2025 |
| Food Connections Limited | Wholesale & retail | 1992 |
| Force Courier Solutions Limited | Transport & logistics | 2026 |
| Ford & Sons Transport Limited | Transport & logistics | 2016 |
| Forest Way School | Education | 2012 |
| Forgebond Resin Ltd | Construction | 2026 |
| Formels Ltd | Financial services | 2022 |
| Forza Transport Ltd | Transport & logistics | 2014 |
| Foster Electrical Services Limited | Construction | 2003 |
| Foster Yeoman (Dulcote) Limited | Professional & scientific | 1923 |
| Foster Yeoman Jetties Limited | Professional & scientific | 1986 |
| Foster Yeoman Limited | Financial services | 1923 |
| Four Squared Properties Limited | Real estate | 2018 |
| FOX Sports Surfacing Limited | Construction | 2004 |
| Foxcote Mead Management Company Limited | Construction | 2000 |
| FPI Capital Partners Limited | Financial services | 2023 |
| FQF Holdings Limited | Professional & scientific | 2006 |
| Franchise Investments Durham Limited | Construction | 2013 |
| Franchise Investments Yorks & Lincs Ltd | Construction | 2017 |
| Francis(Springmeadows)Limited | Construction | 1967 |
| Frangible Safety Posts Group Ltd | Financial services | 2022 |
| Frangible Safety Posts Limited | Manufacturing | 2009 |
| Frederick Bowles Limited | Construction | 1959 |
| French Bliss Limited | Wholesale & retail | 2003 |
| French House Limited (the) | Extraterritorial | 1974 |
| Frenchay Developments Limited | Construction | 1964 |
| Fresh Hair (Leicester) Ltd | Other services | 2015 |
| Friends of Holly Hayes Wood | Agriculture & fishing | 2008 |
| FSM247 Ltd | Information & communication | 2025 |
| Fuel for Fit Ltd | Wholesale & retail | 2024 |
| Fulfilit Limited | Transport & logistics | 2015 |
| Fulham Wharf LLP | | 2012 |
| Fulham Wharf One Limited | Construction | 2016 |
| Fulham Wharf Two Limited | Construction | 2016 |
| Full Metal Roofing Ltd | Construction | 2007 |
| FUN Time Corporate Events Ltd | Hospitality | 2023 |
| Furlong Projects Ltd | Financial services | 2025 |
| Fusion Coalville Ltd | Hospitality | 2025 |
| Future (Awards and Qualifications) Limited | Administrative & support | 2005 |
| Future Breaks Ltd | Manufacturing | 2023 |
| Fuzzythings Ltd | Wholesale & retail | 2025 |
| G a Parker & Sons Limited | Wholesale & retail | 2008 |
| G Ghita Ltd | Transport & logistics | 2020 |
| G L D Training Ltd | Education | 2019 |
| G Longley Planning & Property Services Ltd | Professional & scientific | 2023 |
| G&G Ecology Consultants Ltd | Professional & scientific | 2025 |
| G&G Medical Ltd | Health & social care | 2017 |
| G&S Foods Limited | Wholesale & retail | 2018 |
| G. D. Thorner (Construction) Limited | Professional & scientific | 1968 |
| G. D. Thorner (Holdings) Limited | Professional & scientific | 1968 |
| G.Baj Transport Limited | Transport & logistics | 2013 |
| Gabsuppliesandservices Ltd | Wholesale & retail | 2021 |
| Gadsby & Howlett Homes Ltd | Real estate | 2025 |
| Gainzgrip Ltd | Wholesale & retail | 2025 |
| Gajara Catering Ltd | Hospitality | 2018 |
| GARAGE2ROOM Ltd | Construction | 2026 |
| Garden Bennett Landscaping Ltd | Administrative & support | 2025 |
| Garrett Car Company Ltd | Wholesale & retail | 2011 |
| Gary Dickenson Groundworks Ltd | Construction | 2013 |
| Gatling GUN Productions Limited | Information & communication | 2017 |
| Gavmay Development Services Ltd | Education | 2016 |
| Gavmay Properties Limited | Real estate | 2020 |
| GC Property & Investments Ltd | Real estate | 2016 |
| Gecko Group Ltd | Professional & scientific | 2020 |
| Gedikmedia Consultancy Limited | Information & communication | 2021 |
| Gee’S K9’S Ltd | Other services | 2021 |
| Gelsmoor Landscapes Limited | Construction | 2022 |
| Gemma Marie Limited | Other services | 2022 |
| Gemmix Limited | Manufacturing | 2001 |
| Gentel Studios Ltd | Manufacturing | 2025 |
| Geocycle UK Limited | Water & waste | 1988 |
| George Barclay Properties Limited | Construction | 2016 |
| German Car Clinic CV Ltd | Wholesale & retail | 2025 |
| GES Properties Ltd | Real estate | 2020 |
| Getacar Limited | Wholesale & retail | 2016 |
| Gidm Properties Ltd | Real estate | 2025 |
| Gift Family Ltd | Wholesale & retail | 2020 |
| Gilt Realty & Occupancy Ltd | Real estate | 2026 |
| Ginger’S Cleaning Services and Maintenance Ltd | Administrative & support | 2026 |
| GLC Distributions Ltd | Wholesale & retail | 2026 |
| Gleam Team Services Limited | Administrative & support | 2005 |
| Glebe VON Wood Ltd | Other services | 2018 |
| Glenfield Installations Ltd | Construction | 2011 |