| Frogmill Investments Limited | Households | 2021 |
| Frogmill Management Company Limited | Real estate | 1988 |
| Front END Data Ltd | Information & communication | 2014 |
| Front Runner Express Limited | Extraterritorial | 2008 |
| Front Runner Logistics Limited | Transport & logistics | 2000 |
| Frostic Limited | Wholesale & retail | 2019 |
| Frozen Armadillo Ltd | Information & communication | 2015 |
| FRS Management Limited | Households | 2021 |
| Frucom Foods Limited | Wholesale & retail | 2008 |
| Fruitbat Company | Professional & scientific | 2002 |
| Fruitima Ltd | Hospitality | 2023 |
| Fruits of Burnham Village T/A Mr.Boba Tea Burnham Ltd | Wholesale & retail | 2024 |
| Fryermiles Recruitment Limited | Administrative & support | 2016 |
| FTS Mobile Tyres and Recovery Ltd | Wholesale & retail | 2020 |
| FU JAU Academy LLP | | 2018 |
| Fuji Accounting Office LLP | | 2018 |
| Fulger MAG Ltd | Transport & logistics | 2024 |
| Full Circle Fitness Marlow Ltd | Arts & recreation | 2025 |
| Full Circle Fitness Wargrave Ltd | Arts & recreation | 2025 |
| FUN in ELK City Ltd | Arts & recreation | 2018 |
| Fundamental Energy Ltd | Professional & scientific | 2010 |
| Fundays Commerce Ltd | Extraterritorial | 2023 |
| Funeral Solution Expert Limited | Professional & scientific | 2021 |
| Funky Doors.Com Limited | Construction | 2016 |
| Funtech HQ LLP | | 2016 |
| Funtech Limited | Information & communication | 2016 |
| Funtyper Ltd | Information & communication | 2008 |
| Funwood Epic Limited | Professional & scientific | 2025 |
| Furlend Limited | Wholesale & retail | 1980 |
| Furlong Road Developments Limited | Real estate | 2014 |
| Furniture Line Ltd | Wholesale & retail | 2025 |
| Furones Ltd | Information & communication | 2016 |
| Furrow Court Ltd | Households | 2001 |
| Furrow Way 1960 Limited | Extraterritorial | 2014 |
| Furrows Mini Mart Ltd | Other services | 2025 |
| Furze Platt Senior School | Education | 2011 |
| Future Collective 4 Limited | Financial services | 2026 |
| Future Enterprises (Maidenhead) Limited | Real estate | 2000 |
| Future Fusion Care Ltd | Health & social care | 2024 |
| Future Gardens Landscaping Limited | Administrative & support | 2020 |
| Future NRG Limited | Construction | 2008 |
| Future Software Limited | Information & communication | 1997 |
| Future Stepup Limited | Professional & scientific | 2018 |
| Future Taekwondo Limited | Arts & recreation | 2004 |
| Future VC Limited | Other services | 2021 |
| Future Vision Technologies Ltd | Information & communication | 2019 |
| Future Wharf Limited | Wholesale & retail | 2024 |
| Futures.Health Ltd | Health & social care | 2019 |
| FVF Trading Group Ltd | Professional & scientific | 2016 |
| FX Effects Limited | Financial services | 2017 |
| FX7 Solutions Ltd | Information & communication | 2012 |
| FY Autos Limited | Wholesale & retail | 2019 |
| FYD Jewelry Textile and Design Limited | Wholesale & retail | 2023 |
| G & G Inspired Limited | Health & social care | 2024 |
| G & L Design & Build Ltd | Construction | 2017 |
| G Bell Consulting Limited | Information & communication | 2015 |
| G Edwards Brickwork Ltd | Construction | 2016 |
| G L Jones Carpentry Ltd | Construction | 2025 |
| G P Searle Plumbing & Heating Services Ltd | Construction | 2005 |
| G W Motor Company Ltd | Wholesale & retail | 2019 |
| G&Eri Ltd | Other services | 2022 |
| G&J Haulage Ltd | Transport & logistics | 2025 |
| G&M Engineering Limited | Professional & scientific | 2013 |
| G&T Electrical and Property Services Ltd | Energy | 2004 |
| G-Clean Solutions Limited | Administrative & support | 2026 |
| G-Commerce UK Services Limited | Information & communication | 2017 |
| G. & N. Brunsden Limited | Wholesale & retail | 1978 |
| G.W.Hamilton Ltd | Wholesale & retail | 2025 |
| G2 Corporate Limited | Professional & scientific | 2020 |
| G4 Prime Ltd | Construction | 2021 |
| Gadbridge Limited | Real estate | 2011 |
| Gadgets 4 Limited | Wholesale & retail | 2009 |
| Gadgets Nebula Ltd | Wholesale & retail | 2025 |
| GAF Construction Ltd | Construction | 2024 |
| Gaffa's Grill Ltd | Hospitality | 2024 |
| Gagnante Ventures Limited | Financial services | 2023 |
| Gala Leisure UK Limited | Administrative & support | 2008 |
| Galaair Limited | Administrative & support | 2021 |
| Galaby Construction Ltd | Extraterritorial | 2024 |
| Galaxy Professionals Ltd | Health & social care | 2018 |
| Gallahaye Limited | Construction | 2015 |
| Galloways Limited | Administrative & support | 1980 |
| Gallus Solutions Ltd | Agriculture & fishing | 2013 |
| Galvanised Limited | Professional & scientific | 2019 |
| Galvinised Solutions Ltd | Administrative & support | 2025 |
| Gama Consultancy Services Limited | Wholesale & retail | 2024 |
| Game Masters Guild Ltd | Hospitality | 2025 |
| Ganea Events Limited | Administrative & support | 2007 |
| Gano Limited | Manufacturing | 2025 |
| GAP Consultancies Ltd | Professional & scientific | 2022 |
| GAP in the Matrix Limited | Professional & scientific | 2019 |
| Gaps Care Ltd | Health & social care | 2015 |
| Garden Guru Maintenance Ltd | Administrative & support | 2024 |
| Gareth Egarr Builders Limited | Construction | 2010 |
| Gareth James Pools Limited | Professional & scientific | 2023 |
| Garon Estates Limited | Real estate | 2008 |
| Garvary II Wind Farm Limited | Energy | 2021 |
| Garvary Wind Farm Limited | Energy | 2015 |
| Gary Lawrence Contracting Limited | Manufacturing | 2021 |
| Gary Parsons Haulage Limited | Transport & logistics | 2010 |