| Forever 831 Limited | Wholesale & retail | 2025 |
| Forever Together Funeral Care Denmead Ltd | Other services | 2021 |
| Forevergold Limited | Wholesale & retail | 2024 |
| Forge Sports Ltd | Manufacturing | 2025 |
| Forge Welding Ltd | Wholesale & retail | 2018 |
| Forget ME NOT Home Care Services Southern Ltd | Health & social care | 2023 |
| Formaga Limited | Information & communication | 2022 |
| Formula Building Ltd | Construction | 2023 |
| Forsyth Enterprises Limited | Wholesale & retail | 2025 |
| Fortis Contractors Limited | Construction | 2010 |
| Fortis Storage Ltd | Transport & logistics | 2025 |
| Fortitude Estates Ltd | Financial services | 2020 |
| Fortress Recruit Ltd | Administrative & support | 2025 |
| Fortuna Aurum Limited | Wholesale & retail | 2024 |
| Forty Foot Property Limited | Real estate | 2025 |
| Forwardnotch Property Management Limited | Households | 1999 |
| Found and Form Ltd | Professional & scientific | 2018 |
| Foundry Management Company Limited | Households | 1996 |
| Four B2 Limited | Construction | 2009 |
| Four Marks Glass Limited | Construction | 2018 |
| Fowler-Stevens Support Services Limited | Administrative & support | 2018 |
| Fowlers Decorating & Refurbishment Ltd | Construction | 2024 |
| Foxy Financial Investment Partners LP | | 2024 |
| Fractal-Drive Limited | Information & communication | 2026 |
| Frag Pulse Limited | Information & communication | 2022 |
| Fragrantia Limited | Manufacturing | 2019 |
| Fraimd Limited | Professional & scientific | 2025 |
| Framar Developments Southern Ltd | Construction | 2019 |
| Framboise Limited | Real estate | 2025 |
| Framewise Ltd | Information & communication | 2023 |
| Francis Civil Engineering Ltd | Construction | 2023 |
| Francis Management Consultants Limited | Health & social care | 1996 |
| Francis Williams Lettings Group Limited | Households | 2020 |
| Francis Williams Property Group Limited | Real estate | 2015 |
| Frank Dymore Agencies Limited | Wholesale & retail | 2014 |
| Frans Consultancy Limited | Wholesale & retail | 2017 |
| Fraser Medical Enterprises Limited | Health & social care | 2019 |
| FRC Roofing & Property Maintenance Ltd | Construction | 2025 |
| Frea Properties Limited | Real estate | 2024 |
| Frederic Event Management Limited | Hospitality | 2022 |
| Freedom Declared Foundation | Professional & scientific | 2016 |
| Freedom UN Limited | Transport & logistics | 2023 |
| Freedom Wood Consultancy Ltd | Information & communication | 2019 |
| Freespirit Glamping Limited | Hospitality | 2021 |
| Freight Connection International Ltd | Transport & logistics | 2025 |
| Frenchmans Court Management Company Limited | Households | 1989 |
| Frendy Ltd | Financial services | 2025 |
| Frensham Invesments Ltd | Administrative & support | 2023 |
| Fresh Catering at Victory Limited | Hospitality | 2012 |
| Fresh Digit Ltd | Wholesale & retail | 2019 |
| Fresh Take Ltd | Professional & scientific | 2025 |
| Freshopen Limited | Construction | 1988 |
| Freshwater Garages Limited | Wholesale & retail | 2005 |
| Frogmore Holdings Limited | Professional & scientific | 2002 |
| Frolik & Co Ltd | Wholesale & retail | 2021 |
| From Carli With Love Ltd | Financial services | 2022 |
| Frontline Rail Ltd | Construction | 2016 |
| FS Animal Health LLP | | 2010 |
| Fuel Ignition Ltd | Manufacturing | 2011 |
| Full POT Property Investments Ltd | Real estate | 2024 |
| Fuller Properties Limited | Real estate | 2021 |
| Fullings Associates Ltd | Professional & scientific | 2014 |
| Funding Experts Limited | Financial services | 2022 |
| Funktifino Limited | Information & communication | 2025 |
| Funky Pumpkin Design Limited | Professional & scientific | 2007 |
| Funnell & Howard Holdings Limited | Financial services | 2015 |
| Fuqi Property Ltd | Real estate | 2025 |
| Furapy Ltd | Professional & scientific | 2018 |
| Furniture & Mirror Ltd | Wholesale & retail | 2013 |
| Fuseforward UK Limited | Information & communication | 2020 |
| Future GAS Ltd | Construction | 2019 |
| Future Power Networks Ltd | Construction | 2024 |
| Futureboard Consulting Limited | Administrative & support | 2007 |
| Futuretec Southern Ltd | Manufacturing | 2013 |
| FXI Consultancy Limited | Professional & scientific | 2012 |
| G & B Southern Limited | Real estate | 2022 |
| G & D Brickwork Contractors Ltd | Construction | 1997 |
| G & D Scaffolding Limited | Construction | 2016 |
| G & R Roofing Ltd | Construction | 2024 |
| G & S Fabrications Limited | Construction | 2009 |
| G & S Lettings Limited | Real estate | 2019 |
| G Allen Consultancy Limited | Health & social care | 2024 |
| G B H Builders Limited | Construction | 2017 |
| G H Roofing & Property Maintenance Limited | Construction | 2026 |
| G J Ventures Ltd | Wholesale & retail | 2024 |
| G M Bailey and Sons Ltd | Construction | 2019 |
| G M P Brickwork Limited | Construction | 2022 |
| G M P Validation Limited | Administrative & support | 1997 |
| G Modi & Sons Limited | Hospitality | 2023 |
| G P Contracting Limited | Construction | 2020 |
| G P H Services Limited | Construction | 2019 |
| G S Creations Limited | Professional & scientific | 2008 |
| G Stirling Holdings Limited | Financial services | 2013 |
| G Sync Electrical Ltd | Construction | 2025 |
| G W Southern Windows Ltd | Construction | 2025 |
| G White Construction Limited | Construction | 2003 |
| G&L Property Holdings Ltd | Real estate | 2025 |
| G&T Roofing & Building Specialists Ltd | Construction | 2018 |
| G. Walker Consultancy Ltd | Information & communication | 2014 |
| G.M.B Investment Holdings | Financial services | 2023 |