| Firhill Associates Limited | Information & communication | 2011 |
| First Gear Solutionz Limited | Information & communication | 2026 |
| Firth Communications Limited | Professional & scientific | 2006 |
| Five Oak Projects Ltd | Construction | 2011 |
| Five Zeroes Limited | Real estate | 2019 |
| Fizzykids Ltd | Professional & scientific | 2021 |
| Flame Sure Ltd | Construction | 2021 |
| Flay Mogg Limited | Professional & scientific | 2014 |
| Florians Developments Ltd | Real estate | 2012 |
| Focus Delivery Limited | Information & communication | 2015 |
| Foot-Tapping Records Limited | Information & communication | 2002 |
| Force Logic UK Ltd | Manufacturing | 2008 |
| Foredata Ltd | Information & communication | 2025 |
| Forge Cottages Courtyard Limited | Real estate | 2018 |
| Formus Ltd | Administrative & support | 2017 |
| Foster and Heanes Limited | Wholesale & retail | 2010 |
| Fosterhill Associates Limited | Professional & scientific | 2008 |
| Fosters Park Limited | Financial services | 2010 |
| Fouracre Fencing & Tree Work Limited | Agriculture & fishing | 2020 |
| Fourthasset Ltd | Information & communication | 2025 |
| FOX IT SM Limited | Information & communication | 2010 |
| Foxwood Lets Limited | Real estate | 2014 |
| FPF Warehousing Limited | Transport & logistics | 2016 |
| Fpjp Ltd | Information & communication | 2020 |
| Fplgraduates Ltd | Information & communication | 2024 |
| Frances Gardens Ltd | Information & communication | 2023 |
| Frankland & Brown Property Management Ltd | Real estate | 2023 |
| Freestyle Employee Ownership Trustee Limited | Professional & scientific | 2023 |
| Freestyle Holdings Limited | Information & communication | 2018 |
| Freestyle IT Limited | Information & communication | 2002 |
| Freestyle ITS Holdings Limited | Financial services | 2023 |
| Freestyle TS Limited | Information & communication | 2018 |
| Freightline Transfer Limited | Transport & logistics | 2021 |
| Fresh Thinking Hub Ltd | Professional & scientific | 2020 |
| Friend-James Investments Limited | Hospitality | 2024 |
| Frontier Carpentry & Building Ltd | Construction | 2016 |
| Frost & Willan Accounting Limited | Professional & scientific | 2012 |
| Frost Property Rentals Limited | Real estate | 2017 |
| FRU Limited | Manufacturing | 2002 |
| Full in Construction Ltd | Construction | 2025 |
| Fusion Architecture Ltd | Professional & scientific | 2003 |
| Future Enterprises Ltd | Information & communication | 2021 |
| Futurehealth Consulting Ltd | Professional & scientific | 2008 |
| Futurevision Solutions Ltd | Professional & scientific | 2026 |
| G H Transport Planning Ltd | Professional & scientific | 2019 |
| Gale & Co. Solutions Ltd | Information & communication | 2025 |
| Galleon Marine Boatyard LLP | | 2014 |
| Gallinula Ltd | Administrative & support | 2022 |
| Gamu.Com Limited | Health & social care | 2019 |
| Garden Suite Marquee Management Ltd | Real estate | 2022 |
| Gather to Grow Ltd | Education | 2023 |
| Gather to Grow Online Limited | Education | 2025 |
| Gaye Hacking Homes Ltd | Real estate | 2025 |
| GBO Technical Structures Ltd. | Professional & scientific | 1997 |
| GDS (Electrical) Management Limited | Construction | 2004 |
| GEE Properties Limited | Real estate | 2010 |
| Gemstone Interiors Ltd | Construction | 2019 |
| Genie Events Limited | Administrative & support | 2022 |
| Geoff C Harvey Ltd | Information & communication | 2017 |
| Gerald Well LLP | | 2025 |
| GET Good Gummies Ltd | Manufacturing | 2026 |
| Gifford Creative Services Ltd | Professional & scientific | 2007 |
| Gillco Ventures Limited | Real estate | 2021 |
| Gilroy Corporate Communications Limited | Information & communication | 1978 |
| Gilroy Employee Trustee Limited | Extraterritorial | 2024 |
| Gilroy Limited | Financial services | 2009 |
| Gimme Shelter Property Management Ltd | Real estate | 2023 |
| Ginny B Consulting Limited | Construction | 2016 |
| Giovanta Land Ltd | Real estate | 2026 |
| Girling Pipeworks Ltd | Construction | 2019 |
| GJM Builders Limited | Construction | 2014 |
| Glass Ceiling Ltd | Professional & scientific | 2023 |
| Glaston Hill Farms Limited | Agriculture & fishing | 1997 |
| Glazing Megastore Limited | Administrative & support | 2025 |
| Glen Haven (Odiham) M.C. Limited | Households | 2017 |
| Global Construction Consultants Limited | Professional & scientific | 2010 |
| Globlink Ltd | Health & social care | 2024 |
| Glow Through Aesthetics Ltd | Other services | 2025 |
| Go Equine Travel Limited | Transport & logistics | 2015 |
| Goddard & Co Financial Services Limited | Professional & scientific | 2021 |
| Goddardfry Wealth Management Limited | Financial services | 2010 |
| Goddards (Landscape Contractors) Limited | Administrative & support | 1983 |
| Goddards (Landscape Contracts) Limited | Extraterritorial | 2019 |
| Goddards Family Enterprises Limited | Financial services | 2025 |
| Goeasy Ltd. | Administrative & support | 1999 |
| Gold Scaffolding Ltd | Construction | 2016 |
| Goldsmith Lakes Limited | Construction | 1994 |
| Good Carma Limited | Wholesale & retail | 2010 |
| Goodsnet Ltd | Wholesale & retail | 2024 |
| Gordi Limited | Professional & scientific | 2020 |
| Goslings Garden and Fencing Services Limited | Administrative & support | 2006 |
| Gould Consulting Ltd | Professional & scientific | 2021 |
| GR8 Sounds Ltd | Information & communication | 2023 |
| Grace Green Limited | Real estate | 2023 |
| Graf Finance and Accountancy Ltd | Professional & scientific | 2020 |
| Grafite Limited | Professional & scientific | 1999 |
| Grant Pearson Brown Consulting Limited | Professional & scientific | 2001 |
| Graupner Vieira Ltd | Construction | 2025 |
| Grays Inc Ltd | Wholesale & retail | 2024 |
| Grazella Ltd | Wholesale & retail | 2026 |