| FSD Infrastructure Ltd | Construction | 2023 |
| FSN Doors Limited | Wholesale & retail | 2010 |
| FT North America Limited | Professional & scientific | 2004 |
| Ftel Pension Trustee Limited | Extraterritorial | 2015 |
| FTM Property Ltd | Construction | 2022 |
| Fuel & Form Ltd | Other services | 2026 |
| Fujitsu (FTS) Limited | Professional & scientific | 1999 |
| Fujitsu (FTS) Pension Trustees Limited | Extraterritorial | 2020 |
| Fujitsu Comparable Pension Trust Limited | Extraterritorial | 1995 |
| Fujitsu Emea PLC | Financial services | 1988 |
| Fujitsu Emeia Shared Services Limited | Financial services | 1997 |
| Fujitsu Retirement Management Services | Professional & scientific | 1984 |
| Fujitsu Retirement Services Limited | Professional & scientific | 1977 |
| Fujitsu Services (Engineering Services) Limited | Information & communication | 2012 |
| Fujitsu Services (Flexible Finance) Limited | Extraterritorial | 1992 |
| Fujitsu Services (Investments) Limited | Extraterritorial | 1993 |
| Fujitsu Services (Managed Services) Limited | Professional & scientific | 1999 |
| Fujitsu Services (Medical Plan Trustee) Limited | Extraterritorial | 1995 |
| Fujitsu Services Capital Limited | Extraterritorial | 2003 |
| Fujitsu Services Holdings PLC | Information & communication | 1915 |
| Fujitsu Services Limited | Information & communication | 1907 |
| Fujitsu Services Overseas Holdings Limited | Professional & scientific | 2003 |
| Fujitsu Systems (Europe) Limited | Wholesale & retail | 1991 |
| Fujitsu Telecommunications Europe Limited | Professional & scientific | 1990 |
| Fujitsu UK Pension Trust Limited | Extraterritorial | 2003 |
| FUN Cases Ltd | Wholesale & retail | 2021 |
| FUN Lighting Limited | Manufacturing | 2008 |
| Furniture Forum Limited | Wholesale & retail | 2019 |
| Future Facilities Limited | Information & communication | 2002 |
| Future Smith's Consulting Ltd | Administrative & support | 2023 |
| G a Clarke Associates LLP | | 2012 |
| G Mikov Ltd | Other services | 2022 |
| G&E Enterprise Ltd | Wholesale & retail | 2020 |
| G.R Response Healthcare Ltd | Health & social care | 2001 |
| G.Y.H Ltd | Information & communication | 2011 |
| G2P Property Limited | Real estate | 2022 |
| GA Payne Limited | Health & social care | 2012 |
| GAA Distribution Ltd | Transport & logistics | 2023 |
| Gabojo UK Limited | Administrative & support | 2018 |
| Gabse Group Limited | Construction | 2021 |
| Gajpat Property Services Limited | Real estate | 2025 |
| Galbanum Enterprises Ltd | Wholesale & retail | 2025 |
| Gamechanger Solutions Ltd | Professional & scientific | 2016 |
| GAP Associates (UK) LLP | | 2007 |
| Garden Care Servi CES (UK) Limited | Other services | 2004 |
| Gardens of Eden 4U Ltd | Administrative & support | 2024 |
| Garrett Thermal Systems Limited | Professional & scientific | 1997 |
| Garrett Thermal Systems UK Limited | Financial services | 1997 |
| Gary Short Limited | Administrative & support | 2011 |
| GAS Pro Plumbing and Heating Ltd | Construction | 2018 |
| Gasmarkten Ltd | Information & communication | 2019 |
| Gavel UK Bidco Limited | Financial services | 2021 |
| GB Kickz Ltd | Wholesale & retail | 2025 |
| GBI Plumbing and Heating Ltd | Construction | 2026 |
| GBI Services Limited | Transport & logistics | 2017 |
| Gbormittah Lettings Ltd | Households | 2022 |
| GC Equine Limited | Agriculture & fishing | 2020 |
| Gcfa Ltd | Financial services | 2009 |
| GD Retail Services Limited | Professional & scientific | 2007 |
| GD Windows & Doors Ltd | Construction | 2025 |
| GDC Contracting Ltd | Administrative & support | 2025 |
| Gearspace.Com Ltd | Information & communication | 2011 |
| Gedney Limited | Wholesale & retail | 2015 |
| Geen Wholesalers Limited | Wholesale & retail | 2025 |
| Gellelaa IT Consulting Ltd | Information & communication | 2013 |
| Gellelaa Ventures Ltd | Real estate | 2020 |
| Gemato Limited | Administrative & support | 2009 |
| Gems Reward Management Services Ltd | Information & communication | 2023 |
| Generational Property Developments Ltd | Real estate | 2025 |
| Genesis Associates Limited | Professional & scientific | 1995 |
| Genetix Risk Management Ltd | Administrative & support | 2017 |
| Genius Kitchens LLP | | 2014 |
| Genius Trans Ltd | Transport & logistics | 2021 |
| GEO Trans 2017 Limited | Transport & logistics | 2017 |
| Geodan Investments Limited | Wholesale & retail | 2017 |
| George Belle Properties Limited | Real estate | 2021 |
| GET Fairways Ltd | Information & communication | 2026 |
| GET Looped Phone Ltd | Manufacturing | 2025 |
| GET Software Ltd | Information & communication | 2015 |
| GET Travelish Ltd | Administrative & support | 2025 |
| GETSHOP360 Limited | Wholesale & retail | 2024 |
| Gezair Marketing Ltd | Extraterritorial | 2025 |
| GFR Tech Ltd | Information & communication | 2015 |
| GG Highway Consultancy Limited | Professional & scientific | 2019 |
| GH Film Services Ltd | Administrative & support | 2012 |
| GH Wines Ltd | Wholesale & retail | 2020 |
| Gheorghie Zidu Limited | Construction | 2017 |
| Ghpc Group Limited | Professional & scientific | 2007 |
| Giata Paidea Ltd | Professional & scientific | 2020 |
| Gibbs Waste Limited | Water & waste | 2012 |
| GIC Construction Ltd | Construction | 2015 |
| Gift Guys Ltd | Wholesale & retail | 2024 |
| Gifted 10 Ltd | Arts & recreation | 2023 |
| Gintuition Ltd | Wholesale & retail | 2021 |
| Girl Friday-Berks Limited | Administrative & support | 2013 |
| Givefundraising Ltd | Wholesale & retail | 2016 |
| GJH MAN and Van Services Limited | Administrative & support | 2019 |
| GKG Ltd | Professional & scientific | 2014 |
| GKM Electrical Services Ltd | Construction | 2025 |
| GKS Locum Limited | Administrative & support | 2017 |