| Furris Co., Ltd | Wholesale & retail | 2021 |
| Fusion Axis Ltd | Administrative & support | 2024 |
| Fusion Electrical & Facilities Ltd | Administrative & support | 2025 |
| Fusion Pest Control Limited | Extraterritorial | 2023 |
| Fusionology Limited | Other services | 2024 |
| Futura FM Limited | Construction | 2025 |
| Future Avenue Limited | Wholesale & retail | 2015 |
| Future F G Limited | Administrative & support | 2021 |
| Future First Capital LLP | | 2020 |
| Future Form Construct Ltd | Construction | 2024 |
| Future Generation Services Ltd. | Manufacturing | 1989 |
| Future Play Ltd | Construction | 2021 |
| Futurecodersse Community Interest Company | Information & communication | 2017 |
| Fuyo Global Education Consulting Ltd | Education | 2025 |
| FW Enterprises Limited | Arts & recreation | 2003 |
| FWD Thinking CIC | Health & social care | 2026 |
| FXS Trading Limited | Other services | 2022 |
| Fzbah Media Ltd | Information & communication | 2018 |
| G & N Property Developments Limited | Construction | 2016 |
| G and C Designs LLP | | 2022 |
| G and J Butler Property Ltd | Real estate | 2017 |
| G K V Limited | Wholesale & retail | 2019 |
| G P Wholecare Co Ltd | Other services | 2014 |
| G S Riar Limited | Real estate | 2025 |
| G S Rigging Ltd | Administrative & support | 2023 |
| G&B Real Estate Ltd | Real estate | 2021 |
| G&H Supplier Limited | Other services | 2024 |
| G'S Food & Wine Convenience Store Limited | Wholesale & retail | 2026 |
| G. a. Property Works Limited | Construction | 2021 |
| G. Shrubb Tree Surgery Ltd | Administrative & support | 2020 |
| G.A.C. Recruitment Limited | Administrative & support | 2023 |
| G.C. Hurrell & Co Limited | Manufacturing | 1928 |
| G.C. Roofing Kent Ltd | Construction | 2013 |
| G.E.M. Building Consultancy Ltd | Professional & scientific | 2018 |
| G.Lordservices Ltd | Health & social care | 2022 |
| G.P.S Marine Holdings Limited | Professional & scientific | 2008 |
| G.P.S. Projects Limited | Construction | 2001 |
| G.S Contract Services Ltd | Water & waste | 2022 |
| G.S. Traders Ltd | Wholesale & retail | 2025 |
| G1 Fire and Rescue Limited | Public administration | 2019 |
| G20 Services Ltd | Construction | 2019 |
| GA Global Property Solutions Ltd | Real estate | 2023 |
| GAB Property Management Limited | Real estate | 2025 |
| GAB Services Limited | Real estate | 2023 |
| Gabby Williams Ltd | Wholesale & retail | 2025 |
| Gabriel & Haastrup Ltd | Administrative & support | 2017 |
| Gaffar Capital Ltd | Real estate | 2024 |
| Gaingap Property Management Limited | Extraterritorial | 1987 |
| GAJ Projects Ltd | Construction | 2024 |
| GAL Next Door Limited | Wholesale & retail | 2021 |
| Galahad Ltd | Extraterritorial | 2025 |
| Galatea Ltd | Professional & scientific | 2026 |
| Galatians 1 Limited | Professional & scientific | 2019 |
| Gallego’S Peri Peri Limited | Wholesale & retail | 2024 |
| Gallinaghbrownhospitality Ltd | Hospitality | 2024 |
| Gallop Consulting Ltd | Information & communication | 2016 |
| Gamble Access Solutions Ltd | Construction | 2015 |
| Gamblr Holdings Ltd | Real estate | 2025 |
| Gamma Block (Rochester) Management Limited | Administrative & support | 1989 |
| GAQ Services Ltd | Construction | 2017 |
| Garden Bidco Ltd | Financial services | 2025 |
| Garden Design Solutions Ltd | Administrative & support | 2017 |
| Garden Midco Ltd | Financial services | 2025 |
| Garden Topco Ltd | Financial services | 2025 |
| Gardner FRD Ltd | Construction | 2017 |
| Gardner FRD Manufacturing Limited | Extraterritorial | 2020 |
| Garment Tech (Services ) Ltd | Manufacturing | 2023 |
| GAS Tapps UK Limited | Construction | 2017 |
| Gastechnik Ltd | Construction | 2018 |
| GAT Services Limited | Extraterritorial | 2020 |
| Gate Control Gear Limited | Wholesale & retail | 2008 |
| Gatortradefx Ltd | Professional & scientific | 2020 |
| Gayatry Properties Ltd | Real estate | 2021 |
| GAZ Tech Solutions Ltd | Professional & scientific | 2023 |
| GB Nitankri Ltd | Construction | 2024 |
| GB Project Solutions Ltd | Construction | 2025 |
| Gbbu Limited | Arts & recreation | 2021 |
| Gbedu Group Holdings Ltd | Financial services | 2025 |
| Gbedu Photography Ltd | Professional & scientific | 2023 |
| Gbmb Limited | Health & social care | 2026 |
| GCS Compliance Ltd | Professional & scientific | 1997 |
| GDM Trading Limited | Wholesale & retail | 2001 |
| Geering's Holdings Limited | Professional & scientific | 2013 |
| GEK Services Limited | Construction | 2024 |
| Geku U.K. Ltd | Manufacturing | 1995 |
| Gema Taverns Limited | Hospitality | 2015 |
| Gemclean Cleaning Services Limited | Administrative & support | 2002 |
| Gemcorps Ltd | Wholesale & retail | 2023 |
| Gemma Henderson PMA Training Ltd | Education | 2020 |
| GEN 4 Holdings Limited | Financial services | 2023 |
| GEN Heritage Holdings Ltd | Financial services | 2023 |
| Generation 4 Construction Ltd | Construction | 2019 |
| Generation 4 Developments Ltd | Other services | 1974 |
| Generation Success | Administrative & support | 2015 |
| Genesis Electrical Contracts Ltd | Construction | 2026 |
| Genie Investments UK Ltd | Hospitality | 2024 |
| GEO MM Surveys Limited | Construction | 2013 |
| Geodec Limited | Construction | 2025 |
| Geoff Wiles Cycles | | 1993 |
| Geomar Cable Services Ltd | Construction | 2024 |