| Frbo Ltd | Real estate | 2024 |
| Freedom Group International Limited | Information & communication | 2024 |
| Freedom of Expression Limited | Professional & scientific | 2008 |
| Freehold Company Holdings Limited | Financial services | 2025 |
| Freehold PMC Ltd | Households | 2021 |
| Freelance VIP Cabin Crew Ltd | Transport & logistics | 2023 |
| Fremahaya Limited | Information & communication | 2012 |
| French Crew Barbers Ltd | Other services | 2018 |
| French Crew Barbershop Ltd | Other services | 2019 |
| French Mcgowe Grant Limited | Professional & scientific | 2010 |
| Frenchgate Software Ltd | Information & communication | 2019 |
| Fresca Properties Limited | Real estate | 2004 |
| Fresh & Local Forecourts Limited | Wholesale & retail | 2020 |
| Fresh Fish Ltd | Hospitality | 2018 |
| Fresh Fish Putney Ltd | Hospitality | 2026 |
| Fresh Grill Foods Limited | Hospitality | 2017 |
| Fresher Finish Services Limited | Administrative & support | 2004 |
| Freshwater Associates Limited | Professional & scientific | 2011 |
| Frethia Projects Limited | Real estate | 2023 |
| Friendly Bites Limited | Manufacturing | 2024 |
| Friends of Koohi Goth Women’S Hospital | Professional & scientific | 2023 |
| Friend`S Property Portfolio Limited | Real estate | 2006 |
| Frigenti Place (Maidstone) Management Company Ltd | Households | 2015 |
| FRK Holdings Ltd | Real estate | 2024 |
| Front ROW Recruitment Ltd | Administrative & support | 2020 |
| Frydays Fish&Chips Sutton Ltd | Hospitality | 2023 |
| FSG Estate Holdings Ltd | Real estate | 2025 |
| Fssbuild Ltd | Construction | 2025 |
| FU Rong Limited | Other services | 2012 |
| Fulham Rigging Services Ltd | Professional & scientific | 2026 |
| Full House Entertainment Ltd | Professional & scientific | 2025 |
| Full House International Ltd | Professional & scientific | 2025 |
| Full House Live Ltd | Extraterritorial | 2025 |
| Full House Merchandise Ltd | Arts & recreation | 2025 |
| Full House Pantomime Ltd | Extraterritorial | 2025 |
| Full House Stage Ltd | Extraterritorial | 2025 |
| Full House Theatres Production Ltd | Extraterritorial | 2025 |
| Full Spectrum Automotive Ltd | Wholesale & retail | 2024 |
| Fullvue Ltd | Professional & scientific | 2025 |
| FUN Code Limited | Information & communication | 2017 |
| Fur-Tastic Dog Grooming Ltd | Other services | 2023 |
| Furbishland Ltd | Real estate | 2018 |
| Furever London Ltd | Wholesale & retail | 2024 |
| Further Afield Ltd | Information & communication | 2007 |
| Further Enterprises Limited | Administrative & support | 2011 |
| Fuse Hair Ltd | Other services | 2024 |
| Fusion Automotive Limited | Manufacturing | 2012 |
| Fusion Consultants Ltd | Extraterritorial | 2017 |
| Fusion Management Services Limited | Administrative & support | 2015 |
| Fusion Office Design (24) Ltd | Construction | 2024 |
| Fusion Rivers Investment Company Ltd | Financial services | 2025 |
| Futera EOT Limited | Administrative & support | 2024 |
| Futera Limited | Information & communication | 1988 |
| Fuvis Limited | Administrative & support | 2010 |
| G & G Event Specialists Ltd | Other services | 2012 |
| G & J Building & Construction Ltd | Construction | 2010 |
| G C Steel Limited | Construction | 2016 |
| G F Refurbishment Ltd | Construction | 2015 |
| G J Cars Ltd | Wholesale & retail | 2019 |
| G J Fahy Ltd | Administrative & support | 2026 |
| G M Scenic Design Ltd | Information & communication | 2015 |
| G Nazlamov Ltd | Construction | 2012 |
| G P Maintenance Ltd | Construction | 2023 |
| G Phillips Construction Ltd | Construction | 2019 |
| G&G Interiors Ltd | Manufacturing | 2007 |
| G&J Electrical Group Ltd | Construction | 2023 |
| G&Ng Ltd | Real estate | 2021 |
| G-Tech AV Ltd | Professional & scientific | 2022 |
| G.A.T.E Learning Solutions Ltd | Hospitality | 2012 |
| G.C. Properties Limited | Manufacturing | 2009 |
| G.M.G Motors Ltd | Wholesale & retail | 2008 |
| G.M.Z. Properties Limited | Real estate | 2024 |
| G1 Capital Ltd | Professional & scientific | 2025 |
| G4S Bullion Solutions (UK) Limited | Administrative & support | 2011 |
| G4S Cash Centres (UK) Limited | Administrative & support | 1980 |
| G4S Cash Solutions (UK) Limited | Administrative & support | 1939 |
| Gabriela 1013 Ltd | Construction | 2020 |
| Gace Ltd | Administrative & support | 2022 |
| Gagita Resto & Lounge Ltd | Wholesale & retail | 2025 |
| Gajanan Krupa Limited | Health & social care | 2022 |
| Galande Ltd | Wholesale & retail | 2022 |
| Galaxy Extend Limited | Construction | 2013 |
| Gallego's Piri Piri and Pizza Ltd | Hospitality | 2021 |
| Gallop Mildon Ltd | Professional & scientific | 2026 |
| Game Master App Ltd | Wholesale & retail | 2025 |
| Games Artist Limited | Education | 2023 |
| Gamton Retail Ltd | Wholesale & retail | 2020 |
| GAN Corporation Limited | Administrative & support | 2025 |
| Ganatra Locum Services Ltd | Health & social care | 2023 |
| Ganay Group Ltd | Real estate | 2020 |
| Gander Back SPV Ltd | Construction | 2018 |
| Gander Mart SPV Ltd | Construction | 2018 |
| Garden Grafters Eco Ltd | Administrative & support | 2022 |
| Gargi Enterprises Limited | Transport & logistics | 2025 |
| Garma Garam Ltd | Wholesale & retail | 2023 |
| Garratt Services (Tooting) Limited | Construction | 1978 |
| Garret Antiques Limited | Wholesale & retail | 2002 |
| Gary Twine Props Limited | Information & communication | 2012 |
| Gasabo Ltd | Information & communication | 2016 |
| Gasplumb and Heating Ltd | Construction | 2016 |