| Flip the Switch Ltd | Construction | 2010 |
| Flit Movers Ltd | Transport & logistics | 2024 |
| Flo's Catering Limited | Hospitality | 2023 |
| Florence Care and Consultancy Service Ltd | Administrative & support | 2019 |
| Flow Cars Limited | Administrative & support | 2020 |
| Fltr Cafe Dubai Ltd | Hospitality | 2026 |
| Fltr Community Coffee Ltd | Hospitality | 2026 |
| Fltr Specialty Coffee Ltd | Hospitality | 2026 |
| FLX Media Ltd | Wholesale & retail | 2018 |
| Flytly Ltd | Hospitality | 2026 |
| FM Marvellous Limited | Wholesale & retail | 2025 |
| FM Properties London Ltd | Real estate | 2026 |
| FMH Consultancy London Ltd | Information & communication | 2018 |
| Fnmnewsltd Limited | Wholesale & retail | 2008 |
| Fone Trends UK Ltd | Wholesale & retail | 2018 |
| Food Mahal Ltd | Hospitality | 2025 |
| Foodsco Thames & Co Ltd | Wholesale & retail | 2024 |
| Footscray (Number 2) Limited | Construction | 1981 |
| Footscray Properties Limited | Real estate | 1993 |
| Foraidan Consulting Ltd | Information & communication | 2018 |
| Forbes Care Limited | Health & social care | 2014 |
| Force Hire Equipment UK Ltd | Administrative & support | 2023 |
| Forest Village Kindergarten Ltd | Health & social care | 2018 |
| Fortitude MAN and Van Ltd | Transport & logistics | 2023 |
| Fortune Accountants Ltd | Professional & scientific | 2023 |
| Fortune Business Consulting Limited | Professional & scientific | 2017 |
| Forty 1 Cars Ltd | Other services | 2015 |
| Forza BMS Ltd | Information & communication | 2006 |
| Fosters Auto Centres Limited | Wholesale & retail | 1995 |
| Fourmacy Ltd | Wholesale & retail | 2024 |
| FPP Construction Limited | Construction | 2014 |
| FQE | Education | 2013 |
| FQN Ltd | Financial services | 2024 |
| FR DTL Ltd | Health & social care | 2025 |
| Fraaz Traders Ltd | Wholesale & retail | 2021 |
| Franchise Food Group Ltd | Hospitality | 2023 |
| Franchise Food Partners Ltd | Hospitality | 2024 |
| Frank Film Productions Ltd | Information & communication | 2012 |
| Frankie Family Centre Ltd | Public administration | 2024 |
| Freddoo Arcade Ltd | Construction | 2019 |
| Freelancesolutionsuk Limited | Transport & logistics | 2025 |
| Freight Planners Ltd | Transport & logistics | 2026 |
| French Polishing and Finishing Limited | Other services | 2010 |
| Fresh Vegetables World Ltd | Wholesale & retail | 2024 |
| Fresh&Shiny Ltd | Administrative & support | 2017 |
| Fried Specialist Ltd | Hospitality | 2023 |
| Friends Property Portfolio Management Ltd | Real estate | 2014 |
| Fritzons Limited | Professional & scientific | 2016 |
| Frog Learning CIC | Agriculture & fishing | 2021 |
| Front Home Limited | Construction | 2026 |
| Frontier Motors Ltd | Wholesale & retail | 2026 |
| FS Properties Enterprise Ltd | Real estate | 2023 |
| Fueled Swimming Limited | Education | 2019 |
| Funlinx UK Ltd | Wholesale & retail | 2021 |
| Fursa Ltd | Real estate | 2025 |
| Fursanella Ltd | Transport & logistics | 2020 |
| Furzan Services Ltd | Health & social care | 2025 |
| Fuse Fibre Ltd | Information & communication | 2023 |
| Fusion Clearance Limited | Water & waste | 2013 |
| Future Accountants Ltd | Professional & scientific | 2021 |
| Future Lifestyle Creators Ltd | Real estate | 2020 |
| Futurewise Outsourcing Ltd | Administrative & support | 2015 |
| FZ Media Ltd | Information & communication | 2025 |
| G & B Medical Services Limited | Health & social care | 2011 |
| G & D Ceilings Limited | Construction | 2006 |
| G a T Bookkeeping Services Limited | Professional & scientific | 2013 |
| G Club Group UK Ltd | Financial services | 2024 |
| G D Decorators Limited | Construction | 2005 |
| G Dawson Electrical Limited | Construction | 2002 |
| G E Building Management Limited | Construction | 2018 |
| G G Communications Limited | Professional & scientific | 2014 |
| G L B Cars Limited | Transport & logistics | 2014 |
| G&J Bunce Consulting Ltd | Professional & scientific | 2019 |
| G&R Apparel Ltd | Wholesale & retail | 2024 |
| G-Tec Education UK Limited | Information & communication | 2026 |
| G.A.C London Trading Ltd | Transport & logistics | 2021 |
| G.N UK Traders Ltd | Transport & logistics | 2021 |
| Gadgetbit Ltd | Wholesale & retail | 2025 |
| Gadgetszone Ireland Limited | Other services | 2025 |
| Gafa Consulting Ltd | Professional & scientific | 2025 |
| Gafa Properties Ltd | Real estate | 2023 |
| Galaxy Cell Holding Ltd | Financial services | 2024 |
| Galaxy Cell Property Investment Ltd | Real estate | 2024 |
| Gallegos Morden Ltd | Hospitality | 2025 |
| Galya Pastry Ltd | Hospitality | 2026 |
| Gamescape UK Ltd | Information & communication | 2025 |
| Gantech Trading Limited | Health & social care | 2018 |
| Garant Plus (LND) Ltd | Construction | 2017 |
| Gardengroundspice Ltd | Hospitality | 2023 |
| Garratt Heating Ltd | Construction | 2017 |
| Garratte Holding Ltd | Financial services | 2023 |
| Garratte Property Investment Ltd | Real estate | 2023 |
| Garth Road Industrial Centre Management Company Limited | Real estate | 1986 |
| Garth Road Motcentre Limited | Administrative & support | 2009 |
| Gartwork Architecture Ltd | Professional & scientific | 2020 |
| Garzon Cyber Solutions Ltd | Information & communication | 2025 |
| Gaswaze Ltd | Construction | 2025 |
| Gate Eight Travel Ltd | Administrative & support | 2026 |
| Gavotti SGP Limited | Administrative & support | 2015 |
| Gazb Investments Limited | Real estate | 2014 |