| FLE Clothing Limited | Wholesale & retail | 2020 |
| Fleet Mobile Service Ltd | Wholesale & retail | 2026 |
| Flinx Limited | Real estate | 2024 |
| Flipstreet Market Ltd | Wholesale & retail | 2026 |
| Flitau Limited | Construction | 2022 |
| FLO & FLO Dog Wash Grays Ltd | Other services | 2026 |
| FLO Scaffolding Ltd | Construction | 2026 |
| FLO16 Trans Limited | Transport & logistics | 2017 |
| Flob Logistics International Ltd | Transport & logistics | 2023 |
| Flodar Ltd | Transport & logistics | 2018 |
| Floral Scent Limited | Wholesale & retail | 2024 |
| Florality Ltd | Information & communication | 2026 |
| Florea Contractors Ltd | Construction | 2019 |
| Flores Carp Experience Ltd | Agriculture & fishing | 2026 |
| Flourish Blinks Limited | Wholesale & retail | 2026 |
| Flourishsparkles Hair & Beauty Lounge Ltd | Real estate | 2024 |
| Flow Heat Plumbing Ltd | Construction | 2024 |
| Flowtonomy Limited | Arts & recreation | 2025 |
| Flowtrail Technologies Ltd | Information & communication | 2026 |
| Flush-Line Holdings Ltd | Financial services | 2024 |
| FLY Autos Limited | Wholesale & retail | 2015 |
| FLY Tours and Travels Ltd | Administrative & support | 2025 |
| Fmmm Services Limited | Real estate | 2025 |
| FMN Florea Ltd | Transport & logistics | 2015 |
| Fnlouisa Trading Ltd | Wholesale & retail | 2024 |
| Foamaway Solutions Ltd | Construction | 2025 |
| Fobbing Village Pre-School Limited | Education | 2020 |
| FOL Catering Ltd | Hospitality | 2020 |
| Folamin Services Limited | Health & social care | 2019 |
| Folayomi Limited | Health & social care | 2020 |
| Food 4 International Ltd | Hospitality | 2026 |
| Foodpanda Limited | Wholesale & retail | 2025 |
| Foot Professional Podiatry Limited | Health & social care | 2025 |
| Footprints EKD Enterprise Ltd | Real estate | 2022 |
| Forbes Installations Ltd | Construction | 2024 |
| Force NOW Group Ltd | Administrative & support | 2026 |
| Forefront Tradez Ltd | Wholesale & retail | 2025 |
| Forest School for ALL Ltd | Education | 2016 |
| Foret GIN Ltd | Wholesale & retail | 2024 |
| Forever Facility Support Ltd | Health & social care | 2023 |
| Forever Walls Ltd | Construction | 2023 |
| Forget ME NOT Flowers Ltd | Professional & scientific | 2010 |
| Form Therapy Ltd | Health & social care | 2026 |
| Formtofinishbasketball Ltd | Education | 2026 |
| Formula Food Ltd | Hospitality | 2022 |
| Fortis Finance Ltd | Professional & scientific | 2010 |
| Fortise Ltd | Administrative & support | 2015 |
| Fosr Limited | Other services | 2017 |
| Fountain Healthcare Professional Services Limited | Health & social care | 2010 |
| Four Butterflies Limited | Administrative & support | 2022 |
| Four Cottons UK Limited | Wholesale & retail | 2025 |
| Four Seasons 247 Care Limited | Health & social care | 2026 |
| Four Square Foundations Ltd | Health & social care | 2024 |
| Fourmales Healthcare Services Ltd | Health & social care | 2017 |
| Foursib Investahomes Limited | Real estate | 2023 |
| Fourtier Group Limited | Construction | 2017 |
| FOX at Sea Ltd | Construction | 2024 |
| FOX Refrigeration Services Limited | Other services | 1979 |
| FOX Surveying Services Ltd | Professional & scientific | 2024 |
| Foxgrove Partners Limited | Financial services | 2021 |
| Foxlet Homes Ltd | Real estate | 2026 |
| FPV Parts Ltd | Wholesale & retail | 2025 |
| Fragles Ltd | Transport & logistics | 2021 |
| Francis RD Limited | Construction | 2024 |
| Francomb Flooring Ltd | Construction | 2022 |
| Franki Foundations UK Limited | Construction | 1994 |
| Frankison Ltd | Wholesale & retail | 2021 |
| Fraser’S Heating Ltd | Construction | 2018 |
| Fravannah Ltd | Health & social care | 2018 |
| Freedom 2 BE Ltd | Other services | 2011 |
| Freeinkers Ltd | Information & communication | 2025 |
| Freight Today Limited | Transport & logistics | 2015 |
| FRN Construction Ltd | Construction | 2025 |
| Frontpage Properties Limited | Real estate | 2026 |
| Frosty's Deals Ltd | Wholesale & retail | 2026 |
| FTJ Services Limited | Professional & scientific | 2010 |
| Ftta Consulting Ltd | Professional & scientific | 2013 |
| Fuku Fashion Hub Limited | Wholesale & retail | 2025 |
| Full Tilt Logistics Ltd | Transport & logistics | 2025 |
| Future Concrete Cutting Services Ltd | Construction | 2012 |
| Future Eagle Consultancy and Training Ltd | Professional & scientific | 2018 |
| Future Steps Homes Ltd | Hospitality | 2025 |
| Futuregrid Consulting Ltd | Professional & scientific | 2024 |
| Fynergy Services Limited | Financial services | 2013 |
| G Bull Holdings Ltd | Administrative & support | 2026 |
| G Class Auto Ltd | Manufacturing | 2014 |
| G D Supplies Limited | Wholesale & retail | 2017 |
| G F M (London) Limited | Transport & logistics | 2012 |
| G Master Traders Ltd | Manufacturing | 2020 |
| G Ready Roofing Ltd | Construction | 2025 |
| G Star Resources Ltd | Administrative & support | 2020 |
| G T Coatings (U.K) Limited | Wholesale & retail | 2016 |
| G V I Transport Limited | Transport & logistics | 2017 |
| G W Barnard Limited | Construction | 2015 |
| G Webb Carpentry & Joinery Ltd | Manufacturing | 2020 |
| G&B Builders Limited | Construction | 2026 |
| G&Ivona Limited | Wholesale & retail | 2021 |
| G&M 16 Ltd | Wholesale & retail | 2019 |
| G&R Trading Limited | Other services | 2020 |
| G&S Cleaning London Ltd | Administrative & support | 2024 |