| Florconcept Ltd. | Wholesale & retail | 2021 |
| Florence House Keeping Ltd | Households | 2017 |
| Florin.M Ltd | Agriculture & fishing | 2025 |
| Flortec Store Limited | Wholesale & retail | 2025 |
| Floruma Ltd | Manufacturing | 2025 |
| Flossophy Vending Machines Limited | Hospitality | 2023 |
| Flow Mechanical Services Limited | Construction | 2000 |
| Flux Ventures Limited | Wholesale & retail | 2024 |
| Fluxe Digital Limited | Extraterritorial | 2023 |
| Flying School Project Ltd | Professional & scientific | 2015 |
| Flythru Limited | Information & communication | 2014 |
| FM Business Support Services Ltd | Administrative & support | 2011 |
| FM Commerce UK Ltd | Wholesale & retail | 2026 |
| FM Wakefield Limited | Wholesale & retail | 2019 |
| Fmcg Recruitment Ltd | Professional & scientific | 2022 |
| FMK Investment Properties Ltd | Real estate | 2025 |
| Fmmpub Co Ltd | Hospitality | 2026 |
| Focus Construction Limited | Construction | 2015 |
| Focuss Mechanical Services Limited | Professional & scientific | 2015 |
| Fogo Grill Ltd | Hospitality | 2025 |
| Foilit Print Finishers Ltd | Manufacturing | 2012 |
| Folab Ltd | Wholesale & retail | 2026 |
| Folcrest Trading Limited | Real estate | 1999 |
| Follaine Ltd | Information & communication | 2017 |
| Follins Property Holdings Ltd | Real estate | 2019 |
| FOM Group Limited | Construction | 2026 |
| Foodie Capital Limited | Hospitality | 2024 |
| Foodmaster (NW) Ltd | Hospitality | 2022 |
| Foodpack Resource Limited | Wholesale & retail | 2024 |
| Foods Empire Limited | Wholesale & retail | 2025 |
| Foodsys Limited | Information & communication | 2014 |
| Foodways PVT Ltd | Hospitality | 2024 |
| Footballxl Ltd | Arts & recreation | 2024 |
| FOR Better Ltd | Health & social care | 2023 |
| FOR Q (UK) Limited | Extraterritorial | 2010 |
| FOR the Home Limited | Wholesale & retail | 2021 |
| Fordshaw Consulting Ltd | Administrative & support | 2024 |
| Forge Point Labs Ltd | Manufacturing | 2025 |
| Forged Spirits Company Limited | Hospitality | 2022 |
| Forged Spirits Ltd | Manufacturing | 2018 |
| Forgepoint IP Ltd | Information & communication | 2025 |
| Forma Property Construction Ltd | Construction | 2025 |
| Forma Property Ltd | Construction | 2023 |
| Formosa Bathrooms Ltd | Construction | 2019 |
| Formr Ltd | Administrative & support | 2025 |
| Forrest Civil Engineering Ltd | Construction | 2019 |
| Fortis Environmental Services Ltd | Professional & scientific | 2025 |
| Fortune Inn Takeaway Ltd | Hospitality | 2015 |
| Forty Three Consultants LP | | 2011 |
| Forty-Two High Street Limited | Hospitality | 2002 |
| Forward Together Counselling Ltd | Health & social care | 2024 |
| Forwardstep Property Management Limited | Households | 1990 |
| Forza Facilities Management Ltd | Administrative & support | 2021 |
| Fosters Catering (Manheim) Limited | Hospitality | 2023 |
| Fothergill's Trees Ltd | Agriculture & fishing | 2013 |
| Fouroot Ltd. | Wholesale & retail | 2021 |
| FOX & Hounds Newmillerdam Limited | Hospitality | 2024 |
| FOX Holdings Wakefield Ltd | Real estate | 2018 |
| FOX Operations Group Ltd | Other services | 2025 |
| Foxs Family Enterprise Ltd | Wholesale & retail | 2014 |
| Foxstone Developments Ltd | Real estate | 2020 |
| Foxstone Homes Ltd | Real estate | 2022 |
| Foxstone Lettings Ltd | Real estate | 2023 |
| Foxstone Property Ltd | Real estate | 2018 |
| Foxstone Real Estate Ltd | Real estate | 2023 |
| Framecraft Ltd | Wholesale & retail | 2026 |
| Framelite Ltd | Construction | 2024 |
| Framework Business Installations Limited | Construction | 2000 |
| France Property Services Ltd | Construction | 2009 |
| Frances-Higgins Projects Limited | Administrative & support | 2019 |
| Frank Marketing Agency Ltd | Professional & scientific | 2022 |
| Frankelplus Limited | Information & communication | 2019 |
| Frankfurt & Co Holdings Ltd | Wholesale & retail | 2019 |
| Freedom Accountancy Limited | Professional & scientific | 2011 |
| Freedom Houses Ltd | Real estate | 2024 |
| Freegen Energy Ltd | Manufacturing | 2014 |
| Freelancer Pro Ltd | Professional & scientific | 2024 |
| Freight Forward UK Limited | Transport & logistics | 2019 |
| Freodom Ltd | Wholesale & retail | 2023 |
| Fresh Choice Foods Ltd | Wholesale & retail | 2014 |
| Fresh Co Superstore Ltd | Wholesale & retail | 2021 |
| Friarshill Property Halifax Limited | Real estate | 2017 |
| Fried Chicken HUT Ltd | Hospitality | 2018 |
| Frobisher Meadows (Wakefield) Residents Management Company Limited | Households | 2025 |
| Frog Power Tools Limited | Wholesale & retail | 2005 |
| Frolyx Property Ltd | Real estate | 2016 |
| Frontline Estates Ltd. | Construction | 2004 |
| Frontside One Limited | Financial services | 2021 |
| Frsxf Kigf Ltd | Wholesale & retail | 2026 |
| Fryers Delight Ltd | Hospitality | 2023 |
| FSB Partnership Ltd | Households | 2004 |
| FSL Estate Agents Ltd | Real estate | 2006 |
| FSP (Old) Ltd | Professional & scientific | 2020 |
| FTF Inc Limited | Wholesale & retail | 2012 |
| FTF Services & Solutions Limited | Administrative & support | 2016 |
| FTH Estimations Ltd | Professional & scientific | 2025 |
| Fudji Limited | Manufacturing | 2023 |
| Fuel Express Limited | Wholesale & retail | 1997 |
| Full Stop Studios Ltd | Information & communication | 2023 |
| Full Throttle Media Ltd | Information & communication | 2015 |