| Ford Construction (Cheltenham) Limited | Construction | 2019 |
| Ford Farm (Woodbury) Limited | Households | 2012 |
| Ford Gilpin Riley Limited | Professional & scientific | 2002 |
| Ford Property Developments (SW) Limited | Construction | 2004 |
| Forde Surveying Limited | Professional & scientific | 2020 |
| Fore Street Enterprise Limited | Hospitality | 2023 |
| Foreland Holdings (SW) Ltd | Real estate | 2026 |
| Foreman Freelancing Ltd | Information & communication | 2024 |
| Foresight Financial Planning Limited | Financial services | 2000 |
| Foresight Wealth Management Ltd | Extraterritorial | 2019 |
| Forest & Trees Limited | Information & communication | 2017 |
| Forest Cycle Hire Limited | Administrative & support | 2007 |
| Forge Academy Ltd | Education | 2024 |
| Forge CSE Ltd | Professional & scientific | 2023 |
| Forge Healing Ltd | Health & social care | 2024 |
| Forge Medical Services Limited | Health & social care | 2019 |
| Forged Transport Ltd | Transport & logistics | 2026 |
| Forgisto Investments Limited | Other services | 2019 |
| Form Rifle Stocks Limited | Manufacturing | 2015 |
| Formentor Investments Limited | Administrative & support | 2021 |
| Formidable Homes Ltd | Real estate | 2025 |
| Forrow Property Limited | Real estate | 2024 |
| Fort Talent Ltd | Administrative & support | 2026 |
| Fortbury Homes Limited | Construction | 2005 |
| Fortescue Farming Limited | Agriculture & fishing | 2017 |
| Forthglade Foods Holdings Limited | Professional & scientific | 2015 |
| Forthglade Foods Limited | Manufacturing | 2011 |
| Forthglade Pet Food Bidco Limited | Professional & scientific | 2020 |
| Forthglade Pet Food Holdco Limited | Professional & scientific | 2020 |
| Forthglade Pet Food Midco Limited | Professional & scientific | 2020 |
| Forthglade Pet Food Topco Limited | Professional & scientific | 2020 |
| Fortis Gems Ltd | Wholesale & retail | 2025 |
| Fortitude Physio & Fitness Ltd | Other services | 2023 |
| Fortune Favours Entertainment Ltd | Hospitality | 2024 |
| Fortune Plus Plus Limited | Wholesale & retail | 2022 |
| Fortune Square Ltd | Wholesale & retail | 2024 |
| Fortunes Care Limited | Health & social care | 2024 |
| Forty Eight Financials Ltd | Professional & scientific | 2019 |
| Forty Five Pilates Ltd | Arts & recreation | 2025 |
| Forty Four Barbershop Limited | Other services | 2025 |
| Forty Four Ltd | Hospitality | 2024 |
| Fosters Carpentry Contractors Ltd | Manufacturing | 2021 |
| Fosters Developments Ltd | Real estate | 2022 |
| Fountain Medical Ltd | Wholesale & retail | 2024 |
| Four Burrows Solar Park Limited | Energy | 2012 |
| Four Paws Daycare Limited | Other services | 2021 |
| Four Pillar Properties Ltd | Real estate | 2022 |
| Four Seasons Community Care Limited | Health & social care | 2010 |
| Four Seasons Flats Ltd | Construction | 2017 |
| Four Seasons Installs Ltd. | Construction | 2019 |
| Four Seasons Signature Homes Ltd | Construction | 2023 |
| Four Tunes Park Hill Ltd | Real estate | 2024 |
| Four-Ex International Ltd | Wholesale & retail | 2020 |
| Four-Ex Ltd | Real estate | 2019 |
| Fouracre (South West) Limited | Real estate | 2020 |
| Fourcows Limited | Professional & scientific | 2018 |
| Fourpoint Business Consultancy Ltd | Professional & scientific | 2025 |
| Fowey Enterprises Ltd | Hospitality | 2025 |
| Fowey Valley Cider LLP | | 2012 |
| Fowler Financial Planning Limited | Financial services | 2018 |
| FOX Parking Ltd | Transport & logistics | 2022 |
| FOX Valley Holdings Limited | Financial services | 2019 |
| Foxer Design Ltd | Professional & scientific | 2026 |
| Foxfords Limited | Construction | 2001 |
| Foxhill Consulting Services Ltd | Professional & scientific | 2024 |
| Foxlands Consultancy Limited | Professional & scientific | 2019 |
| Foxpoint Properties Ltd | Real estate | 2022 |
| Foxworthy Limited | Extraterritorial | 2009 |
| FOY Cafes Limited | Hospitality | 2017 |
| FPL Construction Management Ltd | Construction | 2016 |
| FPL Team Ltd | Information & communication | 2022 |
| Fractal A/V Solutions Ltd | Arts & recreation | 2025 |
| Fractional General Counsel Limited | Professional & scientific | 2026 |
| Fractional JET Europe Limited | Transport & logistics | 2008 |
| Fraenkel Wright Limited | Professional & scientific | 2011 |
| Fragosmic Ltd | Professional & scientific | 2003 |
| Fragrant Earth Organics Limited | Manufacturing | 2004 |
| Frame Participation Ltd | Real estate | 2007 |
| Frame Warehouse UK Limited | Manufacturing | 2003 |
| Framtiden Wealth Ltd | Professional & scientific | 2020 |
| Francesco Ferrari Consulting Ltd | Information & communication | 2017 |
| Francis Court Management Co. Limited | Households | 1974 |
| Francis Farms Limited | Agriculture & fishing | 2019 |
| Francis Louis (Developments) Limited | Construction | 2017 |
| Francis Louis (Exeter) Ltd | Real estate | 2018 |
| Francis Louis Cleaning Limited | Administrative & support | 2025 |
| Francis Louis Maintenance Limited | Real estate | 2025 |
| Frank & Koda Ltd | Manufacturing | 2026 |
| Frank Tucker (Commercials) Limited | Wholesale & retail | 1973 |
| Frankies Taxis Exeter Ltd | Transport & logistics | 2024 |
| Frankies Taxis Newton Abbot Ltd | Transport & logistics | 2022 |
| Frankies Taxis Tiverton Ltd | Transport & logistics | 2022 |
| Frankincense Retreats Limited | Extraterritorial | 2019 |
| Franklin Lets Limited | Hospitality | 2024 |
| Franklin Solutions Limited | Construction | 2016 |
| Franksy Seeing YOU Here Ltd | Other services | 2024 |
| Fransept Limited | Professional & scientific | 1997 |
| Fraser and Wheeler (Dawlish) Limited | Real estate | 2013 |
| Fraser and Wheeler (Exeter) Limited | Real estate | 2015 |
| Fraser and Wheeler Limited | Financial services | 2010 |