| Fairway (Maidenhead) Management Company Limited | Real estate | 2005 |
| Fairy Tails Limited | Other services | 2017 |
| Fallen Stock Services Limited | Agriculture & fishing | 2018 |
| Family Kitchen and Catering Limited | Hospitality | 2025 |
| Fammia Limited | Wholesale & retail | 2025 |
| Fanatical Commerce Ltd | Wholesale & retail | 2021 |
| Fanzh Associates Ltd | Professional & scientific | 2022 |
| Farley Construction Limited | Construction | 2011 |
| Farmhouse (Wokingham) Ltd | Hospitality | 2020 |
| Farringdon Court (Reading) Management Company Limited | Households | 1999 |
| Fashorama Limited | Wholesale & retail | 2022 |
| Fateh Enterprises Limited | Information & communication | 2017 |
| Fateh Estates Ltd | Real estate | 2021 |
| Faust Property Holdings Limited | Real estate | 2025 |
| Favourite Productions Ltd | Information & communication | 2023 |
| Fdreviews Global Ltd | Hospitality | 2022 |
| Feasa Limited | Professional & scientific | 2008 |
| Feather Accounting Services Ltd | Professional & scientific | 2021 |
| FEB Fish Bar Limited | Hospitality | 2020 |
| Felgate Group Ltd | Financial services | 2023 |
| Felianas Services Limited | Information & communication | 2013 |
| Fencing Products Limited | Manufacturing | 1970 |
| Ferguson Finance PLC | Financial services | 2018 |
| Ferguson Swiss Holdings Limited | Professional & scientific | 2019 |
| Fermx Limited | Professional & scientific | 2013 |
| Fernhill Travel Limited | Transport & logistics | 2003 |
| FES Water Treatment Limited | Water & waste | 2014 |
| FEU Corp LLP | | 2025 |
| Ffocws Planning Ltd | Professional & scientific | 2026 |
| Fhma Ltd | Wholesale & retail | 2023 |
| Fiber Sensing Specialists Ltd | Information & communication | 2025 |
| Fields (Reading) Limited | Construction | 2003 |
| Fiesta Event Solutions Limited | Administrative & support | 1992 |
| Fiesta Marquee Hire Ltd | Administrative & support | 2012 |
| Film Logistics and Maintenance Limited | Transport & logistics | 2015 |
| Filmster Network Limited | Information & communication | 2024 |
| Finalatix Technologies Limited | Information & communication | 2017 |
| Finance Insight for Growth Ltd | Professional & scientific | 2020 |
| Finch Barbers Ltd | Other services | 2025 |
| Finch Consultants Ltd | Professional & scientific | 2015 |
| Finch Nail Bar Ltd | Other services | 2026 |
| Finchampstead Baptist Church | Health & social care | 2009 |
| Finches Cafe Ltd | Hospitality | 2023 |
| Finchhurst Property Consultancy Ltd | Real estate | 2026 |
| Finchwood Financial Partners Limited | Professional & scientific | 2023 |
| Fine & Country Reading & Wokingham Ltd | Real estate | 2019 |
| Finecrafters Limited | Wholesale & retail | 2024 |
| Finteam One UK Ltd | Information & communication | 2024 |
| Finteq Ltd | Professional & scientific | 2025 |
| Fiona Lavender Ltd | Administrative & support | 2022 |
| Fiona Parry Boutique Ltd | Wholesale & retail | 2021 |
| Fire Feast Barrel Ltd | Hospitality | 2026 |
| Firesapien Technologies Ltd | Information & communication | 2013 |
| Firetec Systems Limited | Manufacturing | 2013 |
| First Class Home Improvement Services Limited | Administrative & support | 2016 |
| First Mover Advantage Limited | Information & communication | 2024 |
| First Warren Residents Association Limited(The) | Real estate | 1986 |
| FIS3 Bidco Limited | Financial services | 2022 |
| FIS3 Midco 1 Limited | Financial services | 2022 |
| FIS3 Midco 2 Limited | Financial services | 2022 |
| FIS3 Topco Limited | Financial services | 2022 |
| Fit for Sport Limited | Extraterritorial | 1998 |
| FIX My DPF Ltd | Wholesale & retail | 2025 |
| Fixed Asset Business Services Ltd | Administrative & support | 2025 |
| Fixed Asset Disposal Ltd | Other services | 2017 |
| Fixed Asset Holdings Limited | Financial services | 2023 |
| Fixmy Ltd | Manufacturing | 2022 |
| FL Aesthetics Ltd | Other services | 2022 |
| FLA Services Ltd | Professional & scientific | 2021 |
| Flaherty Properties Limited | Construction | 1987 |
| Flair Homehelp LLP | | 2019 |
| FLB Accountants LLP | | 2008 |
| FLB Audit LLP | | 2022 |
| FLB Company Secretarial Services Ltd | Administrative & support | 2019 |
| FLB Limited | Financial services | 2024 |
| Fleur DE LIS Florist Ltd | Wholesale & retail | 2019 |
| Flexbay Properties Limited | Real estate | 2009 |
| Flexible Care Solutions Ltd | Health & social care | 2014 |
| Flexispirit Ltd | Hospitality | 2022 |
| Flexnflow Studio Ltd | Arts & recreation | 2025 |
| Flingbrook Ltd | Professional & scientific | 2017 |
| Flint & Foundry Ltd | Information & communication | 2026 |
| Flixmedia Limited | Information & communication | 2004 |
| Flo-Pro Southern Limited | Construction | 2020 |
| Flower Corner Wokingham Ltd | Wholesale & retail | 2019 |
| Flowerbud Ltd | Extraterritorial | 2007 |
| Flowers in Oxford Limited | Wholesale & retail | 2024 |
| Fluid Creative UK Limited | Administrative & support | 2009 |
| Fluidedge Ltd | Information & communication | 2024 |
| Flyj Airlines Ltd | Transport & logistics | 2022 |
| FM Made Simple Ltd | Other services | 2021 |
| FMP Engineering Limited | Other services | 2019 |
| Folefac Energy Solutions Limited | Professional & scientific | 2025 |
| Food Ingredients Hub Ltd | Hospitality | 2025 |
| Food Sector Design Limited | Professional & scientific | 2023 |
| Football Fitness Academy Ltd | Education | 2023 |
| Footman Education Limited | Public administration | 2012 |
| Forbury Living Limited | Real estate | 2019 |
| Force of Nature Nutrition Ltd | Health & social care | 2020 |
| Force One Limited | Construction | 2004 |