| Four Mills Investments Limited | Financial services | 2022 |
| Four Pines Properties Limited | Real estate | 2012 |
| Four Seasons Private Care Ltd | Health & social care | 2022 |
| Four Seasons Recruitment Services Ltd | Administrative & support | 2024 |
| Four Sisters Land Limited | Real estate | 2020 |
| Four Tops Ltd | Health & social care | 2026 |
| Fourboys Properties Limited | Construction | 2017 |
| Fourpoint Limited | Transport & logistics | 2002 |
| Fourways Car Sales Limited | Wholesale & retail | 2024 |
| Fourways Window Cleaning Ltd | Administrative & support | 2025 |
| Fourzerotwo Consulting Ltd | Administrative & support | 2022 |
| FOX & Lark Limited | Arts & recreation | 2005 |
| FOX Cafe Limited | Hospitality | 2015 |
| FOX Jewellery Limited | Wholesale & retail | 2014 |
| FOX Physique Limited | Arts & recreation | 2015 |
| FOX Search Limited | Administrative & support | 2009 |
| FOX Short Lets Ltd | Real estate | 2024 |
| Foxar Ltd | Wholesale & retail | 2026 |
| Foxassured Ltd | Information & communication | 2026 |
| Foxbridge Planning Ltd | Professional & scientific | 2026 |
| Foxcube Limited | Information & communication | 2018 |
| Foxglove One Ltd | Real estate | 2020 |
| Foxhall (the Poynt) Limited | Real estate | 2025 |
| Foxhall Business Centres Ltd | Real estate | 2002 |
| Foxhill (Estates) Limited | Construction | 2017 |
| Foxhill Farms Limited | Real estate | 2014 |
| Foxhill Furnishings (Nottingham) Limited | Construction | 2009 |
| Foxio Ltd | Professional & scientific | 2025 |
| Foxley Property Consultants Ltd | Real estate | 2026 |
| Foxman Solutions Limited | Professional & scientific | 2023 |
| Foxsmith Limited | Administrative & support | 2026 |
| Foxsons Same Day Ltd | Transport & logistics | 2019 |
| Foxtonland Limited | Real estate | 2019 |
| Foxtrotter Coaching Ltd | Arts & recreation | 2024 |
| Foxwood Academy | Education | 2012 |
| Foxwood Gardening Ltd | Administrative & support | 2025 |
| Foxy Air-Service Limited | Administrative & support | 2012 |
| Foxy Developments Limited | Real estate | 2020 |
| Foxy Wharton Ltd | Health & social care | 2022 |
| Foxyroks Ltd | Manufacturing | 2026 |
| Fox’S Bricks Ltd | Real estate | 2024 |
| Foyle River Films Ltd | Information & communication | 2022 |
| Foys Universe Ltd | Health & social care | 2022 |
| FP 2018 Limited | Wholesale & retail | 2018 |
| FP Bidco Limited | Financial services | 2016 |
| FP Connolly Ltd | Administrative & support | 2022 |
| FP Controls Limited | Administrative & support | 2016 |
| FP Equityco Limited | Financial services | 2017 |
| FPD Homes Ltd | Real estate | 2020 |
| FPL AI Limited | Information & communication | 2025 |
| FPM Training & Consultancy Limited | Professional & scientific | 2012 |
| Fpng Properties Ltd | Real estate | 2024 |
| FPS Environmental Ltd | Professional & scientific | 2019 |
| FPS Group Holdings Limited | Financial services | 2015 |
| FPX Holdings Limited | Financial services | 2023 |
| FPX Properties Limited | Real estate | 2023 |
| FR Services Ltd | Information & communication | 2025 |
| Fractal Learning Limited | Education | 2022 |
| Fradley Associates Limited | Professional & scientific | 2020 |
| Frafra Collective Ltd | Wholesale & retail | 2026 |
| Fragamania Ltd | Wholesale & retail | 2025 |
| Fragile Technologies Ltd | Information & communication | 2019 |
| Frame Hair and Beauty Ltd | Other services | 2020 |
| Frame Property and Development Ltd | Real estate | 2025 |
| Frame Property Investment Ltd | Real estate | 2025 |
| Framefiftysix Ltd | Information & communication | 2025 |
| Frames 2 Go Limited | Administrative & support | 2005 |
| Frametrade Windows Ltd | Manufacturing | 2015 |
| Framevox Studio Ltd | Information & communication | 2026 |
| Framework Housing Association | Real estate | 1997 |
| Frampton Management Company Limited | Financial services | 2023 |
| Francease Food International Ltd | Wholesale & retail | 2025 |
| Franchi Hairdressing Limited | Other services | 2001 |
| Francis & Co Accounting Limited | Professional & scientific | 2011 |
| Francis Industrial Roofing & Cladding Limited | Construction | 2001 |
| Franco Specialty Coffee Ltd | Wholesale & retail | 2024 |
| Franella Limited | Professional & scientific | 2013 |
| Frank DSA Ltd | Real estate | 2017 |
| Frank Exchange Limited | Other services | 2012 |
| Frank Goulding Investments Limited | Real estate | 2000 |
| Frank Goulding Limited | Construction | 1936 |
| Frank Hand Ltd | Manufacturing | 2017 |
| Frank Hodson Foundation Limited | Hospitality | 1948 |
| Frank Key (Bulwell) Limited | Wholesale & retail | 2008 |
| Frank Key (Nottingham) Limited | Wholesale & retail | 1951 |
| Frank Key Group Limited | Wholesale & retail | 2007 |
| Frank Key Holdings Limited | Wholesale & retail | 2021 |
| Frank Key Tool Hire Limited | Construction | 1968 |
| Frank Properties Management Ltd | Real estate | 2025 |
| Frank Wheway Engineering Limited | Professional & scientific | 2022 |
| Frankie Supply Ltd | Wholesale & retail | 2025 |
| Franklin Architectural Services Ltd | Construction | 2024 |
| Franklin Ellis (2022) Limited | Professional & scientific | 2022 |
| Franklin Ellis EOT Limited | Extraterritorial | 2022 |
| Franklin Ellis LLP | | 2008 |
| Fraser and Kamila Ltd | Real estate | 2017 |
| Fraserbank Limited | Real estate | 2012 |
| Fraserbank Management Company Limited | Administrative & support | 2009 |
| Frater Property Partners Ltd | Real estate | 2025 |
| Fratrem Group Ltd | Professional & scientific | 2012 |