| Fawce Ltd | Information & communication | 2025 |
| Fay's Pizza Ltd | Hospitality | 2025 |
| Fayrouz Roastery Ltd | Hospitality | 2026 |
| Fazilat Foundation UK | Professional & scientific | 2018 |
| Fazriki Ltd | Financial services | 2013 |
| FB 47 Limited | Construction | 2007 |
| FB 76 Limited | Real estate | 2009 |
| FB Kebab Ltd | Hospitality | 2024 |
| FB Leisure Ltd | Hospitality | 2018 |
| FBA Mogul Training Ltd | Education | 2025 |
| FBK Traders Ltd | Wholesale & retail | 2020 |
| FBN Hire Services Ltd | Other services | 2026 |
| FBN Property Group Ltd | Real estate | 2025 |
| FBN Rental Taxi UK Ltd | Administrative & support | 2025 |
| FBN Taxi Rental Ltd | Administrative & support | 2016 |
| FBN Taxi Services Ltd | Financial services | 2018 |
| FBS International Ltd | Transport & logistics | 2020 |
| FC Dental Ltd | Health & social care | 2023 |
| FC Pharmaceutical Ltd | Wholesale & retail | 2023 |
| FCL Nottingham Ltd | Education | 2020 |
| FCM Keyworth Limited | Households | 2025 |
| FCW Content Limited | Information & communication | 2025 |
| FCZ Ltd | Real estate | 2019 |
| FD Coach Limited | Professional & scientific | 2023 |
| FD Lettings Ltd | Real estate | 2025 |
| Fdba Limited | Financial services | 2014 |
| FDC UK Transport Limited | Transport & logistics | 2022 |
| FDG Group Limited | Construction | 2014 |
| FDL Property Ltd | Real estate | 2023 |
| FDW Thermal Limited | Financial services | 2025 |
| Fe.Ba. Properties Ltd | Real estate | 2024 |
| Fear and Clothing Ltd | Wholesale & retail | 2021 |
| Fearless Trauma Services CIC | Health & social care | 2025 |
| Fearless Youth Association Limited | Information & communication | 2018 |
| Fearns Windows & Doors Limited | Administrative & support | 2026 |
| Feast & FUN Ltd | Wholesale & retail | 2025 |
| Feast UP UK Limited | Hospitality | 2021 |
| Feather Edge Ltd | Manufacturing | 2024 |
| Featheredge Timber Ltd | Wholesale & retail | 2022 |
| Featherfoot Halton 5 Limited | Financial services | 2020 |
| Featherfoot Lock Street Limited | Financial services | 2021 |
| Featherhill Ltd | Hospitality | 2025 |
| Feathermen Consulting Limited | Professional & scientific | 2023 |
| Feathers Creative Ltd | Professional & scientific | 2025 |
| Featherstone Consulting Limited | Professional & scientific | 2018 |
| Featherstone Investment Capital | Financial services | 2019 |
| Featherville Ltd | Hospitality | 2025 |
| Febin&Fiona Ltd | Health & social care | 2015 |
| Febro Limited | Real estate | 2002 |
| Fedary Ltd | Wholesale & retail | 2026 |
| Fede&Eve Ltd | Transport & logistics | 2025 |
| Fedem Care Limited | Health & social care | 2024 |
| Feel Amazing BE Amazing Limited | Information & communication | 2018 |
| Feel Clear Ltd | Manufacturing | 2015 |
| Feel the Heat GAS & OIL Services Ltd | Construction | 2023 |
| Feelunique International Limited | Wholesale & retail | 2011 |
| Feetham & DON Ltd | Construction | 2003 |
| Fejar Consultancy & Bespoke Training Ltd | Professional & scientific | 2025 |
| Felicity Engineering Solutions Ltd | Professional & scientific | 2023 |
| Felley Mill Fencing Limited | Administrative & support | 2018 |
| Felley Mill Holdings Limited | Financial services | 2026 |
| Felley Mill Properties Limited | Real estate | 2022 |
| Felley Mill Property Investments Ltd | Real estate | 2024 |
| Felley Pantry Ltd | Hospitality | 2019 |
| Fellini Textiles Limited | Wholesale & retail | 1998 |
| Felt Care Ltd | Health & social care | 2020 |
| FEM. Collective Ltd | Wholesale & retail | 2025 |
| Femoy Healthcare Limited | Health & social care | 2018 |
| Fencing and Lighting Contractors Ltd | Construction | 2008 |
| Fenflo Limited | Construction | 2011 |
| Fenimore Court Residents Association Limited | Households | 1973 |
| Fenix Flames Publishing Ltd | Information & communication | 2020 |
| Fenix Rail & Engineering Ltd | Construction | 2023 |
| Fenmarsh Ltd | Professional & scientific | 2024 |
| Fennel & Coriander Limited | Wholesale & retail | 2020 |
| Fennell Interiors Limited | Construction | 2017 |
| Fennia DRU Limited | Wholesale & retail | 2022 |
| Fenton Electrical Contractors Ltd | Construction | 2012 |
| Fenton's Domestic Cleaning Ltd. | Administrative & support | 2017 |
| Feras Barbers Ltd | Other services | 2024 |
| Feras Beauty Ltd | Other services | 2026 |
| Ferchima Holdings Limited | Wholesale & retail | 2023 |
| Ferchima Limited | Wholesale & retail | 2020 |
| Ferdo Limited | Professional & scientific | 2019 |
| Ferguson House RTM Company Limited | Households | 2022 |
| FERM8 Ltd | Manufacturing | 2023 |
| Ferndale Care Services Limited | Health & social care | 2000 |
| Fernmac Limited | Construction | 2002 |
| Fernwell Psychology Ltd | Health & social care | 2024 |
| Fernwood Agriculture Limited | Agriculture & fishing | 2012 |
| Fernwood Group Limited | Professional & scientific | 2000 |
| Fernwood Investments Limited | Professional & scientific | 1998 |
| Fernwood Property Holdings Limited | Financial services | 2024 |
| Ferris Holdings 2011 Ltd | Extraterritorial | 2011 |
| Fertility Freedom Focused Ltd | Public administration | 2025 |
| Fertility Professionals Ltd | Health & social care | 2024 |
| FES Construction Consultancy Group Limited | Professional & scientific | 2013 |
| Festival Crescent Management Company Limited | Households | 2011 |
| Festygreat-Divers Enterprise Limited | Real estate | 2011 |
| Fetch Pet Care Ltd | Agriculture & fishing | 2024 |