| Faugeres House Limited | Real estate | 1999 |
| Fauji Trading Ltd | Wholesale & retail | 2015 |
| Faulkner-Walsh and Sons Limited | Wholesale & retail | 2019 |
| Faulkner-Walsh Therapies Limited | Health & social care | 2022 |
| Favouredchoice Ltd | Wholesale & retail | 2024 |
| Fawaz Logistics Ltd | Transport & logistics | 2022 |
| Fawziya Riaz Abdul Aziz Ltd | Financial services | 2016 |
| Faxtonrecruitment Ltd | Administrative & support | 2025 |
| Fayzzan Design Co Ltd | Professional & scientific | 2025 |
| FAZ Promotions Limited | Professional & scientific | 2025 |
| Fazal Abbas Ltd | Wholesale & retail | 2021 |
| Fazal E Mukhtar Foods Ltd | Hospitality | 2026 |
| FB Health Limited | Health & social care | 2023 |
| FBA Prep for YOU Ltd | Wholesale & retail | 2023 |
| Fbiy Limited | Health & social care | 2018 |
| FC Engineering Limited | Wholesale & retail | 2024 |
| FC Medical Ltd | Health & social care | 2022 |
| FD Logistics Ltd | Transport & logistics | 2012 |
| FE & Skills Consultancy Ltd | Education | 2021 |
| FE3DPRINT Ltd | Manufacturing | 2025 |
| Feather Lettings Ltd | Real estate | 2026 |
| Featherbank Limited | Real estate | 2019 |
| Feature Interiors Ltd. | Wholesale & retail | 2019 |
| FEB Olifant Ltd | Transport & logistics | 2024 |
| Febire Groups Ltd | Real estate | 2025 |
| Feck Cams Ltd | Wholesale & retail | 2025 |
| Feelive Jewellery Co., Ltd | Wholesale & retail | 2022 |
| Feend Ltd | Hospitality | 2024 |
| Felicity Holdings Ltd | Financial services | 2020 |
| Fell Promotions Limited | Manufacturing | 2002 |
| Femperial Shop Ltd | Wholesale & retail | 2021 |
| Fenay Bridge Taxis Ltd | Transport & logistics | 2021 |
| Fenay Hall Management Company Limited | Households | 1991 |
| Fenay Machine Safety Limited | Professional & scientific | 2003 |
| Fence ALL Products Limited | Financial services | 2024 |
| Fendi Critical Services Limited | Manufacturing | 2023 |
| Fenghuang Autos Limited | Wholesale & retail | 2023 |
| Feniks Consulting Limited | Information & communication | 2025 |
| Fenrirblack Ltd | Wholesale & retail | 2025 |
| Fentray Ltd | Professional & scientific | 2014 |
| Fern Electrical Limited | Construction | 2003 |
| Ferndale Farm Ventures Ltd | Real estate | 2014 |
| Fernixus Ltd | Transport & logistics | 2024 |
| Ferreira Structural Engineering Ltd | Construction | 2023 |
| FES Surveying Limited | Professional & scientific | 2013 |
| FES Testing Limited | Administrative & support | 2011 |
| Festa System UK Ltd. | Manufacturing | 2020 |
| Festival Glass Limited | Manufacturing | 2002 |
| Fettle Agency Limited | Information & communication | 2025 |
| Ffoptics Ltd | Health & social care | 2021 |
| FFP Wheels Ltd | Manufacturing | 2016 |
| FG Heating and GAS Ltd | Construction | 2020 |
| Fghd Holdings Ltd | Real estate | 2024 |
| FHS Leisure Limited | Hospitality | 2013 |
| Fiadh Cee's Limited | Hospitality | 2024 |
| Fian Property Limited | Real estate | 2012 |
| Fibre Architects Ltd | Professional & scientific | 2009 |
| Fiddlers Investments Limited | Real estate | 2012 |
| Fidelior Solutions Limited | Transport & logistics | 2018 |
| Fidem Business Services Limited | Professional & scientific | 2020 |
| Field & Fetch Limited | Other services | 2026 |
| Field Landscaping Ltd | Administrative & support | 2022 |
| Field to Table Limited | Hospitality | 2025 |
| Fielding Solutions Ltd | Construction | 2012 |
| Fields of Gold Farm Weddings Ltd | Hospitality | 2025 |
| Fifteen Four Retail Limited | Wholesale & retail | 2024 |
| FIG and Olive Huddersfield Ltd | Extraterritorial | 2020 |
| Fika Recruitment Limited | Administrative & support | 2020 |
| Filedoc Limited | Administrative & support | 2011 |
| Fillans & Sons Limited | Information & communication | 1923 |
| Fillins Sandwich Shop Ltd | Hospitality | 2025 |
| Filly's Automotive Ltd | Professional & scientific | 2025 |
| Filters-R-Us Ltd | Wholesale & retail | 2016 |
| Fima Electrical Services Ltd | Construction | 2022 |
| Fimes Engineering Services Ltd | Professional & scientific | 2023 |
| Final Analytics Limited | Professional & scientific | 2017 |
| Financial Cycle Limited | Financial services | 2018 |
| Financial Framework Group Holdings Limited | Financial services | 2021 |
| Financial Framework Limited | Professional & scientific | 2011 |
| Financial Framework Wealth & Estate Planning Limited | Professional & scientific | 2018 |
| Financial Intermediary and Broker Association Limited | Professional & scientific | 2010 |
| Find a Space Theatre Company LLP | | 2019 |
| Find N Shop Ltd | Wholesale & retail | 2025 |
| Find Your Talent Limited | Administrative & support | 2026 |
| Finding the Difference Limited | Professional & scientific | 2014 |
| Fine Bakers Limited | Hospitality | 2006 |
| Fine Cleaning Services Ltd | Administrative & support | 2024 |
| Fine Fettle Medical Ltd | Health & social care | 2020 |
| Fingertip Solutions Limited | Information & communication | 2011 |
| Finity Services Limited | Wholesale & retail | 2025 |
| Finlayson (UK) Limited | Professional & scientific | 2017 |
| Finnwood IT Limited | Information & communication | 2023 |
| Fintel AI Ventures Holdco Limited | Other services | 2026 |
| Fintel Corporate Services Limited | Administrative & support | 2025 |
| Fintel Group Holdings Limited | Financial services | 2023 |
| Fintel Group Limited | Professional & scientific | 2010 |
| Fintel IQ Limited | Financial services | 2022 |
| Fintel IQ Services Limited | Information & communication | 2023 |
| Fintel Labs Limited | Financial services | 2022 |
| Fintel PLC | Professional & scientific | 2015 |