| Favorita UK Ltd | Hospitality | 2018 |
| Favourcaregm Limited | Public administration | 2026 |
| FAY Medical Services Ltd | Health & social care | 2025 |
| Fay's Coffee Limited | Hospitality | 2017 |
| FBM Refurbishment Ltd | Construction | 2021 |
| FBP Ventures Ltd | Education | 2004 |
| Fc&H Consulting Ltd | Information & communication | 2024 |
| FCP (Tring) Ltd | Wholesale & retail | 2025 |
| FCS Automation Limited | Professional & scientific | 1998 |
| Fdac Support Limited | Health & social care | 2025 |
| FDW4WHEELS Ltd | Transport & logistics | 2014 |
| Feal Healed Limited | Health & social care | 2024 |
| Fearless Society Ltd | Manufacturing | 2026 |
| Feast Online Ltd | Information & communication | 2023 |
| Feather Grey Consulting Limited | Information & communication | 2018 |
| Feathers Performance Academy Ltd | Education | 2018 |
| Feature Motor Company Limited | Wholesale & retail | 2025 |
| Febe Growth 100 Limited | Professional & scientific | 2021 |
| Febe Ventures Limited | Professional & scientific | 2013 |
| Fedak Autosolutions Ltd | Wholesale & retail | 2024 |
| Feedandback Ltd | Hospitality | 2022 |
| Feetwise Ltd | Health & social care | 2015 |
| Fehr Homes Limited | Households | 2023 |
| Felicia Haulage Limited | Transport & logistics | 2026 |
| Fella Creative Limited | Professional & scientific | 2023 |
| Felmersham and Radwell Community Trust | Other services | 2003 |
| Felsham Educational Enterprises Ltd | Professional & scientific | 2022 |
| Feltham Electrical Services Limited | Construction | 2023 |
| Fenlake Auto Electrical Services (Bedford) Limited | Wholesale & retail | 2015 |
| Fenlake Group Ltd | Hospitality | 2014 |
| Fenlakes Limited | Information & communication | 2006 |
| Fenns Fencing Ltd | Construction | 2021 |
| Fenton Engineering Ltd | Construction | 2022 |
| Ferguson Psychology Services Ltd. | Health & social care | 2014 |
| Fernbright Ltd | Administrative & support | 2022 |
| Ferreiraliving Ltd | Manufacturing | 2021 |
| Fervour Limited | Wholesale & retail | 2010 |
| Fetch Club Ltd | Other services | 2020 |
| Fetch Club Shop Ltd | Wholesale & retail | 2022 |
| Fetch Club Training Limited | Education | 2022 |
| Fetcheveryone Ltd | Information & communication | 2017 |
| Fevie Limited | Information & communication | 2013 |
| FF34 Ltd | Health & social care | 2024 |
| FH Bedford Properties Ltd | Households | 2021 |
| Fhalora Footprint Property Ltd | Real estate | 2021 |
| Fhiit Club Ltd | Arts & recreation | 2022 |
| Fhmamazon Ltd | Wholesale & retail | 2022 |
| FHN Haulage Ltd | Transport & logistics | 2021 |
| Fiabi Care Limited | Extraterritorial | 2014 |
| Fiber Tech Solutions Limited | Construction | 2020 |
| Fibre Provider Ltd | Information & communication | 2025 |
| Fibre TV to Home Limited | Manufacturing | 2009 |
| Fibrescape Networks Limited | Information & communication | 2017 |
| Ficility Limited | Information & communication | 2018 |
| Fiddles N Flutes Festival Limited | Arts & recreation | 2025 |
| Fidelity Solutions Limited | Manufacturing | 1999 |
| Fides Developments Ltd | Construction | 2018 |
| Fidus Sports Limited | Arts & recreation | 2025 |
| Field View Cottages Management Limited | Administrative & support | 2012 |
| Fielden Court Management Company Limited | Households | 1995 |
| Fieldfare IT Consulting Ltd | Information & communication | 2025 |
| Fifi's Leavers Shirt Ltd | Wholesale & retail | 2026 |
| Fifteen Properties Limited | Real estate | 2022 |
| Fiftythree Investments Ltd | Real estate | 2024 |
| Fighting Tigers Limited | Professional & scientific | 2024 |
| Figtree Finance Limited | Professional & scientific | 2018 |
| Fill My JOB Limited | Administrative & support | 2015 |
| Filomena Ltd | Manufacturing | 2021 |
| Filson AM Ltd | Households | 2019 |
| Filson Ventures Ltd | Financial services | 2018 |
| Filter Digital Limited | Information & communication | 2016 |
| Filter Holdings Limited | Financial services | 2023 |
| Filter Investments Holdings Limited | Financial services | 2023 |
| Finance Systems Solutions Ltd | Information & communication | 2016 |
| Financial Matters (UK) Ltd | Financial services | 2013 |
| Finanix Ltd | Real estate | 2022 |
| Find Cover and Link Ltd | Public administration | 2022 |
| Find IT in China Limited | Professional & scientific | 2019 |
| Find My Dream Car Ltd | Wholesale & retail | 2025 |
| Find YOU Counselling Psychology Limited | Health & social care | 2018 |
| Find Your Bliss Retreats Ltd | Other services | 2024 |
| Finding Joy Psychological Services Ltd | Health & social care | 2025 |
| Fine Brush Decorating Ltd | Construction | 2022 |
| Fineaction Limited | Professional & scientific | 2002 |
| Finer Detail Barbers Ltd | Other services | 2019 |
| Finestcleaners Ltd | Administrative & support | 2020 |
| Finks Limited | Information & communication | 1994 |
| Finlix Limited | Wholesale & retail | 2025 |
| Finsbury Designs Ltd | Construction | 2002 |
| Finsight AI Limited | Information & communication | 2025 |
| Fintech Core Systems Ltd | Information & communication | 2021 |
| Fintech Software Engineers Ltd | Information & communication | 2021 |
| Fintecon Limited | Information & communication | 2022 |
| Fiorant Properties Limited | Real estate | 2024 |
| Fire Light Design & Project Management Ltd | Arts & recreation | 2008 |
| Fire Nest Studio Limited | Manufacturing | 2021 |
| Fire Response (UK) Limited | Construction | 2015 |
| Fire Risk Associates Ltd | Professional & scientific | 2018 |
| Fire Risk Services Ltd | Administrative & support | 2007 |
| Fire Safety Assist Ltd | Other services | 2018 |