| Fimoti General Services Limited | Hospitality | 2025 |
| Finch Inspections Ltd | Professional & scientific | 2016 |
| Finco Homes Limited | Extraterritorial | 2023 |
| Findaway Stays Ltd | Hospitality | 2026 |
| Fine Point Tattoo Limited | Other services | 2025 |
| Fine Wire Ltd | Manufacturing | 2017 |
| Finedinecanine Limited | Manufacturing | 2023 |
| Finenalysis Ltd | Financial services | 2012 |
| Finesse Brides & Grooms Ltd | Wholesale & retail | 2023 |
| Finhar Ltd | Financial services | 2019 |
| Finishing Touches Decorating Ltd | Construction | 2022 |
| Firbeck Hall Ltd | Professional & scientific | 2011 |
| Fire & Fizz Catering Ltd | Hospitality | 2026 |
| Fire & Light Limited | Construction | 2009 |
| Fire ET AL Ltd | Wholesale & retail | 2009 |
| Fire Training Equipment Consultancy Services Ltd | Other services | 2020 |
| Fireflyapps Limited | Information & communication | 2012 |
| Fireplaces at Coney Green Limited | Construction | 2018 |
| Firestar Property Ltd | Real estate | 2022 |
| Firework Factory Pyrotechnics Limited | Wholesale & retail | 2017 |
| First Accountancy Business Accountants Ltd. | Administrative & support | 2002 |
| First Born Hospitality Ltd | Hospitality | 2024 |
| First Light Adventure Ltd | Arts & recreation | 2021 |
| First Name Ltd | Extraterritorial | 2005 |
| First Rate Telecom Solutions Ltd | Information & communication | 2018 |
| First Realm Limited | Arts & recreation | 2022 |
| First Stage Machining Co Ltd | Manufacturing | 2020 |
| First Stop News Limited | Wholesale & retail | 2011 |
| FIRST4FASHION Limited | Transport & logistics | 2003 |
| Firwood Construction Solutions Ltd | Construction | 2014 |
| Fit in Life Limited | Arts & recreation | 2019 |
| Fitgirlcompany Limited | Arts & recreation | 2023 |
| Fitzhill Financial Services Ltd | Professional & scientific | 2026 |
| Fitzwise Limited | Mining & quarrying | 1973 |
| Five Acre KOI Supplies Ltd | Agriculture & fishing | 2005 |
| Five Rise Quarter (Bingley) Management Company Limited | Households | 2025 |
| FIZIOMED-64 Limited | Health & social care | 2018 |
| FJ Academy Ltd | Health & social care | 2022 |
| FJ Accountants Limited | Professional & scientific | 2023 |
| FL Accountancy Services Ltd | Professional & scientific | 2023 |
| Flagmakers Limited | Extraterritorial | 2009 |
| Flagship Shopfitters Ltd | Construction | 2009 |
| Flamecare (Homeplan) Ltd | Construction | 2014 |
| Flamenco Coffee Co Limited | Wholesale & retail | 2024 |
| Flamingo Pubs Ltd | Hospitality | 2026 |
| Fleet and Vehicle Contracts Limited | Wholesale & retail | 2013 |
| Fleet Maintain Ltd | Administrative & support | 2024 |
| Fleetplan Group Holdings Limited | Financial services | 2026 |
| Fleetplan Limited | Professional & scientific | 2025 |
| Fletcher Robinson Limited | Manufacturing | 2002 |
| Fletcher Safety Ltd | Manufacturing | 2026 |
| Fletcher Wood Electrical Services Limited | Construction | 2017 |
| Fletcherbirch Limited | Financial services | 2023 |
| Flexal Springs Alliance Ltd | Manufacturing | 2017 |
| Flexible Consultants Ltd | Wholesale & retail | 2025 |
| Flexispark Solutions Ltd | Information & communication | 2025 |
| Flexopress Ltd | Manufacturing | 2022 |
| Flight Engineer Ltd | Other services | 2025 |
| Flintson Financial Services Ltd | Financial services | 2011 |
| Flintstone Advertising Ltd | Professional & scientific | 2025 |
| Flipping Brilliant Ltd | Construction | 2025 |
| Flird Homes Limited | Real estate | 2026 |
| Flocc Interiors Limited | Wholesale & retail | 2024 |
| Floors & Moore Limited | Construction | 2019 |
| Flossybox Ltd | Wholesale & retail | 2021 |
| Flowstate Consultancy Ltd | Information & communication | 2021 |
| Fluvion Ltd | Professional & scientific | 2026 |
| Flxd Ltd | Real estate | 2025 |
| FLY High Travel Chesterfield Ltd | Transport & logistics | 2024 |
| FM Civil Soloutions Ltd | Construction | 2025 |
| FO Property Investment Ltd | Real estate | 2024 |
| Focus on Feet Ltd | Health & social care | 2024 |
| Foil Squad Ltd | Wholesale & retail | 2024 |
| FOK the Counsellor Ltd | Health & social care | 2021 |
| Folc Studio CIC | Health & social care | 2023 |
| Fone FIX 4U (Chesterfield) Ltd | Wholesale & retail | 2024 |
| Food Service Solutions (UK) Ltd | Manufacturing | 2003 |
| Foot Box Ltd | Wholesale & retail | 2019 |
| Foot Sanctuary Ltd | Wholesale & retail | 2021 |
| Footco 37 Limited | Financial services | 2022 |
| Footco 38 Limited | Financial services | 2022 |
| Footco 39 Limited | Financial services | 2022 |
| Footco 40 Limited | Financial services | 2022 |
| Footprints Accountancy Ltd | Professional & scientific | 2010 |
| Footprints in the Sand Ltd | Administrative & support | 2021 |
| Footprints Tower Limited | Real estate | 2017 |
| Ford PM Consulting Ltd | Professional & scientific | 2025 |
| Forefront Design Limited | Professional & scientific | 2012 |
| Forefront Security Ltd | Administrative & support | 2024 |
| Forefront Technology Limited | Information & communication | 2019 |
| Foresters Halls Limited | Real estate | 2022 |
| Fork Truckman Limited | Education | 2016 |
| Forrest Management Limited | Real estate | 2007 |
| Fort Security Services Limited | Administrative & support | 2020 |
| Fortis Brickwork Limited | Construction | 2003 |
| Fortress Bookkeeping Limited | Professional & scientific | 2016 |
| Fortress Lettings Ltd | Real estate | 2022 |
| Fortuna Terra Ltd | Real estate | 2025 |
| Foster Real Estates Ltd | Real estate | 2023 |
| Fosters Surveyors Limited | Professional & scientific | 2012 |