| Find Your Wild C.I.C. | Education | 2018 |
| Fine Home Sales Limited | Real estate | 2008 |
| Finest Stays Ltd | Hospitality | 2022 |
| Finish Electrical Limited | Energy | 2015 |
| Fire & Security Total Solutions Ltd | Administrative & support | 2011 |
| Fire Barrier Limited | Construction | 2019 |
| Fire Barrier London Limited | Construction | 2014 |
| Fire Design Limited | Wholesale & retail | 2005 |
| Fireworld (Exeter) Ltd | Construction | 2016 |
| Fireworld (Torquay) Ltd | Construction | 2016 |
| Firlands (Management) Limited | Real estate | 2002 |
| First Avenue Services Limited | Administrative & support | 2019 |
| First Avenue Support Services Limited | Health & social care | 2017 |
| First Call Consultancy Ltd | Professional & scientific | 2016 |
| Five Star Delivery Ltd | Transport & logistics | 2025 |
| FIX Device Limited | Manufacturing | 2019 |
| Flag Staunton Limited | Real estate | 2021 |
| Flameout Limited | Public administration | 2025 |
| Flamingo Industrial Limited | Real estate | 2024 |
| Flamingo Lodge Ltd | Hospitality | 2022 |
| Fleet Cafe Ltd | Hospitality | 2026 |
| Fleet Street Tattoo Ltd | Other services | 2023 |
| Fletcher Oakmont Limited | Administrative & support | 2025 |
| Flipflow Ltd | Administrative & support | 2025 |
| Flipstream Engineering Ltd | Information & communication | 2024 |
| Floatricity Limited | Energy | 2022 |
| Flotech Plumbing & Heating Engineers Ltd | Construction | 2024 |
| Flower LA Vita Limited | Wholesale & retail | 2022 |
| Flo’S Super Clean Cleaning Services Ltd | Administrative & support | 2021 |
| Fluence Creative Ltd | Professional & scientific | 2023 |
| Flying Bees Ltd | Extraterritorial | 2020 |
| Flying Horses Property Limited | Construction | 2021 |
| FM Joint Limited | Construction | 2018 |
| FMB Sidmouth LLP | | 2019 |
| FMB the Quay LLP | | 2015 |
| Follow My Lead - the Canine Advocate Ltd | Other services | 2025 |
| Fone Centre 1 Ltd | Wholesale & retail | 2025 |
| Fone Centre Limited | Wholesale & retail | 2020 |
| Fone Repair Centre Limited | Wholesale & retail | 2025 |
| Food Equipment Direct Limited | Professional & scientific | 1998 |
| Footmail Ltd | Transport & logistics | 2022 |
| FOR 20 Holdings Limited | Real estate | 2026 |
| FOR the Love of Swim Ltd | Arts & recreation | 2023 |
| Forder Estates Limited | Financial services | 2020 |
| Forestry Warriors Ltd | Extraterritorial | 2024 |
| Forever Consulting Ltd | Administrative & support | 2022 |
| Forever Landscapes Ltd | Construction | 2018 |
| Forman Joinery Ltd | Manufacturing | 2023 |
| Fort George Limited | Real estate | 1952 |
| Fort Horsted Care Home Ltd | Health & social care | 2016 |
| Foulger Associates Limited | Households | 2019 |
| Foundations Residential Limited | Real estate | 2007 |
| Fountain House (Torquay) Limited | Households | 1995 |
| Four Bare Paws Limited | Wholesale & retail | 2025 |
| Four Sides Engineering Limited | Administrative & support | 2018 |
| Foxfield Property Management Ltd | Real estate | 2005 |
| Foxglove CV Limited | Professional & scientific | 2018 |
| Foxlands Management Company Limited | Households | 2006 |
| Foxy Golf Limited | Wholesale & retail | 2021 |
| Fragrance UK - Luxury Hotel Management 2 Limited | Hospitality | 2025 |
| Fragrance UK - Plymouth Limited | Financial services | 2019 |
| Fragrance UK - Weston Super Mare Limited | Financial services | 2022 |
| Fragrance UK Investment Limited | Financial services | 2016 |
| Fragrance UK Luxury Hotel Management Limited | Hospitality | 2022 |
| Fragrance UK- Bath Limited | Financial services | 2017 |
| Fragrance Uk-Blackpool 2 Limited | Financial services | 2017 |
| Fragrance Uk-Blackpool 3 Limited | Financial services | 2017 |
| Fragrance Uk-Blackpool Limited | Financial services | 2016 |
| Fragrance Uk-Eastbourne Limited | Financial services | 2023 |
| Fragrance Uk-Harrogate Limited | Financial services | 2017 |
| Fragrance Uk-Hotel Management Limited | Hospitality | 2021 |
| Fragrance Uk-Liverpool 2 Limited | Financial services | 2018 |
| Fragrance Uk-Liverpool Limited | Financial services | 2016 |
| Fragrance Uk-Manchester Limited | Financial services | 2017 |
| Fragrance Uk-Paignton 2 Limited | Financial services | 2017 |
| Fragrance Uk-Paignton 3 Limited | Financial services | 2022 |
| Fragrance Uk-Paignton Limited | Financial services | 2017 |
| Fragrance Uk-Torquay 2 Limited | Financial services | 2017 |
| Fragrance Uk-Torquay Limited | Financial services | 2017 |
| Frances Healy Interiors Ltd | Professional & scientific | 2015 |
| Francis Clark Charitable Foundation | Administrative & support | 2015 |
| Francis Clark Financial Planning (Holdings) Limited | Financial services | 2021 |
| Francis Clark Financial Planning Limited | Financial services | 2005 |
| Francis Clark LLP | | 2009 |
| Francis Clark Tax Consultancy Limited | Professional & scientific | 2003 |
| Francis Clark Trust Corporation Limited | Financial services | 2019 |
| Frank Care Solutions Ltd | Construction | 2020 |
| Frank H. Mann (Torquay) Limited | Wholesale & retail | 1961 |
| Frankies Property Limited | Real estate | 2017 |
| Freddy's Pappas Limited | Hospitality | 2025 |
| Freebridge Holdings Limited | Information & communication | 2021 |
| Freedom 35 Ltd | Hospitality | 2022 |
| Freedom 4 YOU Limited | Health & social care | 2018 |
| Freedom Fields Care Ltd | Health & social care | 2019 |
| Fresh Security Solutions Ltd | Administrative & support | 2014 |
| Freshairjunkie Limited | Wholesale & retail | 2013 |
| Frisky Finn Ltd | Financial services | 2010 |
| Froacs Limited | Professional & scientific | 2016 |
| From Home 2 Home Lettings Limited | Real estate | 2020 |
| Front Focus Ltd | Wholesale & retail | 2023 |