| Five Education Recruitment Limited | Administrative & support | 2018 |
| Five Frederick Place Clifton Limited | Households | 1979 |
| Five Gates Properties Limited | Real estate | 2018 |
| Five Gloucester ROW Management Limited | Households | 1978 |
| Five Knights Property Ltd | Real estate | 2019 |
| Five Limerick Ltd | Households | 2022 |
| Five Mile Films Limited | Arts & recreation | 2018 |
| Five Oak Shires Limited | Financial services | 2021 |
| Five Rolling Valleys Ltd | Hospitality | 2017 |
| Five Sparks Ltd | Construction | 2014 |
| Five Star Stay Property Ltd | Hospitality | 2026 |
| Five Star Travel (UK) Ltd | Transport & logistics | 2002 |
| Five Star Welcome Ltd | Hospitality | 2022 |
| Five-Nine Designs Ltd | Information & communication | 2010 |
| Fivetran UK Limited | Information & communication | 2021 |
| Fiveways Consulting Services Ltd. | Professional & scientific | 2022 |
| Fiveways Financial Planning Limited | Financial services | 2011 |
| Fiveways Property Management Limited | Real estate | 2018 |
| Fiveways Wealth Management Limited | Financial services | 2017 |
| Fivox Developments Limited | Construction | 2021 |
| FIX Mobilez Ltd | Information & communication | 2019 |
| FIX My Truck Online Ltd | Wholesale & retail | 2025 |
| FIX Scaffolding Ltd | Construction | 2025 |
| Fixall Construction Limited | Construction | 2014 |
| Fixall Diamond Drilling Ltd | Construction | 2026 |
| Fixaphone Limited | Wholesale & retail | 2017 |
| Fixation Networks Limited | Information & communication | 2001 |
| Fixea Ltd | Construction | 2022 |
| Fixify Homes Limited | Manufacturing | 2025 |
| Fixing Shadows Ltd | Information & communication | 2024 |
| Fixit D.I.Y. Limited | Real estate | 1976 |
| Fixit Scaffolding Bristol Ltd | Construction | 2013 |
| Fixpro Services Limited | Construction | 2025 |
| Fixright Property Services Limited | Households | 2025 |
| Fixtexx Limited | Wholesale & retail | 2024 |
| Fixture Group Limited | Information & communication | 2022 |
| Fiyawater Ltd | Wholesale & retail | 2025 |
| Fizi Housing Ltd | Construction | 2025 |
| Fizz Hair Ltd | Other services | 2015 |
| Fizzical Dexterity Ltd | Other services | 2022 |
| Fizzy Bath Ltd | Wholesale & retail | 2026 |
| Fizzy Collective Ltd | Other services | 2024 |
| Fizzy Media Limited | Information & communication | 2000 |
| FJ Curran Enterprise Ltd | Wholesale & retail | 2023 |
| FJ Management Consultants Ltd | Professional & scientific | 2018 |
| FJC Renovations Ltd | Construction | 2025 |
| FJH Scaffolding Ltd | Construction | 2018 |
| FJR Centre Ltd | Wholesale & retail | 2024 |
| Fjrresearch Ltd | Professional & scientific | 2025 |
| FJW Properties Limited | Real estate | 2017 |
| Fkia Limited | Administrative & support | 2019 |
| FKP Services Ltd | Construction | 2006 |
| FL Collaborative Consulting Ltd | Professional & scientific | 2026 |
| FL Diamonds Ltd | Manufacturing | 2019 |
| FL Group Holdings Limited | Financial services | 2022 |
| Flag Bikes Ltd | Wholesale & retail | 2013 |
| Flagship Consulting Construction Recruitment Specialists Limited | Administrative & support | 2011 |
| Flagship Pioneering UK Limited | Administrative & support | 2020 |
| Flagstar Properties Limited | Real estate | 2024 |
| Flagstone Lettings Limited | Real estate | 2020 |
| Flagstone Property Limited | Real estate | 2018 |
| Flagtech Ltd | Information & communication | 2022 |
| Flaherty Publishing Ltd | Information & communication | 2013 |
| Flailsafe Ltd | Administrative & support | 2025 |
| Flair 4 Recruitment Limited | Administrative & support | 2004 |
| Flamanco (Flats Management) Company Limited | Households | 1992 |
| Flamborough Farms Limited | Agriculture & fishing | 2011 |
| Flame Imports & Distribution Ltd | Wholesale & retail | 2024 |
| Flame Investments Ltd | Real estate | 2021 |
| Flame Lily Carers Limited | Health & social care | 2009 |
| Flame Marine Limited | Professional & scientific | 2008 |
| Flame on! Bristol Limited | Professional & scientific | 2012 |
| Flame Optics PC | | 2020 |
| Flamers Food Ltd | Hospitality | 2019 |
| Flamingo Creative Limited | Professional & scientific | 2007 |
| Flamingo for Ngos Ltd | Professional & scientific | 2012 |
| Flamingoo IT Ltd | Information & communication | 2025 |
| Flamyay Ltd | Information & communication | 2025 |
| Flanagan Carpentry Limited | Construction | 2003 |
| Flanagan Properties (Bristol) Limited | Real estate | 2022 |
| Flanagans Properties Ltd | Real estate | 2020 |
| Flare Communications Ltd | Professional & scientific | 2024 |
| Flare Digital Media Limited | Information & communication | 2024 |
| Flash Couriers Ltd | Transport & logistics | 2021 |
| Flash Electrical (SW) Ltd | Construction | 2017 |
| Flash Investments LLP | | 2011 |
| Flash Taxi's Ltd | Transport & logistics | 2018 |
| Flashpacker Limited | Wholesale & retail | 2015 |
| Flashpoint Climbing Group Limited | Professional & scientific | 2024 |
| Flat Management Co. Accounts Limited | Professional & scientific | 1996 |
| Flat OUT (Bristol) Limited | Construction | 2006 |
| Flat OUT (Bristol) Number 1 Limited | Real estate | 2020 |
| Flat Roof Restorations Limited | Construction | 2019 |
| Flat Roofing Consultants Ltd | Construction | 2008 |
| Flatline Bristol Limited | Households | 2018 |
| Flatman Enterprise Consultancy Ltd | Professional & scientific | 2019 |
| Flatpack Motion Media Design Limited | Professional & scientific | 2017 |
| Flatpackuk Limited | Manufacturing | 2019 |
| Flats 9A, 9B & 9C, Ashley Down Road Limited | Administrative & support | 2014 |
| Flats R US (Bristol) Limited | Construction | 2006 |