| FSH (Leeds) Limited | Professional & scientific | 2011 |
| FSK Estate Holding Limited | Real estate | 2025 |
| FSL Leeds Ltd | Hospitality | 2022 |
| FSM Cleaning Services Ltd | Administrative & support | 2026 |
| FSN Medical Limited | Health & social care | 2022 |
| FST Consumables Limited | Wholesale & retail | 1977 |
| Fsub Ltd | Information & communication | 2025 |
| FT FOODS1 Limited | Hospitality | 2025 |
| FT Mcadam Properties Ltd | Real estate | 2026 |
| FT Merchants Ltd | Wholesale & retail | 2017 |
| FT Toy Factory Ltd | Wholesale & retail | 2025 |
| FTC Consulting Ltd | Professional & scientific | 2014 |
| FTH Management Ltd | Other services | 2026 |
| FTH Property Ltd | Real estate | 2020 |
| FTI (West Yorkshire) Limited | Professional & scientific | 2020 |
| FTI Cricket Tours Ltd | Arts & recreation | 2023 |
| FTI Sports Tours Ltd | Arts & recreation | 2010 |
| FTL Services Ltd | Financial services | 2020 |
| FTP Holdings Limited | Financial services | 2024 |
| FTR Associates Limited | Administrative & support | 2017 |
| Ftrp Limited | Professional & scientific | 2023 |
| Fubei Ltd | Hospitality | 2026 |
| Fuchen Limited | Hospitality | 2025 |
| Fuel Card Limited | Wholesale & retail | 1991 |
| Fuel Card Services Limited | Wholesale & retail | 1987 |
| Fuel Limited | Professional & scientific | 2011 |
| Fuelled by Savvy Baker Ltd | Manufacturing | 2023 |
| Fuelmyblog Limited | Information & communication | 2007 |
| Fuelpoint Ltd | Wholesale & retail | 2024 |
| Fueye Limited | Professional & scientific | 2010 |
| Fuji Hiro Holdings Limited | Hospitality | 2018 |
| Fuji Hiro Limited | Hospitality | 2011 |
| Fulcrum Metering Services Limited | Energy | 2016 |
| Fulcrum Smart Metering Ltd | Administrative & support | 2018 |
| Fulda Hauz UK Limited | Professional & scientific | 2025 |
| Fulger Delivery Ltd | Transport & logistics | 2025 |
| Fulham Fitness Solutions Limited | Arts & recreation | 2024 |
| Full Circle Business Support Services Ltd | Professional & scientific | 2017 |
| Full Circle Educational Consultancy Ltd | Education | 2021 |
| Full Circle Funerals Limited | Other services | 2015 |
| Full Circle HR Ltd | Administrative & support | 2024 |
| Full Circle Recruitment Solutions Ltd | Administrative & support | 2026 |
| Full Event Production Ltd | Arts & recreation | 2016 |
| Full Express UK Ltd | Transport & logistics | 2022 |
| Full Force Gym Ltd | Arts & recreation | 2022 |
| Full House Catering Limited | Hospitality | 2022 |
| Full Load Rubbish Removals Ltd | Water & waste | 2023 |
| Full Metal Grips Ltd | Information & communication | 2018 |
| Full Power Studios Ltd | Arts & recreation | 2023 |
| Full Scope Property Management Ltd | Real estate | 2025 |
| Full Sound Limited | Professional & scientific | 2008 |
| Full Steam Production Ltd | Professional & scientific | 2024 |
| Fullarton Education Ltd | Education | 2024 |
| Fuller Coaching Ltd | Other services | 2023 |
| Fuller Land and Property Ltd | Households | 2024 |
| Fullers Foods Holdings Limited | Professional & scientific | 2011 |
| Fullers Foods International Limited | Wholesale & retail | 1969 |
| Fullerton Group Limited | Administrative & support | 2025 |
| Fullertons Limited | Professional & scientific | 2008 |
| Fulltime Painter Ltd | Construction | 2024 |
| Fully Coded Limited | Information & communication | 2011 |
| Fulton Holdings (Leeds) Limited | Agriculture & fishing | 1996 |
| Fulton Incorporation Ltd | Wholesale & retail | 2021 |
| Fulton-Houseman Developments LLP | | 2020 |
| Fuminex Limited | Water & waste | 2005 |
| FUN Agency Limited | Professional & scientific | 2009 |
| FUN Factor Leeds Limited | Arts & recreation | 2015 |
| FUN Flavor Ltd | Wholesale & retail | 2024 |
| FUN Kart Products UK Limited | Administrative & support | 2007 |
| FUN Shack (UK) Ltd. | Administrative & support | 2008 |
| Funcho Ltd | Hospitality | 2025 |
| Function Beyond Limited | Professional & scientific | 2024 |
| Functional Ingredients Limited | Wholesale & retail | 2009 |
| Fundi Commercial Finance Limited | Financial services | 2022 |
| Funding 4 Futures C.I.C. | Education | 2019 |
| Funding Guru Limited | Professional & scientific | 2019 |
| Fundraising Innovations Limited | Administrative & support | 2002 |
| Funerals With Heart and Soul Leeds Ltd | Other services | 2018 |
| Fung Sang Limited | Hospitality | 2019 |
| Funky Futon Co Limited | Wholesale & retail | 2000 |
| Funky Sole Brothers Limited | Wholesale & retail | 2019 |
| Funky Sputnik Productions Limited | Arts & recreation | 2015 |
| Funkycares Limited | Health & social care | 2014 |
| Funkypedagogy Ltd | Education | 2024 |
| Funnymoneyverse Ltd | Information & communication | 2022 |
| Furbston Limited | Professional & scientific | 1998 |
| Furesidentials Ltd | Real estate | 2025 |
| Furiq Limited | Wholesale & retail | 2026 |
| Furlux Ltd | Wholesale & retail | 2025 |
| Furnell Estate Agencies Limited | Real estate | 2017 |
| Furnished Accommodation Ltd | Real estate | 2022 |
| Furniture 4 ALL Limited | Wholesale & retail | 2010 |
| Furniture Clearance Limited | Wholesale & retail | 2021 |
| Furniture Link Wholesale Ltd | Wholesale & retail | 2025 |
| Furniture Village ( Yorkshire) Ltd | Wholesale & retail | 2020 |
| Furo Media Ltd | Information & communication | 2024 |
| Furry Tail Groomers Limited | Other services | 2025 |
| Further Matters Ltd | Education | 2015 |
| Fuse Art Space | Administrative & support | 2013 |
| Fuse Services Limited | Manufacturing | 2009 |