| Forest Poultry Limited | Agriculture & fishing | 2013 |
| Forest Quest Ltd | Education | 2011 |
| Forest Tail Ltd | Agriculture & fishing | 2022 |
| Forest View (Calverton) Management Company Limited | Households | 2021 |
| Forestdene Properties Limited | Health & social care | 2003 |
| Forestglade Properties Limited | Real estate | 2003 |
| Forever Coffee Limited | Hospitality | 2025 |
| Forge House (Rufforth) Limited | Real estate | 2019 |
| Forge Lane (Tollerton) Management Company Limited | Households | 2019 |
| Forge Photography and Film Production Limited | Professional & scientific | 2017 |
| Forge Press Ltd. | Information & communication | 2024 |
| Form+ Ltd | Information & communication | 2021 |
| Forman Vehicle Services Limited | Manufacturing | 2001 |
| Formus Developments Ltd | Real estate | 2019 |
| Foro York Limited | Hospitality | 2026 |
| Forrester Property Ltd | Real estate | 2021 |
| Forresters Kilburn Ltd | Hospitality | 2024 |
| Forsdike Associates Limited | Professional & scientific | 2012 |
| Forsite Diagnostics Limited | Manufacturing | 2006 |
| Fortescue GEM (York) LLP | | 2024 |
| Fortis Safety Ltd | Wholesale & retail | 2025 |
| Fortitude Maritime Limited | Professional & scientific | 2022 |
| Fortress Health Limited | Wholesale & retail | 2017 |
| Fortuitous Four Limited | Administrative & support | 2020 |
| Fortuna Dental Ltd | Health & social care | 2023 |
| Fortuna SPV Limited | Real estate | 2023 |
| Fortune House Limited | Hospitality | 2019 |
| Fortune Lounge Ltd | Hospitality | 2026 |
| Fortune Peak Food Ltd | Manufacturing | 2024 |
| Fortus Audit LLP | | 2015 |
| Fortus Business Finance Limited | Professional & scientific | 2020 |
| Fortus G F LLP | | 2022 |
| Fortus Holdings Limited | Financial services | 2024 |
| Fortus Limited | Professional & scientific | 2019 |
| Fortus Tax Limited | Professional & scientific | 2023 |
| Fortus Wealth Management Limited | Professional & scientific | 2022 |
| Forward Horse Farriers Ltd | Other services | 2023 |
| Forwards York: Forwards Yorkshire CIC | Transport & logistics | 2025 |
| Forza Historic Holdings Ltd | Financial services | 2016 |
| Forza Historic Racing Ltd | Arts & recreation | 2016 |
| Forza Holdings Limited | Financial services | 2023 |
| Forza Performance Ltd | Wholesale & retail | 2024 |
| Foss Group Ltd | Construction | 2024 |
| Foss Mobile Solutions Limited | Information & communication | 2008 |
| Foss Motor Company Ltd | Wholesale & retail | 2015 |
| Foss View Land Owners Ltd | Real estate | 2016 |
| Foss View Management Two Ltd | Real estate | 2025 |
| Fossgate Social Limited | Hospitality | 2013 |
| Fosslands Farm Management Company Limited | Households | 1997 |
| Foster Mechanical & Fabrication Services Ltd | Manufacturing | 2019 |
| Fothersons Homes Limited | Real estate | 2026 |
| Founderx Capital Ltd | Financial services | 2025 |
| Founderx Group Limited | Professional & scientific | 2025 |
| Founderx Magazine Ltd | Information & communication | 2025 |
| Founderx Media Ltd | Professional & scientific | 2024 |
| Foundry Meadows (Bexhill) Residents Management Company Limited | Households | 2019 |
| Fountain Court (Boroughbridge) Limited | Households | 1990 |
| Fountain Developments Limited | Construction | 1983 |
| Fountain Droitwich Limited | Health & social care | 2012 |
| Fountain Estates Limited | Construction | 1984 |
| Fountain Homes Limited | Construction | 1985 |
| Fountain Thorne Road Ltd | Health & social care | 2007 |
| Fountains Advisory Services Ltd. | Professional & scientific | 2017 |
| Fountains Fell Limited | Professional & scientific | 2026 |
| Four Seasons Landscaping NY Ltd | Professional & scientific | 2021 |
| Fouracre Group Limited | Financial services | 2025 |
| Fouracre Holdings Limited | Agriculture & fishing | 2016 |
| Fouracre Leisure Limited | Hospitality | 2016 |
| Fouracre Parks Limited | Hospitality | 2019 |
| Fouracre Property Holdings Limited | Financial services | 2025 |
| Fourlet (York) Limited | Real estate | 2008 |
| Fournier Software Publishing Limited | Information & communication | 1998 |
| Fourth Chapter Developments Limited | Construction | 2022 |
| Fourth Chapter Limited | Professional & scientific | 2018 |
| Fourth Generation Solutions Limited | Information & communication | 1990 |
| Fourth Paradigm Consulting Ltd | Professional & scientific | 2014 |
| Fowler & Goodwin Ltd | Construction | 2018 |
| Fowler & Hoggard Limited | Construction | 2023 |
| Fowler Rose Limited | Information & communication | 2015 |
| Fowlers of York Ltd | Wholesale & retail | 2023 |
| FOX & Forest Ltd | Hospitality | 2025 |
| FOX & Frog Limited | Other services | 2019 |
| FOX Agronomy Limited | Agriculture & fishing | 2010 |
| FOX Covert Farms Holdings Limited | Agriculture & fishing | 2024 |
| FOX Estates SPV 1 Ltd | Real estate | 2026 |
| FOX Grosvenor Films Ltd | Information & communication | 2017 |
| FOX Group UK Estates Ltd | Real estate | 2025 |
| FOX Oak Holdings Ltd | Financial services | 2025 |
| FOX Red Consultants Limited | Professional & scientific | 2024 |
| Foxedge Limited | Manufacturing | 1997 |
| Foxes Chase (Anlaby) Residents Management Company Limited | Real estate | 2022 |
| Foxfields (Stoke-On-Trent) Management Company Limited | Households | 2021 |
| Foxglove Court (Management) Limited | Households | 1989 |
| Foxhill Eyecare Limited | Health & social care | 2018 |
| Foxley Park (Dereham) Residents Management Company Limited | Households | 2021 |
| Foxwell Easthurst Limited | Professional & scientific | 2023 |
| Foxwood Lane Flats Management Company Limited | Households | 2003 |
| Foxwood Properties Limited | Real estate | 1964 |
| Foxy Design Horseboxes Limited | Wholesale & retail | 2013 |
| FPV UK Ltd | Other services | 2016 |