| Farcet Development Ltd | Real estate | 2026 |
| Fasttracks Services Limited | Wholesale & retail | 2016 |
| Fattoria Felicita Limited | Agriculture & fishing | 2019 |
| FCT Digital Ltd | Professional & scientific | 2022 |
| Fell Friends Limited | Households | 2024 |
| FEN Drayton Road Management Company Limited | Administrative & support | 2009 |
| Fenix Recruitment Ltd | Administrative & support | 2016 |
| Fenland Electrical Solutions Limited | Construction | 2010 |
| Fenland Machine Services Limited | Professional & scientific | 2022 |
| Fenland Mobile Tyres Ltd | Wholesale & retail | 2026 |
| Fennshaw Engineering Limited | Manufacturing | 2008 |
| Fenside Parks Limited | Real estate | 2018 |
| Fenton Real Estate Limited | Real estate | 2003 |
| Fenwinds Renovations & Extensions Limited | Construction | 2014 |
| FF Butchers Limited | Wholesale & retail | 2011 |
| FFA Compliance Ltd | Hospitality | 2024 |
| FFA Global Ltd | Financial services | 2024 |
| FFA Projects Ltd | Hospitality | 2024 |
| FFP New Media Limited | Information & communication | 2005 |
| Fibrenet Contracting Services Ltd | Information & communication | 2021 |
| Field END Flats Management Company Limited | Real estate | 2005 |
| Fighting Fit Performance Ltd | Arts & recreation | 2025 |
| Filbert Square Limited | Information & communication | 2021 |
| Fine Wooden Boats Ltd. | Manufacturing | 2012 |
| Firm Procurement & Surveying Ltd | Other services | 2023 |
| First Parallel North Limited | Other services | 2017 |
| FJR Projects Ltd | Professional & scientific | 2025 |
| Flaircross Properties Limited | Real estate | 1964 |
| Fletcher Solutions (UK) Limited | Professional & scientific | 2006 |
| Flexographic Engineering Limited | Professional & scientific | 2017 |
| Floods Inns Limited | Hospitality | 2013 |
| FLOORS2YOU Limited | Wholesale & retail | 2016 |
| FMS Engineering Limited | Professional & scientific | 2011 |
| Foildale Limited | Professional & scientific | 2000 |
| Food Factory Associates Ltd | Manufacturing | 2018 |
| Food Lifts Limited | Administrative & support | 2024 |
| Footforward Productions Limited | Arts & recreation | 2012 |
| Fordhams Roofing and Construction Limited | Construction | 2024 |
| Forensic Science Investigations Limited | Professional & scientific | 2006 |
| Forge Software Development Ltd | Information & communication | 2025 |
| Form Films Limited | Information & communication | 2019 |
| Forma Consultancy Limited | Professional & scientific | 2025 |
| Formare Ltd | Professional & scientific | 2023 |
| Formation Moulding and Casting Company Limited | Manufacturing | 2003 |
| Formula Recruitment Limited | Administrative & support | 2017 |
| Fosker Engineering LLP | | 2008 |
| Foundation Coffee Roasters Limited | Manufacturing | 2019 |
| Four Seasons Waterproofing Ltd | Construction | 2017 |
| FOX Partners Limited | Hospitality | 2011 |
| Foxton Group Ltd | Construction | 2026 |
| Fracture Building Consultancy Limited | Professional & scientific | 2022 |
| Fracture Systems Limited | Professional & scientific | 2000 |
| Fred Newman Building Services Ltd | Construction | 2021 |
| Free Spirits Publishing Ltd | Information & communication | 2019 |
| Freedom to Explore Ltd | Wholesale & retail | 2025 |
| Friars Cliff Properties Ltd. | Real estate | 1999 |
| Friends of Mandritsara Trust UK | Health & social care | 2001 |
| Frontfoot Consulting Ltd | Professional & scientific | 2012 |
| FSJ Property Ltd | Real estate | 2023 |
| FTS Commercial Ltd | Construction | 2022 |
| Fulfillable Limited | Transport & logistics | 2021 |
| Fuli Co. Ltd | Real estate | 2025 |
| Funanga Ltd | Professional & scientific | 2017 |
| Fusionedit Ltd | Hospitality | 2025 |
| Future Renewable Energy Limited | Manufacturing | 2008 |
| Future Version Limited | Professional & scientific | 2018 |
| G Force Trading Ltd | Wholesale & retail | 2023 |
| G Peacey & SON Plastering Ltd | Construction | 2014 |
| G.R.C Groundwork Limited | Construction | 2018 |
| Galactic Digital Agency Ltd | Arts & recreation | 2007 |
| Galaxy Carella Limited | Professional & scientific | 2002 |
| Galleon Glass Limited | Extraterritorial | 2014 |
| Gamestage Limited | Hospitality | 2025 |
| Garnet Consultancy Services Limited | Professional & scientific | 2021 |
| GAS Safe & Sound Limited | Other services | 2006 |
| Gauntdor Limited | Real estate | 2021 |
| GB & a Limited | Professional & scientific | 2012 |
| GC (ST Ives) Freehold Limited | Real estate | 2017 |
| Gekko Joinery and Construction Ltd | Manufacturing | 2023 |
| GEM Accountancy Ltd | Professional & scientific | 2019 |
| GEM Consultancy Ltd | Professional & scientific | 2022 |
| Gemma Todd Ltd | Other services | 2018 |
| General Consulting & Contracting Limited | Professional & scientific | 2012 |
| GEO Candles Ltd | Wholesale & retail | 2026 |
| George Baker Racing Epsom Ltd | Agriculture & fishing | 2024 |
| George Baker Racing LLP | | 2017 |
| George Lister Engineering Limited | Manufacturing | 2006 |
| Georgeandjack Ltd | Professional & scientific | 2023 |
| Ghost Orchid Press Ltd | Information & communication | 2020 |
| GHW Valuations Limited | Other services | 2026 |
| Gilbert Boys Ltd | Wholesale & retail | 2025 |
| Global Afro Foodies Ltd | Wholesale & retail | 2026 |
| Global Jamming CIC | Information & communication | 2023 |
| Global Resource Partners Ltd | Administrative & support | 2011 |
| Global Scanning UK Ltd | Manufacturing | 1989 |
| Gmdp Solutions Ltd | Health & social care | 2015 |
| GN Brickwork Ltd | Construction | 2022 |
| GN Property Ltd | Real estate | 2016 |
| Go Group UK Holdings Limited | Financial services | 2026 |
| Go Performance Rehab Limited | Health & social care | 2026 |