| FOX Inn Events (Hallaton) Ltd | Hospitality | 2020 |
| FOX PAD Lettings Ltd | Real estate | 2026 |
| FOX Projects Limited | Construction | 1983 |
| Foxton Boats Limited | Hospitality | 2018 |
| Foxton Construction Limited | Construction | 2019 |
| Foxton Developments Ltd | Construction | 2026 |
| Foxton Equestrian Centre Limited | Arts & recreation | 2021 |
| Foxton Falconry Limited | Agriculture & fishing | 2013 |
| Foxton Inclined Plane Trust(The) | Arts & recreation | 1982 |
| Foza Desserts Ltd | Hospitality | 2015 |
| FP Executive Recruitment Limited | Administrative & support | 2018 |
| Fractional Collective Ltd | Professional & scientific | 2026 |
| Fran Dalziel Garden Design Limited | Professional & scientific | 2023 |
| Frances of London Ltd | Wholesale & retail | 2024 |
| Frances Quinn Limited | Professional & scientific | 2013 |
| Francis TOD Electrical Limited | Construction | 2012 |
| Fraser Coaching & Consulting Ltd | Financial services | 2008 |
| Freedom Support Solutions Ltd | Health & social care | 2011 |
| Freedom Support Training Academy Ltd | Health & social care | 2017 |
| Freeman & Co. (Accountants) Limited | Professional & scientific | 2003 |
| Freer Rural Limited | Professional & scientific | 2023 |
| Frentyre Limited | Real estate | 1977 |
| Fresh LOO Limited | Manufacturing | 2021 |
| Fresh-I Limited | Professional & scientific | 2020 |
| Friars Airfield Solutions Limited | Transport & logistics | 2004 |
| Friars Property Management Ltd | Real estate | 2025 |
| Frimpeks Limited | Manufacturing | 2015 |
| Fringe Hairdressing Ltd | Other services | 2010 |
| Frisby Water Park Limited | Real estate | 1971 |
| FSG Design Limited | Professional & scientific | 2001 |
| Fssi (UK) Limited | Professional & scientific | 2006 |
| Fssi Consultancy Services Limited | Professional & scientific | 2007 |
| Fssi Group (UK) Ltd. | Professional & scientific | 2011 |
| Fssia Limited | Professional & scientific | 2022 |
| Full Circle Brand Consulting Ltd | Other services | 2023 |
| Furstenbrunn Ltd | Manufacturing | 2005 |
| Fusiongtm Ltd | Professional & scientific | 2025 |
| Future Creation Associates Ltd | Health & social care | 2015 |
| Future Foodies Education Ltd | Health & social care | 2026 |
| Future Trails Ltd | Education | 2024 |
| Future Work Consortium Ltd | Administrative & support | 2014 |
| G & B Wade Property Limited | Real estate | 2025 |
| G C Field & Sons (Farming) Limited | Agriculture & fishing | 2022 |
| G Touring Limited | Administrative & support | 2003 |
| G Touring Transport Limited | Administrative & support | 2017 |
| G Wort Properties Limited | Real estate | 2010 |
| G&S Property Solutions Ltd | Real estate | 2025 |
| G.O.A.T Live Events Ltd | Administrative & support | 2020 |
| G2BIZ Ltd | Information & communication | 2009 |
| G3T Ltd | Other services | 2017 |
| GA Smith Building Contractors Ltd | Construction | 2023 |
| Gaiah Consulting Ltd | Professional & scientific | 2026 |
| Galvanized Limited | Professional & scientific | 2012 |
| Gaming UK Limited | Arts & recreation | 2008 |
| Gardner Fencing Limited | Construction | 2018 |
| Garrison Locks Ltd | Administrative & support | 2009 |
| GATE8 Limited | Education | 2026 |
| Gavin Taylor Engineering Limited | Construction | 2012 |
| Gazam Productions Ltd | Real estate | 2020 |
| Gazelle Services Limited | Professional & scientific | 2023 |
| Gbfa Limited | Manufacturing | 2023 |
| GBT Farming Ltd | Agriculture & fishing | 2021 |
| GC Field & Sons (Feltwell Estate) Limited | Wholesale & retail | 2013 |
| GC Field & Sons Limited | Agriculture & fishing | 2021 |
| GE Civil Engineering Limited | Construction | 2020 |
| GE Farm Limited | Agriculture & fishing | 2022 |
| Genesis Clothes Limited | Wholesale & retail | 2005 |
| Geodesic Consultancy Limited | Information & communication | 2010 |
| George Orton, Sons & Spooner Ltd | Extraterritorial | 2014 |
| George Soden Consultancy Limited | Professional & scientific | 2023 |
| GEP Electrical Ltd | Construction | 2015 |
| Gerry's Club Limited | Hospitality | 1972 |
| GET UP Media Limited | Information & communication | 2014 |
| Gibson-Daw Professional Cleaning Services Ltd. | Administrative & support | 2007 |
| Gibson-Daw Properties Ltd | Real estate | 2022 |
| Gidore Ltd | Wholesale & retail | 2010 |
| Gigondas Limited | Real estate | 2021 |
| Gilding's Limited | Administrative & support | 2004 |
| Giles Point Limited | Wholesale & retail | 2017 |
| Gill Burt Associates Ltd | Professional & scientific | 2004 |
| Gillies & Wilson Limited | Construction | 2003 |
| Gingebee Ltd | Wholesale & retail | 2012 |
| Ginger FOX Transformation and Consulting Limited | Professional & scientific | 2026 |
| Ginger Kate Ltd | Wholesale & retail | 2016 |
| Ginger Travel Ltd | Administrative & support | 2024 |
| Ginger Whippet Films Ltd | Information & communication | 2019 |
| Gkds Electrical Limited | Construction | 2022 |
| Gkmkh Limited | Hospitality | 2020 |
| Gladius Education Ltd | Professional & scientific | 2025 |
| Gladstone Heating Ltd | Construction | 2024 |
| Glason Estates Limited | Real estate | 2021 |
| Glebe View Management Company Ltd | Households | 2019 |
| Glenmere Timber Company Limited | Wholesale & retail | 1973 |
| Glenmere Timber Holding Co Limited | Administrative & support | 2021 |
| Global Accessibility Associates CIC | Arts & recreation | 2022 |
| GLOBE2 Limited | Information & communication | 2008 |
| Globetrot Notions Ltd | Administrative & support | 2025 |
| GLS Scientific Services Limited | Professional & scientific | 2011 |
| GM Locksmiths Limited | Extraterritorial | 2018 |
| GMS Polymer Engineering Limited | Manufacturing | 2004 |