| Foundry Court (Management) Limited | Real estate | 1998 |
| FOX Brothers Building Ltd | Construction | 2021 |
| FPH 2017 Ltd | Financial services | 2017 |
| Frandila Consulting LLP | | 2016 |
| Frandila Limited | Financial services | 2002 |
| Frankeats Limited | Real estate | 2025 |
| Frankie's Property Management Limited | Real estate | 2019 |
| Frankland Mews Residents Management Company Ltd | Real estate | 2015 |
| Fred Cuts Ltd | Other services | 2023 |
| Freedom Assessors Limited | Other services | 2020 |
| Freeman Brear Architects LLP | | 2015 |
| Fresh Produce Consultancy Limited | Agriculture & fishing | 2002 |
| Fresh Studios Ltd | Arts & recreation | 2019 |
| Friargate Coventry LLP | | 2009 |
| Friargate Coventry Management Company Limited | Real estate | 2014 |
| Friars 716 Limited | Professional & scientific | 2016 |
| Fridge Door Doodles Ltd | Arts & recreation | 2022 |
| Friends of Jesus Christ Ltd | Information & communication | 2017 |
| Friesian Horse Association of Great Britain and Ireland Limited | Other services | 1995 |
| FTR Suspension Ltd | Wholesale & retail | 2021 |
| Fullflow Group Limited | Construction | 1996 |
| Fullflow Holdings Limited | Construction | 2009 |
| Fullflow International Holdings Ltd | Financial services | 2019 |
| Fullflow International Limited | Construction | 2009 |
| Fullflow Systems Ltd | Construction | 2002 |
| Fullyfittedbathrooms Limited | Construction | 2003 |
| Funkii Ltd | Wholesale & retail | 2024 |
| Funomenal Ltd | Wholesale & retail | 2022 |
| Furnace Plumbing & Heating Services Ltd | Construction | 2020 |
| Future Home Comforts Limited | Construction | 2024 |
| Future Home Services Ltd | Construction | 2026 |
| Future Protect Solutions Limited | Professional & scientific | 2024 |
| Future Sustainability Ltd | Professional & scientific | 2008 |
| Fwd-Av Ltd | Information & communication | 2025 |
| Fwd-Ip Ltd | Construction | 2005 |
| FX Magic Ltd | Information & communication | 2025 |
| Fyfe AL Limited | Real estate | 2023 |
| FYI Trading Ltd | Wholesale & retail | 2023 |
| Fyotto Ltd | Manufacturing | 2018 |
| G Clean Limited | Administrative & support | 2015 |
| G J Amory Brickwork Ltd. | Construction | 2011 |
| G J Isaacson Cladding Limited | Construction | 2002 |
| G J Software Solutions Limited | Information & communication | 2012 |
| G P Validation Limited | Manufacturing | 2008 |
| G S Shropshire Holdings Limited | Professional & scientific | 1994 |
| G Webber UK Limited | Administrative & support | 2013 |
| G'S Chilled Convenience Foods Limited | Agriculture & fishing | 2016 |
| G'S Fresh Beetroot Limited | Agriculture & fishing | 1991 |
| G'S Fresh Mushrooms Limited | Manufacturing | 2003 |
| G'S Fresh Prepared Limited | Agriculture & fishing | 2011 |
| G'S Fresh Services Limited | Agriculture & fishing | 2012 |
| G'S Fresh Vegetables Limited | Agriculture & fishing | 2014 |
| G'S Group Holdings Limited | Financial services | 2021 |
| G'S Growers (Ramsey) Limited | Agriculture & fishing | 1990 |
| G'S Growers Mushrooms Limited | Manufacturing | 2016 |
| G'S Growers Salads Limited | Agriculture & fishing | 2016 |
| G'S Marketing Limited | Agriculture & fishing | 1958 |
| G'S Spain Holdings Limited | Financial services | 1984 |
| G.B. Innomech Limited | Professional & scientific | 1990 |
| G.L. Pharma UK Limited | Wholesale & retail | 2019 |
| G.N.D. Properties Limited | Construction | 1971 |
| G.S. Shropshire & Sons Limited | Agriculture & fishing | 1958 |
| G4 MPS Limited | Manufacturing | 2004 |
| G6S Limited | Wholesale & retail | 2009 |
| Gables (Dovercourt) Limited(The) | Households | 1980 |
| Game Changer Talent Ltd | Administrative & support | 2019 |
| Game LET Limited | Real estate | 2005 |
| Garden Court Garages Limited | Construction | 1963 |
| Gary Cleaning Services Limited | Administrative & support | 2017 |
| Gary Johns Architects Limited | Professional & scientific | 2009 |
| Gasjen Ltd | Other services | 2020 |
| Gaskin Parks Ltd | Hospitality | 2016 |
| Gayton Farm Buildings Limited | Construction | 2008 |
| Gayton Investments Limited | Construction | 2020 |
| GB Mentors Ltd | Information & communication | 2021 |
| GC Bake Shop Ltd | Wholesale & retail | 2020 |
| GCH Celery & Organics Ltd | Agriculture & fishing | 2024 |
| GCH Farms Holdings Limited | Financial services | 2014 |
| GCH Growers Limited | Agriculture & fishing | 2011 |
| GCH Mushrooms Limited | Financial services | 2013 |
| GCH Prop Limited | Agriculture & fishing | 2024 |
| GCH Salads Limited | Agriculture & fishing | 2026 |
| Geekworks Ltd | Manufacturing | 2024 |
| Gefion Limited | Professional & scientific | 2013 |
| Gelato Parlour Limited | Hospitality | 2019 |
| Gem-X Interpreting Ltd | Professional & scientific | 2024 |
| Gemms Ltd. | Wholesale & retail | 2005 |
| Gencies Limited | Wholesale & retail | 2013 |
| Geodesic AI Ltd | Information & communication | 2024 |
| Geoff Spurr & Co. Ltd | Professional & scientific | 2011 |
| George JAX Limited | Administrative & support | 2024 |
| George Laurel Ltd | Professional & scientific | 2005 |
| George Mckenzie Limited | Professional & scientific | 2012 |
| Gesture Limited | Information & communication | 2014 |
| Getranko Ltd | Real estate | 2025 |
| Ghalia Car Parts Ltd | Wholesale & retail | 2018 |
| Gibbonix Limited | Information & communication | 2022 |
| Gibbs of ELY Limited | Wholesale & retail | 1978 |
| Gibbs of Peterborough Holdings | Wholesale & retail | 1950 |
| Gibbs of Wisbech | Real estate | 1950 |