| FSO Holding LLC Ltd | Professional & scientific | 2022 |
| FSO Ventures Ltd | Professional & scientific | 2022 |
| FSR Project Services LLP | | 2018 |
| FTW Land Consultant Ltd | Real estate | 2004 |
| FTW Ltd | Administrative & support | 2013 |
| FU Wing Foods Limited | Hospitality | 2023 |
| FULLCARE24 Ltd | Health & social care | 2013 |
| Functional Health Limited | Extraterritorial | 2014 |
| Funkbox Ltd | Information & communication | 2010 |
| Funkbox Wedding DJS Limited | Information & communication | 2014 |
| Funkee Fellas Ltd | Wholesale & retail | 2024 |
| Furnea Properties Ltd | Real estate | 2021 |
| Furness Property Management Ltd | Real estate | 2025 |
| Furri Ltd | Wholesale & retail | 2019 |
| Future Door Steps Ltd | Other services | 2020 |
| Future Marketing Limited | Manufacturing | 2017 |
| Future TEN Ltd | Information & communication | 2019 |
| Futurenergaik Ltd | Other services | 2025 |
| Futurenergsentient Ltd | Other services | 2025 |
| Futurenergsystems Ltd | Other services | 2023 |
| Futurenergyai Ltd | Other services | 2025 |
| Futurespath-Solutions Limited | Information & communication | 2016 |
| Futuri Limited | Information & communication | 2000 |
| FYZ Investments Ltd | Real estate | 2021 |
| FYZ Limited | Wholesale & retail | 2012 |
| G & C Consulting London Limited | Professional & scientific | 2020 |
| G & J Locks Ltd | Other services | 2020 |
| G & R Property Solutions Limited | Real estate | 2025 |
| G 2 SERV1CES Ltd | Financial services | 2020 |
| G Brown Building & Electrical Services Ltd | Construction | 2008 |
| G Costumes Limited | Manufacturing | 2012 |
| G J Dennis Limited | Wholesale & retail | 2002 |
| G J Supplies Ltd | Construction | 2022 |
| G Joinery Ltd | Construction | 2021 |
| G Lancaster Services Ltd | Wholesale & retail | 2022 |
| G R Toot Investments Ltd | Real estate | 2025 |
| G Teeth Limited | Health & social care | 2018 |
| G&G Property Developers Ltd | Real estate | 2026 |
| G&I Interior Ltd | Construction | 2025 |
| G&S Builder Limited | Construction | 2020 |
| G&S Lifts Ltd | Manufacturing | 2025 |
| G.D Bartlett Properties Limited | Real estate | 2025 |
| G.E Fire Ltd | Administrative & support | 2025 |
| G.I.Barnett & SON Limited | Information & communication | 1954 |
| G.R & Co Properties Limited | Real estate | 2025 |
| G4 GAS Ltd | Construction | 2024 |
| G4MEAT Ltd | Wholesale & retail | 2012 |
| Gabriel Joinery Ltd | Manufacturing | 2019 |
| Gadgets Clinic Hornchurch Ltd | Wholesale & retail | 2022 |
| Galeforce Limited | Hospitality | 1998 |
| Gallagher Events Limited | Arts & recreation | 2019 |
| Gallagher Market Fresh Limited | Wholesale & retail | 2015 |
| Gallagher Property Management Limited | Real estate | 2023 |
| Ganlax Properties Limited | Real estate | 2017 |
| Garden Control Ltd | Professional & scientific | 2020 |
| Garden Room Hair Limited | Other services | 2018 |
| Garry D Investments Limited | Real estate | 2017 |
| GAS Boiler & Heating Services Ltd | Other services | 2013 |
| GAS Force Cover Plans Ltd | Manufacturing | 2016 |
| GAS Force Limited | Manufacturing | 2013 |
| Gastech 2000 Ltd | Manufacturing | 1998 |
| Gasvolt UK Ltd | Construction | 2023 |
| Gateway Outreach Care Services Ltd | Health & social care | 2018 |
| Gautam Investments Limited | Real estate | 2016 |
| Gavin Sheridan Hair Limited | Other services | 2023 |
| Gbadero Estates Limited | Real estate | 2025 |
| GCA Consultancy Services Ltd | Information & communication | 2009 |
| Gelmenler Limited | Hospitality | 2014 |
| Gelstone Property Limited | Real estate | 2025 |
| GEM Educational Consultant UK Ltd | Administrative & support | 2016 |
| GEM UK Properties Ltd | Real estate | 2024 |
| Gemini London Markets Ltd | Extraterritorial | 2015 |
| GEN Z Properties Limited | Real estate | 2023 |
| General & Commercial Limited | Real estate | 2019 |
| General Supplies (Romford) Limited | Wholesale & retail | 2011 |
| Genetics Health Care (PVT) Limited | Wholesale & retail | 2024 |
| Genetics Pharmaceuticals PVT Limited | Wholesale & retail | 2026 |
| Genmar (UK) Limited | Information & communication | 1996 |
| Gentlemen’S ROW Barbers Ltd | Other services | 2023 |
| Genus Networks Ltd | Information & communication | 2023 |
| GEO Tax Solutions Limited | Professional & scientific | 2020 |
| Georet Limited | Transport & logistics | 2019 |
| George A.Blake(Brentwood)Limited | | 1943 |
| George Benson Limited | Administrative & support | 1994 |
| George White Estates Limited | Real estate | 2022 |
| Georgie Porgy's Pre-School Ltd | Health & social care | 2011 |
| Gesas-Ambition Limited | Construction | 2014 |
| GET Doug in Ltd | Construction | 2016 |
| Getpro Limited | Administrative & support | 2023 |
| Getprofessional Ltd | Transport & logistics | 2025 |
| GG Investments Limited | Real estate | 2015 |
| Gginv Holdings Ltd | Real estate | 2017 |
| GH Refurbishment Ltd | Construction | 2025 |
| Ghatora Limited | Professional & scientific | 2015 |
| Ghostarm Ltd | Professional & scientific | 2014 |
| GI7 Construction Ltd | Construction | 2013 |
| Giacomo Ltd | Hospitality | 2009 |
| Giarenis Medical Services Limited | Health & social care | 2020 |
| Gibson Thermal Insulation Ltd | Construction | 2022 |
| Giecos Solution Ltd | Wholesale & retail | 2025 |