| Fulham Football Club Limited | Arts & recreation | 1987 |
| Fulham Football Leisure Limited | Arts & recreation | 1997 |
| Fulham Pier Limited | Hospitality | 2023 |
| Fulham Stadium Limited | Arts & recreation | 1997 |
| Full Circle Capital Partners Ltd | Professional & scientific | 2024 |
| Full Cycle Bicycle Project CIC | Wholesale & retail | 2020 |
| FULL90 Ltd | Wholesale & retail | 2026 |
| Furniture Concept Ltd | Construction | 2003 |
| Future Care Group Ltd | Financial services | 2025 |
| Future Health Intelligence Ltd | Professional & scientific | 2024 |
| Försent London Limited | Wholesale & retail | 2025 |
| G & O Real Estate Limited | Real estate | 2006 |
| G & O Rents Limited | Real estate | 1990 |
| G & O Securities Limited | Real estate | 1994 |
| G S GAS Ltd | Construction | 2025 |
| G. Dhond Associates Limited | Health & social care | 1999 |
| G.A.Floors Ltd | Construction | 2020 |
| G.Anne Joy London Ltd | Manufacturing | 2024 |
| Gabriel Enright Ltd | Information & communication | 2025 |
| GAD London Ltd | Wholesale & retail | 2024 |
| GAD Management Ltd | Financial services | 2015 |
| GAF Services Ltd | Professional & scientific | 2021 |
| Gaffers and Light Ltd | Information & communication | 2020 |
| Gaiaguard Ltd | Wholesale & retail | 2025 |
| Galaxy Value Solutions Ltd | Wholesale & retail | 2016 |
| Gama Holdings Ltd | Real estate | 2018 |
| Gama RR Ltd | Real estate | 2023 |
| Gamaek Ltd | Hospitality | 2025 |
| Game Source Entertainment UK Limited | Information & communication | 2023 |
| Gammell Tools Ltd | Wholesale & retail | 2025 |
| Gammon Development Limited | Real estate | 2022 |
| Ganesha Estates Ltd | Real estate | 2024 |
| Ganev Express Ltd | Transport & logistics | 2018 |
| Gang-Nam Kitchen Ltd | Hospitality | 2023 |
| Ganh Ganh Limited | Construction | 2013 |
| Garfusconsult Limited | Professional & scientific | 2023 |
| Garmony Limited | Professional & scientific | 1995 |
| GAS Cert Pro Ltd | Construction | 2025 |
| Gaurdianx Security Limited | Administrative & support | 2026 |
| Gavian Ltd | Information & communication | 2018 |
| Gavin Kwok Ltd | Construction | 2021 |
| Gaya Business Solutions Ltd | Wholesale & retail | 2024 |
| Gayton Court Freehold Management (Blocks 1 & 2) Ltd | Real estate | 2018 |
| GBC Limited | Professional & scientific | 2026 |
| Gemelli Contracts Ltd | Administrative & support | 2017 |
| Gemelli Properties Limited | Real estate | 2015 |
| Generations (London) Limited | Real estate | 2022 |
| Genesis Global UK Limited | Other services | 2005 |
| Genesys Tech Ltd | Information & communication | 2021 |
| Genova Diagnostics Europe Ltd | Administrative & support | 2001 |
| Gentleman Prestige London Ltd | Manufacturing | 2026 |
| Gesch Consulting Limited | Professional & scientific | 2024 |
| GET Connected Electrical Contractors Ltd | Construction | 2010 |
| GET IT London Ltd | Wholesale & retail | 2022 |
| GFD Enterprises Limited | Wholesale & retail | 2008 |
| GFD Limited | Wholesale & retail | 2003 |
| GGM Express Limited | Wholesale & retail | 2019 |
| Ghostart Ltd | Information & communication | 2025 |
| GHP Surrey Limited | Construction | 2012 |
| GHR Catering Limited | Hospitality | 2012 |
| GHW Marketing Ltd | Professional & scientific | 2022 |
| GI Foods Supply Ltd | Wholesale & retail | 2023 |
| Giddiup Limited | Arts & recreation | 2019 |
| Gigaboss Building Limited | Construction | 2022 |
| Gina's Academy of Beauty Ltd | Wholesale & retail | 2022 |
| Gisel Services Ltd | Wholesale & retail | 2019 |
| Gita&Amit Ltd | Health & social care | 2025 |
| GJC Legal Ltd | Professional & scientific | 2026 |
| GK Solutions Group Ltd | Real estate | 2025 |
| Gk-K Group Ltd | Administrative & support | 2025 |
| GK4CB Limited | Information & communication | 2025 |
| Glaive Limited | Wholesale & retail | 1986 |
| Glamma City Retail Ltd | Wholesale & retail | 2023 |
| Glastec (UK) LLP | | 2010 |
| Glastec Windscreen Repairs Limited | Other services | 2007 |
| Glaze Accountants Ltd | Professional & scientific | 2024 |
| Gleaming Cleaning, Shine Ltd | Administrative & support | 2021 |
| Glendene Property Maintenance Limited | Households | 1966 |
| Glentamer Residents (New Malden) Limited | Households | 1999 |
| Glitz N Glam Limited | Other services | 2020 |
| Global Education Group (GB) Ltd | Extraterritorial | 2019 |
| Global M&J Limited | Health & social care | 2019 |
| Global Muslim Repatriation Services Ltd | Other services | 2026 |
| Global Recruitment Corp Limited | Administrative & support | 2022 |
| Global South Ltd | Manufacturing | 2017 |
| Global Tamil School | Education | 2023 |
| Global UK Property Limited | Real estate | 2014 |
| Globelink (UK) Limited | Information & communication | 2002 |
| Glory 27 Ltd | Wholesale & retail | 2026 |
| Glory Labs Ltd | Information & communication | 2023 |
| Glow LAB Boutique Ltd | Professional & scientific | 2025 |
| Gndtdigital Ltd | Information & communication | 2023 |
| Go Dent Laboratory Ltd | Manufacturing | 2023 |
| Go Driving Ltd | Education | 2022 |
| Go Greek Authentic Ltd | Hospitality | 2024 |
| Go Pro London Ltd | Transport & logistics | 2023 |
| Go to Ground Services Ltd | Construction | 2025 |
| Go With the FLO Ltd | Professional & scientific | 2021 |
| Gogi Box Ltd | Hospitality | 2015 |
| Gold Flute Global Ltd | Real estate | 2013 |