| Fusion Creations Limited | Construction | 2005 |
| Futura Consumer Healthcare Limited | Health & social care | 2014 |
| Futura Medical Developments Limited | Professional & scientific | 1997 |
| Futura Medical PLC | Health & social care | 2001 |
| Future Biogas Bidco Limited | Financial services | 2023 |
| Future Biogas Group Limited | Financial services | 2021 |
| Future Biogas Holdco Limited | Financial services | 2023 |
| Future Biogas Limited | Manufacturing | 2010 |
| Future Biogas Midco Limited | Financial services | 2023 |
| Future Biogas Systems Ltd | Manufacturing | 2015 |
| Future Homes (Surrey) Limited | Real estate | 2021 |
| Futureoptix Limited | Professional & scientific | 2017 |
| Fuud London Limited | Wholesale & retail | 2013 |
| FYSIO4HEALTH Ltd | Health & social care | 2014 |
| G & T Property Services LLP | | 2016 |
| G and Martins Limited | Construction | 2018 |
| G Fowler Ltd | Construction | 2017 |
| G L Hills Ltd | Professional & scientific | 2026 |
| G Park Management Company Limited | Real estate | 2009 |
| G Sawyer Ltd | Financial services | 2021 |
| G&J HOPE1 Ltd | Hospitality | 2023 |
| G&S Mech Ltd | Construction | 2022 |
| G&T Pelletti Limited | Real estate | 2011 |
| G.Network Holdings 2 Limited | Information & communication | 2026 |
| G.V.Dogot Limited | Construction | 2015 |
| G27 Property Investments Ltd. | Real estate | 2017 |
| Gable Court Residents Association Limited | Households | 1995 |
| Gable Homes Holdings Limited | Extraterritorial | 2011 |
| Gable Homes Investments Limited | Real estate | 2014 |
| Gable Homes Lettings Limited | Real estate | 2005 |
| Gable Homes Limited | Construction | 1999 |
| Gablecourt Limited | Construction | 1982 |
| Gables Estate Management Company Limited | Households | 2007 |
| Gabriel O.C. Limited | Real estate | 2026 |
| Gaea Company Ltd | Wholesale & retail | 2015 |
| GAG House Comedy Clubs Limited | Extraterritorial | 2024 |
| Gaia Integrated Systems Ltd | Information & communication | 2026 |
| Galassica Management Ltd | Real estate | 2024 |
| Galata Mezze Grill Ltd | Hospitality | 2024 |
| Galaxis Capital LLP | | 2007 |
| Galaxy Vehicle Service Ltd | Wholesale & retail | 2025 |
| Gallagher Brickwork & Building Services Ltd | Construction | 2016 |
| Gallagher Thorne Consulting Ltd | Professional & scientific | 2022 |
| GAM Property Limited | Real estate | 2018 |
| Gamber Consultants Limited | Construction | 2015 |
| Game-Worn Clothing Ltd | Manufacturing | 2013 |
| Gameplan Physiotherapy Ltd | Health & social care | 2024 |
| Gamified Fitness Ltd | Wholesale & retail | 2023 |
| GAP Distribution Limited | Extraterritorial | 2018 |
| Garden Creation & Landscaping Ltd | Administrative & support | 2019 |
| Garden Customs Ltd | Construction | 2020 |
| Garden Force (Surrey) Ltd. | Administrative & support | 2011 |
| Garden Pods Group Ltd | Construction | 2020 |
| Garden Restoration & Maintenance Limited | Administrative & support | 2020 |
| Gardening Help 4 YOU Ltd | Construction | 2022 |
| Garrick Consulting Engineers Limited | Professional & scientific | 2019 |
| GAS Tech LPG Limited | Energy | 2024 |
| Gascoignes Commercial Limited | Real estate | 2001 |
| Gascoignes Property Consultants Limited | Real estate | 2003 |
| Gaskin IT Solutions Limited | Information & communication | 2024 |
| Gasp Motor Project | Education | 2009 |
| Gate Street Farm Limited | Other services | 2013 |
| Gatehouse Recruitment Services Limited | Administrative & support | 2013 |
| Gateways Healthcare Professional Ltd | Administrative & support | 2023 |
| Gatwick Car Rentals.Com Limited | Administrative & support | 2000 |
| Gatwick Tyre Co Limited | Wholesale & retail | 1997 |
| Gaudeo Limited | Professional & scientific | 2019 |
| Gayfere Ltd | Real estate | 2012 |
| Gazza Limited | Arts & recreation | 1976 |
| Gbct Consulting Ltd | Financial services | 2024 |
| Gbitech Limited | Professional & scientific | 2018 |
| GBP Invest 1 LP | | 2021 |
| GC Decorating Services Ltd | Construction | 2023 |
| GC Factoring Limited | Financial services | 2012 |
| GC Mavel Ltd | Professional & scientific | 2018 |
| GC4 Logistics Ltd | Transport & logistics | 2023 |
| GCF Management Limited | Administrative & support | 2004 |
| Gcls Site Services Ltd | Professional & scientific | 2026 |
| GDC Security Limited | Administrative & support | 2014 |
| Gedankenwelt Ltd | Information & communication | 2021 |
| Geewang Banstead Sushi Ltd | Wholesale & retail | 2023 |
| GEM Licensing Ltd | Information & communication | 2009 |
| Gemba Advantage Ltd | Information & communication | 2018 |
| Gemini 360 Limited | Real estate | 2023 |
| Gemini Packaging Limited | Administrative & support | 2000 |
| Gems Tiney Home Nursery Limited | Health & social care | 2025 |
| Gemsbok Consulting Limited | Professional & scientific | 2017 |
| Generative Group Ltd | Information & communication | 2024 |
| Generator Creative Consultants Limited | Professional & scientific | 1997 |
| Genie Hairdressing Ltd | Other services | 2023 |
| Genus Technology Ltd | Information & communication | 2023 |
| GEO Language Services Ltd | Professional & scientific | 2006 |
| GEO Mitchell Ltd | Arts & recreation | 2016 |
| Geo-Field Consultants Ltd | Professional & scientific | 2014 |
| Geoperforma Ltd | Information & communication | 2017 |
| Geoprovider Processing Ltd | Mining & quarrying | 2019 |
| George Augsburger Limited | Construction | 2013 |
| George Henry Chapman Consultancy Limited | Information & communication | 2011 |
| George Lambert & SON Limited | Transport & logistics | 1964 |
| George Mitchell Fit Ltd | Arts & recreation | 2021 |