| G. S. Amar Limited | Wholesale & retail | 1999 |
| G.S. Development Services Ltd | Construction | 2003 |
| Gabi House Decor Limited | Construction | 2025 |
| GAG Transport Limited | Transport & logistics | 2023 |
| GAM Financial Services Holdings Limited | Financial services | 2015 |
| GAM Financial Services Limited | Financial services | 2015 |
| Gamestorm.Ai Ltd | Information & communication | 2024 |
| Gannon Marketing Ltd | Professional & scientific | 2024 |
| GAR Homes Ltd | Real estate | 2025 |
| Garage EP3 Limited | Wholesale & retail | 2019 |
| Garden Homes Express.Com Ltd | Other services | 2025 |
| Gardsbros Group Limited | Manufacturing | 2021 |
| Garrett C SOT Limited | Wholesale & retail | 2000 |
| Garuda Connect Ltd | Professional & scientific | 2022 |
| Garvey Health Limited | Health & social care | 2016 |
| Gary Jason Winwood Ltd | Extraterritorial | 2022 |
| Gate Builders & Plumbers Merchants Ltd | Construction | 2015 |
| Gavriel Holdings Limited | Hospitality | 2013 |
| GB Booze Ltd | Wholesale & retail | 2026 |
| GB Commerce and Consultance Ltd | Wholesale & retail | 2023 |
| GB Home Safe Ltd | Construction | 2024 |
| GB Vehicle Security Ltd | Wholesale & retail | 2021 |
| GB1 Express Ltd | Transport & logistics | 2019 |
| GBC Transport Limited | Transport & logistics | 2017 |
| GBD Couriers Ltd | Transport & logistics | 2015 |
| GC Fashion House Ltd | Wholesale & retail | 2015 |
| Gdgill Construction Ltd | Construction | 2024 |
| GE2 Ltd | Real estate | 1972 |
| Gearbox Central Ltd | Wholesale & retail | 2017 |
| Geddes S Limited | Wholesale & retail | 2018 |
| Gekko Labels Ltd | Administrative & support | 2026 |
| Geldbach (UK) Limited | Wholesale & retail | 2006 |
| GEM Blinds Ltd | Manufacturing | 2010 |
| Gemstar Holdings Limited | Professional & scientific | 2007 |
| Generation (UK) Limited | Administrative & support | 1978 |
| Generation Holdings Limited | Professional & scientific | 2004 |
| Generational Wealth Studio Limited | Manufacturing | 2023 |
| Genisys Group Ltd | Real estate | 2022 |
| Genisys Limited | Information & communication | 2008 |
| Geoff High Limited | Wholesale & retail | 2019 |
| Geoinfology Ltd | Information & communication | 2024 |
| George Baker Limited | Wholesale & retail | 1990 |
| George Engineering Limited | Manufacturing | 2005 |
| GET Your Mind Outside Ltd | Health & social care | 2025 |
| GET Your Steel Ltd | Wholesale & retail | 2020 |
| GFF Financial Ltd | Professional & scientific | 2016 |
| GFL77 Ltd | Transport & logistics | 2019 |
| GGR Logistics Ltd | Transport & logistics | 2025 |
| GGS Building Contractors Ltd | Construction | 2025 |
| GGS Trends Limited | Wholesale & retail | 2017 |
| GGSHOPPING4HOME Ltd | Wholesale & retail | 2023 |
| Ghar Masala Ltd | Hospitality | 2025 |
| GHK Health Ltd | Health & social care | 2024 |
| Gibbs a Limited | Wholesale & retail | 2017 |
| Gibbs Legacy Limited | Real estate | 2021 |
| Gidis Services Ltd | Construction | 2024 |
| Gifted Medics Ltd | Health & social care | 2024 |
| Gill & Family Ltd | Information & communication | 2018 |
| Gill Courier Services Ltd | Transport & logistics | 2025 |
| Gill Freight Limited | Transport & logistics | 2020 |
| Gill Freight Transport Limited | Transport & logistics | 2010 |
| Gill Glazing & Home Improvement Ltd | Construction | 2026 |
| Gill Heating & GAS Ltd | Professional & scientific | 2026 |
| Gill Homes Construction Limited | Construction | 2025 |
| Gill Properties Estate Ltd | Real estate | 2022 |
| Gill Travel Limited | Administrative & support | 2026 |
| Gill Upvc and Doors Ltd | Manufacturing | 2024 |
| Gills Interiors UK Ltd | Construction | 2024 |
| Ginjah's Kitchen Limited | Hospitality | 2023 |
| GJ Residential Properties Ltd | Real estate | 2021 |
| GJ Star Ltd | Real estate | 2026 |
| GK Construction Midlands Ltd | Construction | 2022 |
| GK Consultancy U.K. Ltd | Professional & scientific | 2024 |
| GKR Lines Ltd | Transport & logistics | 2023 |
| Glam Clean Ltd | Administrative & support | 2024 |
| Glam Mart Ltd | Wholesale & retail | 2026 |
| Glass Divide Holdings Ltd | Financial services | 2026 |
| Glass Divide Ltd | Construction | 2020 |
| Glcp Limited | Real estate | 2023 |
| Glendale Architectural Metalwork (UK) Ltd | Manufacturing | 2012 |
| Glennview Properties Ltd | Real estate | 2023 |
| Glentworth Formulations Limited | Wholesale & retail | 2018 |
| Gliczar Ltd | Transport & logistics | 2016 |
| Global Business Growth Ltd | Professional & scientific | 2017 |
| Global Construction Development Ltd | Construction | 2025 |
| Global Manufacturing Consultants Ltd | Professional & scientific | 2022 |
| Global Recovery Services Ltd | Transport & logistics | 2026 |
| Global Vault Ltd | Wholesale & retail | 2024 |
| Globaldealsmarket Limited | Wholesale & retail | 2025 |
| Gloried Services C.I.C. | Administrative & support | 2025 |
| Glow Hair&Beauty Salon Limited | Other services | 2024 |
| Glowbylore Ltd | Wholesale & retail | 2025 |
| Gmarabs Ltd | Wholesale & retail | 2025 |
| GND Convenience Stores Ltd | Wholesale & retail | 2023 |
| Gnievko Transport Ltd | Transport & logistics | 2023 |
| GNR (UK) Ltd | Wholesale & retail | 2013 |
| Go Go Properties Ltd | Real estate | 2023 |
| Gogna Schoolwear & Sports Limited | Manufacturing | 2006 |
| Gold Direct 4U Ltd | Mining & quarrying | 2023 |
| Goldcat Communications Ltd | Professional & scientific | 2019 |