| GC SPV 2 Limited | Financial services | 2024 |
| GCL Group Holdings Limited | Financial services | 2017 |
| GCL Logistics Limited | Transport & logistics | 2007 |
| GCP Compass Limited | Education | 2020 |
| GCS Classic Private Hire Ltd | Transport & logistics | 2018 |
| GD SET Services Ltd | Construction | 2024 |
| GDC Lettings Limited | Real estate | 2020 |
| GDK Consultancy Limited | Professional & scientific | 2021 |
| GE Energy Solutions Ltd | Construction | 2025 |
| Geeresh Ltd | Real estate | 2025 |
| GEM Consulting and Advisory Ltd | Professional & scientific | 2022 |
| Gemily Consulting Ltd | Information & communication | 2017 |
| Gemini Grounds & Gardens Ltd | Administrative & support | 2011 |
| Gemini Grounds Maintenance Ltd | Extraterritorial | 2011 |
| Gemini MSE Limited | Professional & scientific | 2026 |
| Gemini Tech Ltd | Wholesale & retail | 2019 |
| Gemma Whelan Limited | Arts & recreation | 2017 |
| Gemspire Ltd | Wholesale & retail | 2025 |
| Genesis IT Solutions Ltd | Information & communication | 2023 |
| Gentleman's Carriage Service Limited | Extraterritorial | 2017 |
| Genyz Capital Limited | Real estate | 2020 |
| Genyz Transport Solutions Limited | Professional & scientific | 2009 |
| Geomo Limited | Real estate | 2024 |
| George Blake Limited | Administrative & support | 2016 |
| George Campbell Limited | Administrative & support | 2002 |
| George James Enterprise Ltd | Wholesale & retail | 2025 |
| Geotechreading Ltd | Wholesale & retail | 2019 |
| GET Riders UK Ltd | Wholesale & retail | 2024 |
| Gfrs Developments Limited | Construction | 2019 |
| GG Fit Limited | Professional & scientific | 2008 |
| GG Renovations Limited | Construction | 2024 |
| Ghulam Sughran Limited | Professional & scientific | 2016 |
| Giandes Ltd | Information & communication | 2021 |
| Gibbs Property Maintenance Ltd | Construction | 2020 |
| Gibbs Software Ltd | Information & communication | 2015 |
| Giftology Wokingham Ltd | Wholesale & retail | 2020 |
| GIG Retail Holdings Limited | Financial services | 2020 |
| GIG24 Ltd | Hospitality | 2024 |
| Giggle & Hoot PIE Company Ltd | Manufacturing | 2025 |
| Gilded Maple Interiors Ltd | Wholesale & retail | 2024 |
| Gill & Co. Properties Limited | Real estate | 1994 |
| Gillespie Thompson Limited | Real estate | 2019 |
| Ginger Bars Limited | Hospitality | 2014 |
| Ginger Wingman Limited | Hospitality | 2025 |
| Gingerbeard Limited | Information & communication | 2002 |
| Gingerdust Ltd | Administrative & support | 2016 |
| Gipsy Lane Management Company Limited | Households | 2001 |
| Gize Limited | Professional & scientific | 2013 |
| GK Gaia Limited | Real estate | 2021 |
| GK Taxi Services Limited | Transport & logistics | 2025 |
| GL Flowers Ltd | Wholesale & retail | 2019 |
| GL Golf Ltd | Professional & scientific | 2019 |
| Glad Homes Ltd | Real estate | 2018 |
| Gladridge Flats Limited | Households | 1961 |
| Glamping Hotel Limited | Hospitality | 2025 |
| Glanteifion Residents Management Limited | Households | 1988 |
| Glasal Films Limited | Information & communication | 2017 |
| Glasshouse Collective Ltd | Wholesale & retail | 2025 |
| Glebelands (UK) Limited | Real estate | 1993 |
| Gliese Consultancy Ltd | Information & communication | 2010 |
| Global Accent Consultants Ltd | Professional & scientific | 2014 |
| Global Consulting Enterprises Ltd | Real estate | 2023 |
| Global Data Financing Ltd | Financial services | 2021 |
| Global Data Solutions Ltd | Information & communication | 2007 |
| Global Degrees UK PVT Limited | Professional & scientific | 2022 |
| Global Event Technology Holdings Ltd | Financial services | 2023 |
| Global Event Technology Ltd | Information & communication | 2015 |
| Global Events Consulting LLP | | 2025 |
| Global Executive Cars Limited | Transport & logistics | 2017 |
| Global Film Skills Limited | Education | 2023 |
| Global Mediation Services Ltd | Professional & scientific | 2017 |
| Global Medtech Network Ltd | Wholesale & retail | 2025 |
| Global Sustainable Futures Network CIC | Professional & scientific | 2023 |
| Global Tribe Media (Phantom) Limited | Information & communication | 2024 |
| Globar Limited | Professional & scientific | 2014 |
| Gloria Business Ltd | Wholesale & retail | 2025 |
| Glover Property Group Ltd | Real estate | 2023 |
| Glow Electrical Solutions Ltd | Construction | 2019 |
| Glucksweg Ltd | Wholesale & retail | 2024 |
| Glys Solutions Limited | Professional & scientific | 2025 |
| GM Fredericks Ltd | Administrative & support | 2025 |
| GM Rusin Limited | Construction | 2017 |
| GMT 1947 Ltd. | Professional & scientific | 2014 |
| GNL Brothers LLP | | 2025 |
| Go Supply Chain Consulting Limited | Professional & scientific | 2013 |
| Gocar Traders Ltd | Wholesale & retail | 2025 |
| Gode Jagd Limited | Administrative & support | 2017 |
| Godmon Partnership Limited | Professional & scientific | 2003 |
| Gold Hill Residents Limited | Households | 2026 |
| Gold Sona Limited | Real estate | 2025 |
| Goldchip Computer Consultants Ltd | Information & communication | 2014 |
| Goldell Limited | Manufacturing | 2015 |
| Golden Nest Property Services Ltd | Real estate | 2021 |
| Golf Alpha Bravo Limited | Transport & logistics | 2022 |
| Golfingtrips Limited | Administrative & support | 2026 |
| Gondor Projects Ltd | Information & communication | 2026 |
| Good Game Communications Ltd | Professional & scientific | 2022 |
| Goodburn Engineering Limited | Manufacturing | 1968 |
| Goodburn Holdings Limited | Professional & scientific | 1998 |
| Goodburn Plastics Limited | Manufacturing | 2007 |