| Genito Property Ltd | Real estate | 2020 |
| Genpride Ltd | Health & social care | 2022 |
| Genseed Underground Services Limited | Construction | 1998 |
| Gentry Construction Ltd | Construction | 2021 |
| Genuinely YOU Limited | Manufacturing | 2016 |
| Genwea Limited | Real estate | 2026 |
| GEO Automotive Transport Ltd | Wholesale & retail | 2025 |
| GEO Deny Ltd | Wholesale & retail | 2018 |
| Geomark Limited | Professional & scientific | 2021 |
| George Edward Holdings Limited | Financial services | 2020 |
| George Gage Transport UK Limited | Transport & logistics | 2026 |
| George Iwoi Ltd | Information & communication | 2019 |
| George Jacques & Co Property Consultants Limited | Real estate | 2015 |
| George Martin Carpentry & Joinery Ltd | Manufacturing | 2020 |
| George Pearce and Company Limited | Extraterritorial | 2021 |
| Georgie BOY Productions Ltd | Information & communication | 2017 |
| Georgina Grace Limited | Wholesale & retail | 2014 |
| Georgina's Garden of Care Ltd | Health & social care | 2024 |
| Geosynthetic Technology Limited | Construction | 1990 |
| Gerard Lewis Designs Ltd | Manufacturing | 2012 |
| German Sports Car Spares Limited | Wholesale & retail | 2007 |
| Gesar Technologies Ltd | Wholesale & retail | 2019 |
| GET Dizzy AI Ltd | Information & communication | 2026 |
| GET IT on TV Limited | Information & communication | 2013 |
| GET Life Ready Ltd | Education | 2025 |
| GET Pixel Perfection Limited | Information & communication | 2025 |
| GET Well Friends Limited | Wholesale & retail | 2007 |
| Getudriving Limited | Education | 2021 |
| GEX Performance Ltd | Administrative & support | 2009 |
| GF Fortunes Ltd | Health & social care | 2022 |
| GF Logistics (UK) Limited | Administrative & support | 2011 |
| GFG GAS Detection UK Limited | Wholesale & retail | 2006 |
| GFL Management Ltd | Other services | 2009 |
| GFM Clear Communications Ltd | Administrative & support | 2016 |
| GFM Group Holdings Limited | Financial services | 2016 |
| GFM Holdings Limited | Financial services | 1998 |
| GFM Property Ltd | Construction | 2026 |
| GFM Services Limited | Extraterritorial | 1993 |
| GFM Unit 6 Limited | Extraterritorial | 2016 |
| GFS International Limited | Administrative & support | 2020 |
| GG Beecroft Trees Ltd | Agriculture & fishing | 2025 |
| GG Racing Ltd | Administrative & support | 2020 |
| GG Support Limited | Construction | 2019 |
| GG Tech Limited | Information & communication | 2025 |
| GG-207-187 Limited | Real estate | 2022 |
| Ghanson Tech Limited | Information & communication | 2019 |
| Ghidelca Ltd | Administrative & support | 2018 |
| Ghost Detail Limited | Manufacturing | 2020 |
| Ghostrider Films Ltd | Information & communication | 2019 |
| GHP Transport Ltd | Transport & logistics | 2025 |
| Giant Ventures Limited | Administrative & support | 2010 |
| Giarrizzo Properties Ltd | Households | 2025 |
| Gibbins Limited | Hospitality | 2023 |
| Gidc Group Ltd | Water & waste | 2020 |
| Giffords Hall Farms Ltd | Extraterritorial | 2012 |
| Gifted Associates (GA) Limited | Professional & scientific | 2016 |
| Giggles & Growth Childcare Ltd | Education | 2025 |
| Gigi Healthcare Ltd | Health & social care | 2024 |
| Gilbert Capital Limited | Financial services | 2015 |
| Gilbey Instrumentation Limited | Construction | 2012 |
| Giles & Giles Contractors Limited | Manufacturing | 2014 |
| Giles & Giles Properties Limited | Real estate | 2023 |
| Gillard Flooring Specialists Limited | Administrative & support | 2011 |
| Gillette Property and Construction Company Limited | Professional & scientific | 1972 |
| Gingeology Ltd | Mining & quarrying | 2012 |
| Ginger NUT Media Limited | Education | 2010 |
| Ginger Prince Business Solutions Ltd | Professional & scientific | 2024 |
| Ginio LLP | | 2023 |
| Ginography Limited | Extraterritorial | 2023 |
| Gipping Finance Limited | Financial services | 2015 |
| Gipping Homes Ltd | Real estate | 2024 |
| Giraffesalive Investments Limited | Financial services | 2025 |
| Girl Next Door Limited | Administrative & support | 2012 |
| Gisbertz Consulting Ltd | Information & communication | 2025 |
| Giudici & Co Limited | Administrative & support | 2023 |
| Giving X Ltd | Information & communication | 2022 |
| Gizmo Homes Ltd | Real estate | 2024 |
| GJ & LA Loines Heating Services Ltd | Construction | 2025 |
| GJ Braithwaite Construction Limited | Construction | 2009 |
| GJ Building & Electrical Services Ltd | Construction | 2020 |
| GJ Building Services Ltd | Construction | 2024 |
| GJN Group Ltd | Wholesale & retail | 2026 |
| GJP Builders Ltd | Construction | 2015 |
| GJS Design Consultants Limited | Professional & scientific | 2011 |
| Gjtw Limited | Real estate | 2021 |
| GK Care Holdings Ltd | Financial services | 2020 |
| GLA Group Ltd | Financial services | 2017 |
| Gladas Creative Ltd | Professional & scientific | 2021 |
| Gladepine Limited | Other services | 1997 |
| Gladstone Portfolio Limited | Professional & scientific | 2008 |
| Gladwell Oyster Growers Ltd. | Administrative & support | 2013 |
| Gladwins Farm Holdings Ltd | Professional & scientific | 2012 |
| Glamour and Moda by AE Ltd | Wholesale & retail | 2025 |
| Glassfusion Limited | Manufacturing | 1972 |
| Glassfusion Manufacturing Limited | Manufacturing | 2006 |
| GLD Catering Ltd | Hospitality | 2020 |
| GLE Builders Limited | Construction | 2015 |
| Gleam Crystals Ltd | Wholesale & retail | 2024 |
| Glebe Farm Hedging Ltd | Wholesale & retail | 2000 |
| Glendon House Limited | Health & social care | 2017 |