| Gathering Momentum Ltd | Professional & scientific | 2017 |
| Gatsby Properties Limited | Households | 2020 |
| Gavi Holdings PVT Ltd | Financial services | 2026 |
| Gavin Jones Consultancy Ltd | Professional & scientific | 2018 |
| Gavlars Pest Control Ltd | Administrative & support | 2024 |
| GB BC SS Ltd | Professional & scientific | 2018 |
| GB Sales & Repairs Ltd | Wholesale & retail | 2019 |
| GBD Southwest Limited | Construction | 2024 |
| Gbrr 2025 Ltd | Hospitality | 2025 |
| GC Wind Services Limited | Construction | 2014 |
| GCB Clinical Consulting Ltd | Professional & scientific | 2016 |
| GCM Vehicles Limited | Wholesale & retail | 2024 |
| GCO Property Services Ltd | Administrative & support | 2025 |
| Gcox Holdings Ltd | Real estate | 2021 |
| GCS Consultancy Ltd | Education | 2026 |
| GD & SON Building & Roofing Contractors Ltd | Construction | 2001 |
| GD7 Ltd | Professional & scientific | 2014 |
| GDK2022 Ltd | Wholesale & retail | 2022 |
| GDL Software Solutions Ltd | Information & communication | 2021 |
| GDM Commerce Ltd | Wholesale & retail | 2019 |
| GDS UK Holdings Ltd | Professional & scientific | 2022 |
| GDW Developments Ltd | Real estate | 2026 |
| Geared 4 Success Ltd | Wholesale & retail | 2025 |
| Geared Ltd | Manufacturing | 2011 |
| Geared Marine Ltd | Manufacturing | 2019 |
| Gearshift Ltd | Professional & scientific | 2023 |
| GED King Plans Limited | Professional & scientific | 2017 |
| GEE VEE Cardiac Care Limited | Health & social care | 2021 |
| Geek Collective (UK) Ltd | Information & communication | 2026 |
| Geeky Blinders Ltd | Arts & recreation | 2019 |
| Gehco Limited | Construction | 2018 |
| GEM FB Ltd | Households | 2024 |
| Gemelli Consulting Ltd | Professional & scientific | 2025 |
| Gemini Contract Cleaning Services Ltd | Construction | 2020 |
| Gemini Home Improvements (SW) Ltd | Construction | 2020 |
| Gempire Sups Ltd | Wholesale & retail | 2020 |
| Gemstock Limited | Real estate | 2013 |
| GEN3 Marketing UK Limited | Financial services | 2020 |
| Genepro Limited | Professional & scientific | 2004 |
| Generation Rebuilds Ltd | Real estate | 2026 |
| Generation Wealth Holdings Limited | Financial services | 2021 |
| Generation Wealth Ltd | Financial services | 2015 |
| Genetics Climbing Ltd | Manufacturing | 2022 |
| Gentek Limited | Households | 2017 |
| Genteq Limited | Extraterritorial | 2007 |
| Gentian Hill Boarding Kennels and Cattery Ltd | Agriculture & fishing | 2020 |
| Genuine Carpentry & Joinery Ltd | Manufacturing | 2026 |
| Genx Enterprises Ltd | Information & communication | 2024 |
| GEO Alpha Limited | Information & communication | 2018 |
| Geobar Consulting Limited | Wholesale & retail | 2017 |
| Geodetic Consultancy Limited | Professional & scientific | 2015 |
| Geoff Flowers Therapy Limited | Health & social care | 2025 |
| George Grose Ltd | Wholesale & retail | 2025 |
| George Guest House Ltd | Hospitality | 2022 |
| George Iosub Logistics Ltd | Wholesale & retail | 2016 |
| George Joseph Diagnostics Ltd | Health & social care | 2025 |
| George Place Developments Ltd | Construction | 2017 |
| George Rosenberg Law Ltd | Professional & scientific | 2019 |
| George Searles Ltd | Construction | 2016 |
| George Warren Welding Limited | Professional & scientific | 2017 |
| Georges 971 Ltd | Construction | 2017 |
| Georgian House (Starcross) Management Company Limited | Households | 1984 |
| Geostrat Ltd | Professional & scientific | 2025 |
| Geranos Engineering Solutions Ltd | Professional & scientific | 2025 |
| GET Carter Film Ltd | Information & communication | 2018 |
| GET Down Events Ltd | Arts & recreation | 2019 |
| GET FD Limited | Professional & scientific | 2025 |
| Gethsamane Limited | Health & social care | 2015 |
| GG Fast Solutions Ltd | Construction | 2018 |
| Ggmc Plastering Limited | Construction | 2021 |
| GH Aviation & Engineering Services Limited | Transport & logistics | 2016 |
| GH Laminating Ltd | Manufacturing | 2017 |
| Ghayedi Property Development Limited | Financial services | 2018 |
| GHL Subco Limited | Financial services | 2016 |
| GHQ Salon Limited | Other services | 2019 |
| GHQ Training Limited | Education | 2002 |
| Ghulam Yasin Ltd | Wholesale & retail | 2025 |
| GI Autos Ltd | Wholesale & retail | 2017 |
| GI Property Group Limited | Real estate | 2025 |
| Giantmicrobes UK Limited | Wholesale & retail | 2003 |
| Gibbins Property PLY Limited | Information & communication | 2024 |
| Gibbon Lane Bakery Ltd | Manufacturing | 2019 |
| Gibbs Performance Ltd | Wholesale & retail | 2024 |
| GID Investments Limited | Financial services | 2020 |
| Gifts for Gentlemen Limited | Extraterritorial | 1999 |
| Giga Logistic Ltd | Wholesale & retail | 2017 |
| Gigglebox Ltd | Arts & recreation | 2025 |
| Gilbert and Coles (Plymouth) Limited | Administrative & support | 1954 |
| Gill Akaster LLP | | 2009 |
| Gillett's (Holdings) Limited | Real estate | 2013 |
| Gilmore GAS Solutions Limited | Construction | 2014 |
| Ginger Agency (SW) Ltd | Professional & scientific | 2021 |
| Given Properties Limited | Construction | 2011 |
| GJ Rowe Cleaning. Ltd | Administrative & support | 2025 |
| GJC Advisory Ltd | Professional & scientific | 2021 |
| Gjhaz Limited | Financial services | 2024 |
| Gjwraw Ltd | Professional & scientific | 2022 |
| GK Classic Car Storage Limited | Transport & logistics | 2019 |
| GKF Healthcare Services Ltd | Health & social care | 2026 |
| GKS Holdings (Devon) Limited | Financial services | 2025 |