| Gilbert Landor Frost Limited | Wholesale & retail | 2014 |
| Gilded Peaks Limited | Wholesale & retail | 2020 |
| Gillin Ltd | Real estate | 2024 |
| Gilling Consultancy Limited | Professional & scientific | 2025 |
| Gilmoor Communications Limited | Construction | 2023 |
| Gilsan Sports Limited | Wholesale & retail | 2003 |
| Ginger Box Ltd | Information & communication | 2015 |
| Ginger Digit Limited | Professional & scientific | 2016 |
| Giory Holdings Limited | Financial services | 2024 |
| Giory Investments Limited | Real estate | 2024 |
| Girl Gone Wild Foods Ltd | Wholesale & retail | 2021 |
| Gislen Software (UK) Limited | Information & communication | 2016 |
| Gitanjali Properties Limited | Real estate | 2022 |
| Giugulea Ltd | Information & communication | 2020 |
| Givergy Ltd. | Professional & scientific | 2001 |
| Givergy Nominees Limited | Professional & scientific | 2026 |
| Glan Rhos Joint Venture Ltd | Real estate | 2026 |
| Glaslyn Flats Management Limited | Households | 1974 |
| Glass Pharms Ltd | Agriculture & fishing | 2020 |
| Glbm Estates Limited | Real estate | 2004 |
| Glendronics Management Ltd | Professional & scientific | 2026 |
| Glenkora Ltd | Professional & scientific | 2020 |
| GLF Management Limited | Extraterritorial | 2017 |
| Global Copyright Limited | Professional & scientific | 2023 |
| Global Ethics Group Limited | Administrative & support | 2011 |
| Global Ethics Investments Ltd | Administrative & support | 2009 |
| Global Ethics Limited | Wholesale & retail | 2004 |
| Global Gleam Ltd | Professional & scientific | 2015 |
| Global Guarantee Capital Investment Partnership 1 Management Company Ltd | Financial services | 2025 |
| Global Holdings Limited | Professional & scientific | 1991 |
| Global Hotels & Resorts Partners Ltd | Professional & scientific | 2024 |
| Global Protection GRP UK Limited | Other services | 2021 |
| Global Solutions Team UK Limited | Administrative & support | 2024 |
| Global Trading & Consultancy Limited | Professional & scientific | 2009 |
| Global World Entertainment Ltd | Information & communication | 2010 |
| Globalinvest Ltd | Financial services | 2016 |
| GLS Consultants Ltd | Administrative & support | 2007 |
| GMR Civils Limited | Construction | 2017 |
| Gnat UK Limited | Construction | 2005 |
| GO-4IT IT Services Ltd | Information & communication | 2025 |
| Go.Stop Limited | Hospitality | 2023 |
| GO2 for YOU Ltd. | Information & communication | 2019 |
| GO2 Group of Companies Ltd | Administrative & support | 2019 |
| Godliman Consulting Limited | Professional & scientific | 2014 |
| Gold Property Group Ltd | Real estate | 2019 |
| Gold Property Ltd | Real estate | 2019 |
| Golden Court Enterprises Ltd | Extraterritorial | 2013 |
| Golden Fortress Ltd | Real estate | 2025 |
| Golden Hive Events Ltd | Manufacturing | 2022 |
| Golden Joy Assets Holdings Ltd | Real estate | 2025 |
| Golden Proportion Limited | Professional & scientific | 2007 |
| Golden Rhomboi Ltd | Manufacturing | 2025 |
| Goldencat Homes Ltd | Real estate | 2026 |
| Goldform Limited | Administrative & support | 2018 |
| Goldmar Global Logistics Ltd | Transport & logistics | 2023 |
| Goldsbrough Ltd | Professional & scientific | 2012 |
| Golf LAB Performance Studios Ltd | Arts & recreation | 2025 |
| Goodey Aziz Ltd | Professional & scientific | 2023 |
| Goodnight Hotels Ltd | Extraterritorial | 2020 |
| Goodwille Project Management Ltd | Professional & scientific | 2017 |
| Goodwood Capital Limited | Financial services | 2011 |
| Goody Granola Limited | Wholesale & retail | 2021 |
| Gooms Properties Ltd | Construction | 2024 |
| Gordian Broadcast Limited | Information & communication | 2014 |
| Gordian Knot Solutions Limited | Information & communication | 2011 |
| Gordon House Residents Association Limited | Real estate | 1988 |
| Gorgeous Boutique of London Ltd | Wholesale & retail | 2021 |
| Gorsgold Ltd | Other services | 2018 |
| GP Material Solutions Ltd | Professional & scientific | 2012 |
| GPG Heating Ltd | Construction | 2025 |
| Gptb Holdings II Ltd | Financial services | 2026 |
| Gptb Holdings Ltd | Financial services | 2026 |
| GR Warneford Limited | Professional & scientific | 2012 |
| Gracey Architectural Limited | Professional & scientific | 2017 |
| Graeme Moyle Limited | Professional & scientific | 2014 |
| Graham Faulkner Building & Joinery Services Limited | Construction | 2015 |
| Graham House Limited | Hospitality | 2019 |
| Graham Taylor Ltd | Information & communication | 2015 |
| Grail Scout Limited | Information & communication | 2025 |
| Graiys Consulting Limited | Professional & scientific | 2025 |
| Granatus Partners Limited | Information & communication | 2018 |
| Grand Luxury Limited | Administrative & support | 2016 |
| Grandstand Motor Sport Limited | Administrative & support | 2009 |
| Grandstand Motor Sport Transport Limited | Administrative & support | 2018 |
| Grange Road Properties (Middlesbrough) Limited | Real estate | 1992 |
| Grangekeep Limited | Financial services | 1982 |
| Grass Roots Forest School C.I.C. | Education | 2015 |
| Grave Situation Ltd | Arts & recreation | 2026 |
| Gray Global Placements Limited | Administrative & support | 2018 |
| Gray Tiger Limited | Administrative & support | 2021 |
| Gray TM Ltd | Construction | 2024 |
| Gray's Inn 199 Limited | Real estate | 2023 |
| Grays Inn Properties Ltd | Construction | 2021 |
| Great British Brands Club Limited | Extraterritorial | 2017 |
| Great British Luxury Limited | Professional & scientific | 2026 |
| Great Galah Ltd | Manufacturing | 2025 |
| Great Tower Street Limited | Real estate | 2025 |
| Great Western Print Limited | Manufacturing | 2019 |
| Greatdrum Limited | Real estate | 1991 |
| Greater London Home Information Packs (HIP) Limited | Real estate | 2006 |