| GEL Creative Ltd | Professional & scientific | 2026 |
| Geldart Property Partnership LLP | | 2014 |
| Gelmetix Limited | Professional & scientific | 2012 |
| GEM Mounts Ltd | Manufacturing | 2025 |
| Gemini UK Holdings Ltd | Real estate | 2022 |
| Gemma Robertson Ltd | Other services | 2013 |
| GEN Group Limited | Extraterritorial | 2020 |
| GEN1US Limited | Extraterritorial | 2026 |
| Genecraft Labs Ltd | Wholesale & retail | 2024 |
| General Business Trading Ltd | Wholesale & retail | 2024 |
| Generate Construction Management Limited | Construction | 2020 |
| Generate Land Limited | Real estate | 2011 |
| Generate Real Estate (LDS01) Limited | Real estate | 2024 |
| Generate Real Estate Limited | Real estate | 2018 |
| Genesys Group Ltd | Professional & scientific | 2018 |
| Genevista Technologies Ltd | Wholesale & retail | 2024 |
| Gengame Ltd | Information & communication | 2013 |
| Genports Limited | Extraterritorial | 2018 |
| GENR8 Holdings Limited | Administrative & support | 2021 |
| Gentle Acquisitions Limited | Real estate | 2022 |
| Gentle Investments Limited | Real estate | 2021 |
| GEO Associates Ltd | Professional & scientific | 2018 |
| GEO Holdings Inc. Limited | Hospitality | 2023 |
| Geo-Obarogie Ltd | Transport & logistics | 2023 |
| Geodoro Limited | Health & social care | 2015 |
| Geoff Fowler Developments Ltd | Construction | 2021 |
| Geoland Limited | Extraterritorial | 1998 |
| Geoplan Spatial Intelligence Limited | Information & communication | 1986 |
| George Sikes Homes Ltd | Construction | 2015 |
| George's Emporium Limited | Professional & scientific | 2025 |
| Georgias Mews Limited | Real estate | 2025 |
| Geronigo Ltd | Arts & recreation | 2018 |
| Gerrard Marsh Limited | Extraterritorial | 2025 |
| GF Asset Management Limited | Real estate | 2022 |
| GG-163-821 Limited | Real estate | 2021 |
| GG-667-501 Limited | Real estate | 2021 |
| GGD Holdings Ltd | Financial services | 2018 |
| GGO Limited | Other services | 2017 |
| GH Associates Ltd | Administrative & support | 2025 |
| GH Braintree Holdings Limited | Professional & scientific | 2004 |
| GH Braintree Limited | Health & social care | 2004 |
| GH Lanchester Road Holdings Limited | Professional & scientific | 2007 |
| GH Lanchester Road Limited | Health & social care | 2007 |
| GH Newco 1 Limited | Professional & scientific | 2012 |
| GH Newco 2 Limited | Professional & scientific | 2012 |
| GH Newco 3 Limited | Professional & scientific | 2012 |
| GH Newco 4 Limited | Professional & scientific | 2012 |
| GH North Yorkshire Holdings Limited | Public administration | 2005 |
| GH North Yorkshire Limited | Construction | 2000 |
| GH Purchasing Ltd | Administrative & support | 2025 |
| GH Runwell Holdings Limited | Professional & scientific | 2006 |
| GH Runwell Limited | Health & social care | 2006 |
| GH Stanley Holdings Limited | Professional & scientific | 2007 |
| GH Stanley Limited | Health & social care | 2007 |
| GHC Consultants Limited | Professional & scientific | 2019 |
| Ghg-Afco (Luton) Limited | Construction | 2001 |
| Ghisallo Ltd | Wholesale & retail | 2020 |
| GHL Management Ltd | Professional & scientific | 2023 |
| Ghobari for Trade Ltd | Construction | 2024 |
| Ghsr LLP | | 2011 |
| Giamatti Limited | Extraterritorial | 2026 |
| Gianni's Ristorante Limited | Hospitality | 2013 |
| Giant Global Limited | Extraterritorial | 2026 |
| Giant OAF Limited | Arts & recreation | 2017 |
| Gico (Holdings) Limited | Financial services | 2017 |
| Gico Limited | Real estate | 2007 |
| Gifted by Ollie Ltd | Wholesale & retail | 2025 |
| Gifting Limited | Wholesale & retail | 2024 |
| Gilded AGE Group Ltd | Information & communication | 2024 |
| Gill's Mews Property Management Company Limited | Households | 2025 |
| Gills Auto Services Ltd | Wholesale & retail | 2011 |
| Gilly's Place Ltd | Hospitality | 2018 |
| Gillygate Limited | Real estate | 2019 |
| Gilmour and Forster Ltd | Construction | 2025 |
| Gimel London Limited | Extraterritorial | 2012 |
| Gincredible Limited | Extraterritorial | 2026 |
| Ginger JAR Services Limited | Hospitality | 2009 |
| Gipsy Ltd | Extraterritorial | 2020 |
| Gistlens UK Ltd | Information & communication | 2022 |
| Give a FIG Volunteering | Administrative & support | 2016 |
| Gizia Properties Limited | Real estate | 2020 |
| GJ Collective Ltd | Professional & scientific | 2025 |
| GK Cooling Limited | Other services | 2017 |
| Glade Deer Management Limited | Agriculture & fishing | 2015 |
| Glampfest Events Limited | Arts & recreation | 2020 |
| Glanbia (UK) Limited | Professional & scientific | 1996 |
| Glanbia Consumer Meats Limited | Professional & scientific | 1987 |
| Glanbia Holdings Limited | Professional & scientific | 1994 |
| Glanbia Investments (UK) Limited | Professional & scientific | 1988 |
| Glanbia Milk Limited | Administrative & support | 1961 |
| Glanbia Performance Nutrition (UK Sales Division) Limited | Wholesale & retail | 2017 |
| Glanbia Performance Nutrition (UK) Limited | Manufacturing | 1993 |
| Glanbia Securities (UK) Limited | Professional & scientific | 1989 |
| Glanville Cleansing Holdings (SW) Limited | Financial services | 2017 |
| Glanville Cleansing Limited | Construction | 2000 |
| Glanville Holdings GC Limited | Financial services | 2024 |
| Glanville Training Academy Limited | Construction | 2017 |
| Glanville Trenchless Solutions Limited | Construction | 2023 |
| Glassdoor Ltd | Extraterritorial | 2012 |
| GLASSHOUSES123 Limited | Real estate | 2016 |