| Gianluca Limited | Other services | 2016 |
| Gibuelah Tech Limited | Wholesale & retail | 2022 |
| Gidney Developments Limited | Construction | 2006 |
| Gijo Engineering Works Ltd | Manufacturing | 2022 |
| Gilbey-Smith Limited | Financial services | 2025 |
| Gilet Group Limited | Construction | 2024 |
| Gili Build Ltd | Construction | 2021 |
| Gili Fencing (UK) Ltd | Administrative & support | 2022 |
| Gili Group Ltd | Financial services | 2022 |
| Gill Gateways Ltd | Real estate | 2026 |
| Gina Tricot UK Ltd | Wholesale & retail | 2026 |
| Giosg.Com Limited | Administrative & support | 2016 |
| Gittins Properties Limited | Households | 2024 |
| Glebe Gardens Management (Southam) Limited | Households | 1962 |
| Gleeson Executive Limited | Administrative & support | 2003 |
| Glen Court (Salisbury) Residents Association Limited | Real estate | 1965 |
| Glenhurst Ltd | Financial services | 2021 |
| GLG Property Investments Limited | Real estate | 2016 |
| Glmr Limited | Arts & recreation | 2021 |
| Global EMC Holdings Limited | Financial services | 2018 |
| Global EMC UK Ltd | Manufacturing | 1994 |
| Global Expat Jobs Ltd | Information & communication | 2025 |
| Global Hospitality Investment Group UK Limited | Financial services | 2020 |
| Global Medical Solutions Limited | Health & social care | 2018 |
| Global Nomad Travel Ltd | Extraterritorial | 2013 |
| Global Wind Tech Ltd | Other services | 2016 |
| Glocalcan Limited | Information & communication | 2021 |
| Glodry Limited | Other services | 2023 |
| Glooko Ltd | Information & communication | 2014 |
| Glorykeys Ltd | Wholesale & retail | 2025 |
| Gluten Free Yourself Ltd | Hospitality | 2025 |
| Glynne-Jones Ltd | Information & communication | 1997 |
| Glynne-Jones@Home Limited | Real estate | 2007 |
| GM Housing Solutions Limited | Real estate | 2026 |
| Gmomo Ltd | Manufacturing | 2025 |
| GMP Art Limited | Wholesale & retail | 2021 |
| Go Financial Consulting Ltd | Professional & scientific | 2022 |
| Gobikes Ltd | Manufacturing | 2023 |
| Godfrey Payton Holdings Ltd | Real estate | 2023 |
| Godfrey Payton LLP | | 2023 |
| Godwin Recruitment Ltd. | Administrative & support | 2015 |
| Godwins Construction Ltd | Construction | 2024 |
| Gojiraf Holding Limited | Financial services | 2020 |
| Gold Reflections Limited | Manufacturing | 1979 |
| Golden Dragon Consulting Limited | Professional & scientific | 2025 |
| Golden New Energy Limited | Administrative & support | 2011 |
| Golden Peak UK Limited | Arts & recreation | 2024 |
| Golf Centre Ltd | Arts & recreation | 2025 |
| Gonika Logistics Limited | Transport & logistics | 2020 |
| Gonika-Trans Ltd | Transport & logistics | 2014 |
| Goodfoot Development Ltd | Administrative & support | 2023 |
| Goodman Property Development Services Ltd | Construction | 2024 |
| Goodway Court Management Limited | Households | 1994 |
| Gopathpower Ltd | Professional & scientific | 2025 |
| Gorselands Court Limited | Households | 1994 |
| Gorton’S Gardens Ltd | Administrative & support | 2025 |
| Gosai Consulting Limited | Information & communication | 2011 |
| Gpst Limited | Professional & scientific | 2007 |
| GR Electrical and Maintenance Limited | Construction | 2017 |
| Grace Gradon Interiors Limited | Wholesale & retail | 2024 |
| Grachris Ltd | Real estate | 2025 |
| Gradar Limited | Information & communication | 2020 |
| Graft Fitness Limited | Health & social care | 2019 |
| Grand Concept Limited | Real estate | 2016 |
| Graphic IP Limited | Professional & scientific | 2011 |
| Graphic Relief Limited | Manufacturing | 2010 |
| Graphite Properties Ltd | Professional & scientific | 2014 |
| Grappla BJJ Limited | Information & communication | 2025 |
| Grassroots Studios Ltd | Professional & scientific | 2015 |
| Gray Matter Agency Limited | Professional & scientific | 2016 |
| Gray&Kays Transport Engineering Support Ltd | Manufacturing | 2025 |
| Great Wall (Warwick) Limited | Hospitality | 2024 |
| Great Western Mews Management Company Limited | Households | 2021 |
| Green and Gold Estates Ltd | Construction | 2024 |
| Green and Wild Flowers Limited | Wholesale & retail | 2022 |
| Green Brown Ltd | Professional & scientific | 2013 |
| Green Circle Solutions Limited | Professional & scientific | 2020 |
| Green Country Limited | Other services | 2023 |
| Green Ducklings Limited | Professional & scientific | 2023 |
| Green Elephant Cards Ltd | Wholesale & retail | 2021 |
| Green Kinesis Ltd | Professional & scientific | 2025 |
| Green Leaf Developments Ltd | Professional & scientific | 2007 |
| Green Shed Talent Development Limited | Administrative & support | 2019 |
| Green Square Marketing Limited | Professional & scientific | 2010 |
| Greenbean Mobile Coffee Company Ltd | Manufacturing | 2008 |
| Greenfeather Renovations Ltd | Construction | 2024 |
| Greenford Consulting Limited | Professional & scientific | 2004 |
| Greensparx Software Limited | Information & communication | 2025 |
| Grestan Limited | Professional & scientific | 2016 |
| Greville Business Park Management Company Limited | Households | 2026 |
| Greville House Consultancy Limited | Professional & scientific | 2016 |
| Greville House Consultants Limited | Extraterritorial | 2017 |
| Greville House Services Limited | Professional & scientific | 2000 |
| Greybury Limited | Professional & scientific | 1992 |
| Gridworth Limited | Professional & scientific | 1990 |
| Griffins Auctioneers and Valuers Ltd | Wholesale & retail | 2022 |
| Grindsbrook Estates Limited | Professional & scientific | 1991 |
| Grishina Group Limited | Financial services | 2025 |
| Groove Soul Records Limited | Information & communication | 2020 |
| Grosvenor Catering Facilities Management Limited | Extraterritorial | 2010 |