| Galliani Ltd | Construction | 2015 |
| Galliven Agencies Limited | Wholesale & retail | 2018 |
| Ganss Limited | Hospitality | 2013 |
| Garden Verve Limited | Administrative & support | 2018 |
| Gardencare Contracting Limited | Administrative & support | 2004 |
| Gardencare Supplies Limited | Wholesale & retail | 1984 |
| Garlands Court (Redhill) Management Company Limited | Real estate | 2007 |
| Gary LEE Curran Construction Ltd | Construction | 2021 |
| Gatton Close (Sutton) Management Limited | Real estate | 2002 |
| Gatwick Retail Limited | Wholesale & retail | 2015 |
| Gavin Singh Consultancy Ltd | Information & communication | 2019 |
| GB Property Direct Limited | Real estate | 2019 |
| GBZ Supply Ltd | Wholesale & retail | 2025 |
| GCS England Ltd | Administrative & support | 2017 |
| GD Decor Limited | Construction | 2023 |
| GD Kitchen Fittings Limited | Manufacturing | 2023 |
| GDF Consultancy Services Limited | Professional & scientific | 2024 |
| Gemwicks Limited | Real estate | 2026 |
| General Builders & Maintenance Contractors Ltd | Professional & scientific | 2007 |
| Genesis Community Foundation | Hospitality | 2025 |
| Genesis Internet Solutions Limited | Information & communication | 2013 |
| Genix Care Ltd | Health & social care | 2023 |
| Gently Elephant Limited | Wholesale & retail | 2012 |
| Geobert Clothing Ltd | Wholesale & retail | 2019 |
| GET Lost Travel Ltd | Wholesale & retail | 2026 |
| Geyfords Limited | Wholesale & retail | 1971 |
| Ggpay Limited | Information & communication | 2026 |
| GI Events Limited | Professional & scientific | 2022 |
| GIL Dove & Associates Limited | Professional & scientific | 1996 |
| Gill Legal Ltd | Professional & scientific | 2026 |
| Gilloway Flooring Contracts Limited | Construction | 2024 |
| Gillusion Ltd | Transport & logistics | 2024 |
| Ginger Cat Consulting Ltd | Professional & scientific | 2017 |
| Ginger Frog Catering Ltd | Hospitality | 2018 |
| Givers Gain Limited | Professional & scientific | 2005 |
| Gk-Mas Ltd | Information & communication | 2010 |
| Gladwell Ventures Limited | Real estate | 2018 |
| Glam Bar Beauty Ltd | Wholesale & retail | 2025 |
| Glamaglitter Limited | Other services | 2019 |
| Glamavan Franchise Limited | Arts & recreation | 2023 |
| Glassify Ltd | Wholesale & retail | 2024 |
| GLC Scaffolding Ltd | Construction | 2025 |
| Glen Leyser Video Limited | Professional & scientific | 2025 |
| Glenchi Property Ltd. | Real estate | 2017 |
| Glenfield Property Group Ltd | Construction | 2026 |
| Glenwood Consultancy Limited | Administrative & support | 2018 |
| Global Assets KK Ltd | Real estate | 2025 |
| Global Horizon Travels Ltd | Information & communication | 2025 |
| Global Living Limited | Financial services | 2018 |
| Global Rights Compliance LLP | | 2013 |
| Globe Inn KK Limited | Real estate | 2014 |
| Glocalagent Ltd | Information & communication | 2025 |
| Gloriousk Limited | Health & social care | 2016 |
| Glow & Calm Ltd | Manufacturing | 2025 |
| Glyndale Grange Lessees Limited | Households | 1965 |
| Go Bento Limited | Hospitality | 2020 |
| Go HAM Collectables Ltd | Wholesale & retail | 2025 |
| Go Lola Design Ltd | Professional & scientific | 2024 |
| Go Progression Ltd | Information & communication | 2011 |
| Go Yachting Limited | Extraterritorial | 2011 |
| Golbik GBS Limited | Construction | 2019 |
| Goldacre London Limited | Households | 2018 |
| Golden Crop Ltd | Manufacturing | 2014 |
| Golden Key Asia Limited | Hospitality | 2022 |
| Golden Overseas Ltd | Wholesale & retail | 2025 |
| Golden Piggy Productions Ltd | Arts & recreation | 2023 |
| GOLFBALLS2U Ltd | Wholesale & retail | 2021 |
| GOLFBALLS4U Ltd | Wholesale & retail | 2021 |
| GOLFBALLS4YOU Ltd | Wholesale & retail | 2020 |
| Goloh Limited | Extraterritorial | 2017 |
| Good Guru Limited | Wholesale & retail | 2015 |
| Goodhart and Sons Limited | Construction | 2025 |
| Goodwin (Aveley) Limited | Administrative & support | 2003 |
| Goodwin Associates Group Limited | Professional & scientific | 2003 |
| Goodwin Associates Limited | Construction | 1983 |
| Goodwin Commercial Limited | Construction | 1992 |
| Gosia Zamosia Limited | Professional & scientific | 2019 |
| Gotidal Ltd | Extraterritorial | 2012 |
| Gourmet Afrique & Spice Ltd | Wholesale & retail | 2020 |
| Goziem Ltd | Administrative & support | 2016 |
| Gpex B.V. Ltd | Construction | 2024 |
| Grace Vineyard Church | Other services | 2004 |
| Grade a Tutoring Ltd | Education | 2014 |
| Grand Openings Limited | Construction | 2017 |
| Grand Winner UK Limited | Wholesale & retail | 2025 |
| Graph Electrical Services Limited | Construction | 2007 |
| Grass Roots Investments Limited | Real estate | 2019 |
| Grassify Ltd | Administrative & support | 2013 |
| Grassy Pathways Ltd | Professional & scientific | 2018 |
| GRC Productions Ltd | Arts & recreation | 2019 |
| Great Sight Ltd | Administrative & support | 2013 |
| Greatness Consulting Limited | Administrative & support | 2023 |
| Grebe Property Ltd | Real estate | 2024 |
| Green Dome Enterprises Limited | Real estate | 2023 |
| Green Executive Cars Limited | Transport & logistics | 2007 |
| Green Future Living Ltd | Construction | 2022 |
| Green World Safety and Security Consultancies Ltd | Professional & scientific | 2021 |
| Greencraft Urban Limited | Other services | 2015 |
| Greenlight Associates Limited | Hospitality | 2004 |
| Greenspire Energy Solutions Ltd | Energy | 2025 |