| Gaywood Farm Partners Ltd | Agriculture & fishing | 2024 |
| Gaywood Industrial Limited | Real estate | 2019 |
| Gazelle Creative Ltd | Information & communication | 2010 |
| GB Architectural Design Ltd | Professional & scientific | 2010 |
| GB Commodities Limited | Professional & scientific | 2016 |
| GB SY Group Limited | Other services | 2022 |
| Gbmf Engineering (Holdings) Limited | Financial services | 2024 |
| GBW Studio Ltd | Professional & scientific | 2020 |
| Gcjk Services Ltd | Administrative & support | 2016 |
| Gcmp Limited | Professional & scientific | 2016 |
| Gcpharma Ltd | Other services | 2018 |
| GCW Capital Ltd | Wholesale & retail | 2024 |
| GD UK Southern Ltd | Construction | 2026 |
| GDA Cars Limited | Wholesale & retail | 2003 |
| GDW Plumbing & Heating Property Maintenance Ltd | Construction | 2019 |
| Gedana Ltd | Information & communication | 2022 |
| Gem-A Strategy Systems Limited | Extraterritorial | 2014 |
| Gemini CLX Limited | Real estate | 2022 |
| GEMINI1 Limited | Real estate | 2019 |
| Gencov Limited | Hospitality | 2017 |
| Generation Seven Ltd | Education | 2023 |
| Genevieve Corbett Design Limited | Professional & scientific | 2023 |
| Genoma Limited | Professional & scientific | 2025 |
| Gensmith Limited | Information & communication | 2023 |
| Gent of Search Ltd | Administrative & support | 2020 |
| Gentilli & Associates Limited | Professional & scientific | 1987 |
| Gentle Shift Healing Ltd | Health & social care | 2026 |
| George Elliott Ltd | Construction | 2026 |
| Georgesofkemptown Limited | Hospitality | 2017 |
| Georgia House Management Company Limited | Households | 2004 |
| Georgia Place Freehold Company Limited | Households | 2021 |
| Gercon Construction Limited | Construction | 2014 |
| GET Consulting Ltd | Professional & scientific | 2024 |
| GET Glazed Ltd | Wholesale & retail | 2022 |
| GFJ Roofing Limited | Construction | 2025 |
| GG-768-510 Limited | Real estate | 2024 |
| GGG Racing Ltd | Arts & recreation | 2025 |
| Ggtx Limited | Information & communication | 2023 |
| GGW Holdings Limited | Administrative & support | 2017 |
| GHC Services Limited | Information & communication | 2024 |
| GHH (TW) Ltd | Real estate | 2021 |
| GHM Contractors Limited | Administrative & support | 2006 |
| Giant Lambda Ltd | Information & communication | 2017 |
| Giap Limited | Professional & scientific | 2010 |
| Gibson Property & Rental Ltd | Real estate | 2020 |
| Gilbert Consulting Services Limited | Professional & scientific | 2013 |
| Gillespie JB Partners LLP | | 2024 |
| Gillett Financial Limited | Administrative & support | 2012 |
| Ginger Analysis Ltd | Information & communication | 2022 |
| Gingerbob Solutions Limited | Other services | 2013 |
| Gingermay Marketing Limited | Professional & scientific | 2010 |
| Gios Consulting Limited | Professional & scientific | 2025 |
| Giraffi Ltd | Information & communication | 2021 |
| Giuseppe Franco Limited | Financial services | 2017 |
| GK Lewis Properties Limited | Real estate | 2026 |
| GK Residential Limited | Real estate | 2023 |
| Gladstone Search Ltd | Administrative & support | 2025 |
| Glendale Chase Limited | Professional & scientific | 2026 |
| Glenister Properties Limited | Real estate | 1976 |
| Glenleigh Park Holdings Ltd | Financial services | 2020 |
| Glide Solutions Limited | Construction | 2006 |
| GLM Properties Ltd | Real estate | 2005 |
| Global Cable Ltd | Professional & scientific | 2016 |
| Global Film Advisers Limited | Information & communication | 2013 |
| Global Real Estate Limited | Professional & scientific | 1998 |
| Global Services and Protection Ltd | Administrative & support | 2023 |
| Global Student Living Ltd | Information & communication | 2020 |
| Global Sustainable Fixed Income Ltd | Professional & scientific | 2020 |
| Global Tamil Media Centre Limited | Professional & scientific | 2021 |
| Global Tree Care Limited | Agriculture & fishing | 2022 |
| Globaleather Ltd | Wholesale & retail | 2020 |
| Globalibra Limited | Extraterritorial | 2015 |
| Globeflex Ltd | Wholesale & retail | 2021 |
| Globp Ltd | Real estate | 2025 |
| Gloster MEP Limited | Construction | 2011 |
| GM Construction & Maintenance Limited | Construction | 2020 |
| GM Construction Specialist Limited | Construction | 2015 |
| GM Jolliffe Ltd | Construction | 2007 |
| GMC2 Ltd | Construction | 2024 |
| GMR Connection Limited | Information & communication | 2005 |
| GNC Accounting Services Ltd | Professional & scientific | 2016 |
| Go EO Ltd | Professional & scientific | 2022 |
| Go for IT Trading Limited | Wholesale & retail | 2013 |
| Go Goosey Ltd | Wholesale & retail | 2021 |
| Go Green Electrical Ltd | Construction | 2014 |
| Go Long! Ltd | Financial services | 2022 |
| Go-Fituk Limited | Arts & recreation | 2016 |
| Go-Green Waste Recycling Limited | Water & waste | 2002 |
| Goalsense Analytics Ltd | Information & communication | 2025 |
| Godden & Grimshaw Limited | Professional & scientific | 2014 |
| Godden Allen Lawn Limited | Professional & scientific | 2015 |
| Godhead Limited | Information & communication | 2021 |
| Gofaone Investments Limited | Health & social care | 2016 |
| Gogo Kebab&Pizza Ltd | Hospitality | 2025 |
| Going UP High Limited | Wholesale & retail | 2023 |
| Gold Cover Insurance Services Limited | Financial services | 2001 |
| Gold Victoria Ltd | Construction | 2018 |
| Golden Castle Noodle and WOK Limited | Hospitality | 2026 |
| Golden Fiber Limited | Wholesale & retail | 2026 |
| Golden Ingot Limited | Professional & scientific | 2011 |