| G. Buckingham & Company Limited | Professional & scientific | 1973 |
| G.D Construct (ST. Allbans) Ltd | Construction | 2024 |
| G.J.S. Brickwork Ltd | Construction | 2018 |
| G10 Investments Ltd | Real estate | 2021 |
| G11 Finance Services Ltd | Financial services | 2025 |
| G2HK Ltd | Real estate | 2024 |
| G3 Transport Ltd | Transport & logistics | 2025 |
| G9 Properties Ltd | Real estate | 2021 |
| GA Logistics Services Ltd | Transport & logistics | 2026 |
| Gaasbaaskapaas Limited | Hospitality | 2025 |
| Gaba Fruits & VEG Ltd | Wholesale & retail | 2025 |
| Gaba Global Ltd | Wholesale & retail | 2025 |
| Gadget Empire Ltd | Manufacturing | 2024 |
| Gadid Logistics Ltd | Transport & logistics | 2016 |
| GAG Corporation Ltd | Transport & logistics | 2025 |
| Gagan Construction Ltd | Construction | 2019 |
| Gagan Estate Ltd | Real estate | 2017 |
| Gagan Haulage Ltd | Transport & logistics | 2026 |
| Gagan Mengi Ltd | Financial services | 2022 |
| Gaia Harmony Ltd | Wholesale & retail | 2024 |
| Galaj Engineers Ltd | Professional & scientific | 2017 |
| Galaxy Consultants & Materials Technology Ltd | Construction | 2022 |
| Galaxy Corporation (UK) Limited | Hospitality | 2005 |
| Galaxy Finance Ltd | Financial services | 2019 |
| Galaxy Finance Specialist Ltd | Financial services | 2023 |
| Galaxy GNS Accountants Ltd | Information & communication | 2012 |
| Galaxy Media Ltd | Professional & scientific | 2021 |
| Galaxy NPS Ltd | Professional & scientific | 2026 |
| Galaxy Products Ltd | Wholesale & retail | 2025 |
| Galaxy Real Estate Limited | Real estate | 2016 |
| Galaxy Water Filters Ltd | Water & waste | 2024 |
| Galaxyslidingdoors Ltd | Manufacturing | 2024 |
| Game Measure Ltd | Hospitality | 2022 |
| Gamma Investments Ltd | Real estate | 2018 |
| Gamuley Ltd | Wholesale & retail | 2023 |
| Ganga Properties Ltd | Real estate | 2020 |
| Ganger Enterprises Limited | Health & social care | 2024 |
| Garad Graphics Ltd | Information & communication | 2025 |
| Garages 4 U Ltd | Wholesale & retail | 2024 |
| Garanug Taxi Services Ltd | Transport & logistics | 2021 |
| Garcha Transport Heathrow Limited | Transport & logistics | 2017 |
| Garden Nest Ltd | Administrative & support | 2025 |
| Garg & Sons Commercial Ltd | Real estate | 2022 |
| Garg & Sons Development Ltd | Construction | 2020 |
| Garg & Sons Enterprises Limited | Wholesale & retail | 2016 |
| Garg & Sons Investments Limited | Real estate | 2017 |
| Garry & Brothers Limited | Wholesale & retail | 2021 |
| Garry & Brothers Properties Ltd | Real estate | 2025 |
| Garry Carpets and Flooring Limited | Wholesale & retail | 2025 |
| Garry Tattoos Ltd | Other services | 2018 |
| Gary's Construction Ltd | Construction | 2014 |
| Gary's Properties Ltd | Real estate | 2023 |
| Gaspower Plumbing & Heating Ltd | Professional & scientific | 2015 |
| Gate to Care Limited | Health & social care | 2018 |
| Gates&Automation Limited | Manufacturing | 2006 |
| Gateway Corporation Limited | Hospitality | 2023 |
| Gatnew Ltd | Financial services | 2019 |
| Gaurav Gill Hairdresser Ltd | Other services | 2024 |
| Gavy Construction Limited | Construction | 2023 |
| Gaware Properties Limited | Real estate | 2025 |
| Gayatri Capital Limited | Financial services | 2023 |
| GAZ Corporation Ltd | Wholesale & retail | 2020 |
| Gazelle UK Holdings Ltd | Professional & scientific | 2023 |
| GB Frontline Ltd | Wholesale & retail | 2020 |
| GB Group of Companies Ltd | Other services | 2026 |
| GB London Properties Ltd | Construction | 2024 |
| GB Private Limited | Real estate | 2018 |
| GB Strong Ltd | Construction | 2025 |
| GB Travels Ltd | Transport & logistics | 2024 |
| Gblr Services Limited | Administrative & support | 2026 |
| GC Consulting London Limited | Professional & scientific | 2019 |
| GC Valley Properties Ltd | Real estate | 2021 |
| GCC Construction Services Limited | Construction | 2008 |
| GCP Investment Ltd | Real estate | 2023 |
| GD Homes Ltd | Households | 2023 |
| GD Property Group Limited | Real estate | 2025 |
| GD Tuitions Ltd | Education | 2021 |
| Gdentch Ltd | Wholesale & retail | 2025 |
| Gdih First Response & Security Solutions Ltd | Wholesale & retail | 2013 |
| GDM International Ltd | Hospitality | 2022 |
| GDS Trainings Ltd | Education | 2024 |
| GE Fitness Group Ltd | Manufacturing | 2016 |
| Gearbox Solutions Limited | Wholesale & retail | 2017 |
| Gearox Motors Limited | Wholesale & retail | 2018 |
| Gearsum Ltd | Wholesale & retail | 2026 |
| Geca Construction Ltd | Construction | 2010 |
| Gedit Ltd | Information & communication | 2022 |
| GEE EMM Capital Ltd | Real estate | 2019 |
| Geekintime Limited | Information & communication | 2024 |
| Gega Star Builders Ltd | Construction | 2019 |
| Gemini Distributor Ltd | Wholesale & retail | 2002 |
| Gemini Universal Services Ltd. | Administrative & support | 2015 |
| Gems Electrical Ltd | Energy | 2010 |
| Gemstones Group Limited | Construction | 2017 |
| Gemstones Town Ltd | Wholesale & retail | 2026 |
| Gemtrix IT Consulting Ltd | Information & communication | 2025 |
| Genco Construction Group Ltd | Construction | 2024 |
| General Food Trading Limited | Wholesale & retail | 2024 |
| General Foods Wholesale Ltd | Wholesale & retail | 2025 |
| General Store & Offlicence Ltd | Wholesale & retail | 2025 |