| Goyo Analytics Ltd | Professional & scientific | 2024 |
| GP Dinner Limited | Hospitality | 2024 |
| GP Practice Solutions Ltd | Professional & scientific | 2017 |
| GPC Group Limited | Administrative & support | 2007 |
| GPM Build Ltd | Construction | 2019 |
| GR Architecture Ltd | Professional & scientific | 2016 |
| Grace Notes Limited | Arts & recreation | 1984 |
| Grafton Court (Finchley Road) Management Company Limited | Households | 2009 |
| Gramtech Associates Limited | Wholesale & retail | 1987 |
| Granbazaar Ltd | Wholesale & retail | 2012 |
| Grand Computers Ltd | Wholesale & retail | 2008 |
| Grand Studio Limited | Wholesale & retail | 2023 |
| Grand View Entertainments Limited | Other services | 2020 |
| Grandview Star Ltd | Hospitality | 2025 |
| Granito London Limited | Wholesale & retail | 2009 |
| Grant View Limited | Hospitality | 2023 |
| Gratia DEI London Limited | Real estate | 2024 |
| Graves Electrical Limited | Construction | 2024 |
| Grayton FOX Recruitment Ltd | Administrative & support | 2026 |
| Grcmethods Ltd | Professional & scientific | 2019 |
| Great Nice Beauty Co., Ltd. | Extraterritorial | 2016 |
| Green Ancher Engineering Consulting Co., Ltd | Wholesale & retail | 2019 |
| Green Block Global Ltd | Professional & scientific | 2021 |
| Green GAS Heating and Plumbing Ltd | Construction | 2025 |
| Green Joy Garden Maintenance Ltd | Administrative & support | 2024 |
| Green Key Estates Ltd | Real estate | 2025 |
| Green Leaf Tree Care Ltd. | Agriculture & fishing | 2009 |
| Green Medical Imaging Limited | Health & social care | 2021 |
| Green Route Supplies Limited | Wholesale & retail | 2025 |
| Greene Building Services Limited | Construction | 2015 |
| Greenfield Properties Management Ltd | Real estate | 2021 |
| Greengate Studios Limited | Other services | 2015 |
| Greengauge UK Ltd | Manufacturing | 2019 |
| Greenhill Residential Ltd | Real estate | 2021 |
| Greenstone Projects Limited | Administrative & support | 2017 |
| Greenways Solutions Limited | Construction | 2012 |
| Greenwich Fire Solutions (UK) Limited | Professional & scientific | 2009 |
| Greenwood Veterinary Clinic Ltd | Professional & scientific | 2009 |
| Greenwood Veterinary Ltd | Financial services | 2022 |
| Greycote Place Management Company Ltd | Real estate | 2022 |
| Grind City London Limited | Wholesale & retail | 2025 |
| Grithic Limited | Administrative & support | 2025 |
| Grofy Limited | Wholesale & retail | 2021 |
| Grosvenor Sterling Group Limited | Real estate | 2018 |
| Group Activation Ltd | Health & social care | 2020 |
| Grove Cleaning Ltd | Administrative & support | 2020 |
| Grovers Stores UK Ltd | Other services | 2020 |
| Grovewell Leisure Ltd | Administrative & support | 2025 |
| Growth Vertical Ltd | Professional & scientific | 2021 |
| Growthworks 360 Ltd | Professional & scientific | 2020 |
| Gryncek Construction Ltd | Construction | 2017 |
| GS Rental Properties Limited | Real estate | 2022 |
| GS Training & Recruitment Ltd | Administrative & support | 2008 |
| GSA Services Ltd | Construction | 2018 |
| GSB Global Ltd | Professional & scientific | 2019 |
| GSB Marine Ltd | Administrative & support | 2023 |
| Gtpp Limited | Real estate | 2024 |
| Guangdong Guangdeng Metal Co., Ltd. | Administrative & support | 2021 |
| Guangzhou Elite International Co., Ltd | Wholesale & retail | 2024 |
| Guangzhou IDO Bridal Lace Co., Ltd | Wholesale & retail | 2023 |
| Guangzhou Shirley Trading Co., Ltd | Wholesale & retail | 2023 |
| Guangzhou the One Bride Co., Ltd | Wholesale & retail | 2023 |
| Guangzhou U Like Industrial Co., Ltd | Wholesale & retail | 2023 |
| Guangzhou Xiaobang Trading Co., Ltd | Wholesale & retail | 2023 |
| Guangzhou Xuanqi Cbec Co., Ltd | Administrative & support | 2023 |
| Guangzhou Yefeng Garment Co., Ltd | Wholesale & retail | 2025 |
| Guardian Parts Limited | Wholesale & retail | 2026 |
| Guest Lite Ltd | Professional & scientific | 2012 |
| Guja Capital Limited | Financial services | 2024 |
| Gulab Limited | Hospitality | 1983 |
| Gulf International UK Ltd | Wholesale & retail | 2024 |
| Gulolo Ltd | Hospitality | 2023 |
| Guncraft Limited | Wholesale & retail | 2012 |
| Gurbuz 55 Ltd | Real estate | 2024 |
| Gurung Residence Ltd | Real estate | 2022 |
| Guskar Ltd | Hospitality | 2024 |
| GV Strategic Food Solutions Ltd | Professional & scientific | 2026 |
| GWS Roofing Ltd | Construction | 2003 |
| GXW Ltd | Hospitality | 2022 |
| Gymfit 247 Ltd | Arts & recreation | 2021 |
| Gymfit 365 Ltd | Arts & recreation | 2024 |
| Gynaejoy Ltd | Health & social care | 2025 |
| Güzel London Ltd | Wholesale & retail | 2019 |
| H & F Homes Ltd | Real estate | 2020 |
| H & F Renovations Ltd | Real estate | 2019 |
| H & J World Enterprises Limited | Administrative & support | 2022 |
| H & K Industries Ltd | Wholesale & retail | 2024 |
| H a Cockman Ltd | Wholesale & retail | 2023 |
| H Specialist Cars Ltd | Wholesale & retail | 2020 |
| H&B Promotional Limited | Administrative & support | 2023 |
| H&S Ventures Ltd | Wholesale & retail | 2026 |
| H&Z Industry Co., Ltd | Administrative & support | 2019 |
| H13TWO Limited | Real estate | 2023 |
| H8MES Limited | Real estate | 2023 |
| Haarf Limited | Professional & scientific | 2024 |
| Hage Construction Ltd | Construction | 2025 |
| Haida Machinery Co., Ltd | Extraterritorial | 2021 |
| Haider House School Ltd | Education | 2025 |
| Hailey Nails & Beauty Ltd | Other services | 2025 |
| Haim BIO Ltd | Professional & scientific | 2020 |