| GO2 Santos Ltd | Wholesale & retail | 2024 |
| Goa-Licious Ltd | Hospitality | 2018 |
| Goat Dog Ltd | Hospitality | 2024 |
| Godsgracechildcare Ltd | Education | 2025 |
| Gold Runners Limited | Transport & logistics | 2025 |
| Goldcrest Digital Limited | Professional & scientific | 2025 |
| Golden Gate Haven Limited | Households | 2024 |
| Golden POT Limited | Transport & logistics | 2023 |
| Golden Serenity Limited | Real estate | 2025 |
| Goldmark Property Limited | Real estate | 2017 |
| Gomti Ltd | Wholesale & retail | 2023 |
| Gona Limited | Wholesale & retail | 2020 |
| Gonuts Food Ltd | Hospitality | 2022 |
| Good ADS & Marketing Ltd | Information & communication | 2026 |
| Goodfind Ltd | Wholesale & retail | 2026 |
| Goodlife Healthcare Services Limited | Health & social care | 2020 |
| Gorsi Construction Ltd | Construction | 2024 |
| Goshanelle Ltd | Manufacturing | 2017 |
| Gosiakay Limited | Transport & logistics | 2025 |
| Govern Security Services Limited | Administrative & support | 2018 |
| GOX Sourcedit Ltd | Wholesale & retail | 2025 |
| GR8 Nite OUT Limited | Hospitality | 2014 |
| Grace City Bible School Ltd | Other services | 2021 |
| Grace Food&Beverages Ltd | Hospitality | 2026 |
| Grace Hair & Beauty Salon Limited | Other services | 2019 |
| Grace Oaks Limited | Real estate | 2020 |
| Graceland Care Home (UK) Limited | Health & social care | 2022 |
| Gracetrial Services Ltd | Public administration | 2022 |
| Gradelift Ltd | Education | 2025 |
| Graduates Turns Professional Academy Limited | Other services | 2024 |
| Grant Sisters Tea House and Cakes Ltd | Hospitality | 2017 |
| Grasnick Ltd | Construction | 2013 |
| Grassrotz Football Academy Limited | Education | 2024 |
| Graverobbers in Plain Sight Ltd | Education | 2025 |
| Great Trading Ltd | Wholesale & retail | 2025 |
| Greater Space Construct Ltd | Construction | 2025 |
| Green Apple Healthcare Services Ltd | Wholesale & retail | 2021 |
| Green Earth Distributions Limited | Wholesale & retail | 2024 |
| Green Handling Ltd | Administrative & support | 2024 |
| Green Lane Local Ltd | Wholesale & retail | 2026 |
| Green Rock EDU Tech Ltd | Education | 2024 |
| Greenacre Square Limited | Real estate | 2023 |
| Greengears Auto Limited | Wholesale & retail | 2024 |
| Greenlane Drycleaners Ltd | Other services | 2019 |
| Greenoak Services Limited | Construction | 2025 |
| Grewal Trading Limited | Wholesale & retail | 2025 |
| Griffts Ltd | Wholesale & retail | 2025 |
| Grig CEB Ltd | Construction | 2020 |
| Grill & Chill Norbury Ltd | Hospitality | 2025 |
| Grill N Chill Ltd | Hospitality | 2026 |
| Grillfather Pizza and Grill Ltd | Hospitality | 2020 |
| Group 2 Social Care Recruitment Agency Ltd | Health & social care | 2023 |
| Grovelands Croydon (Freehold) Limited | Administrative & support | 2008 |
| Growmore Investing Ltd | Real estate | 2024 |
| Grown OUT Marketplace Ltd | Information & communication | 2026 |
| Grvti Recruitment Limited | Administrative & support | 2025 |
| Grwn Ltd | Wholesale & retail | 2019 |
| GS Whole Sale of Fruits and Vegetables Ltd | Wholesale & retail | 2025 |
| Gsafe Plumbing&Heating Exclusive Limited | Construction | 2024 |
| GSK Technical Solutions Ltd | Construction | 2019 |
| Gslogisticsworld Limited | Transport & logistics | 2025 |
| GSR Services London Ltd | Other services | 2014 |
| Gulzar Enterprises Limited | Professional & scientific | 2015 |
| Guri Ltd | Construction | 2022 |
| Gyro Craft Ltd | Hospitality | 2026 |
| H Hashmi Group Limited | Wholesale & retail | 2023 |
| H K Discount Wines Limited | Wholesale & retail | 2004 |
| H Natural Care Ltd | Wholesale & retail | 2022 |
| H&D Applications Ltd | Information & communication | 2025 |
| H.A.D Ventures Ltd | Education | 2024 |
| H.N.K. Consulting Limited | Professional & scientific | 1996 |
| Haala Ltd | Other services | 2019 |
| Habitar Ltd | Real estate | 2018 |
| Habity Homes Ltd | Real estate | 2026 |
| Hafegeneral Ltd | Wholesale & retail | 2025 |
| Haiducul Ltd | Wholesale & retail | 2018 |
| Hair & Cosmatic Ltd | Wholesale & retail | 2015 |
| Hair Regardless Ltd | Other services | 2019 |
| Hakeem Halal Meat Limited | Wholesale & retail | 2026 |
| Halal Wholesaler Ltd | Wholesale & retail | 2025 |
| Halcyon Household Ltd | Administrative & support | 2026 |
| Hallow Spring Care Limited | Administrative & support | 2025 |
| Halton Homes & Gardens Ltd | Construction | 2019 |
| Hamlets Homes Ltd | Real estate | 2023 |
| Handyman Pro MAX Ltd | Construction | 2026 |
| Hardstone Construction Ltd | Construction | 2021 |
| Haren Construction Ltd | Construction | 2025 |
| Harmony Apartments Limited | Real estate | 2016 |
| Hasraco Limited | Other services | 2015 |
| Hassankhel Mobile Ltd | Wholesale & retail | 2024 |
| Haus of Curtains Ltd | Wholesale & retail | 2025 |
| Haute Maintenance Ltd | Wholesale & retail | 2019 |
| Haven Court (Wiltshire Road) Residents Company Limited | Administrative & support | 1983 |
| Havencore Group Ltd | Construction | 2025 |
| Haymaker Consulting Limited | Professional & scientific | 2012 |
| Hazarbuz Accessories Ltd | Wholesale & retail | 2024 |
| HB Loft Conversions Ltd | Construction | 2020 |
| HB Property Development Ltd | Real estate | 2024 |
| HB Sons & Construction Ltd | Construction | 2022 |
| Headstart Elite Assets Ltd | Real estate | 2019 |