| GNR Creative Limited | Wholesale & retail | 2024 |
| Go Procouriers Limited | Transport & logistics | 2023 |
| Go Wild With US UK C.I.C. | Other services | 2016 |
| Goat Repair Centre Ltd | Wholesale & retail | 2023 |
| Godalming Kebab Limited | Hospitality | 2021 |
| Gold Standard Property Solutions Ltd | Professional & scientific | 2019 |
| Golden Alliance Care Limited | Health & social care | 2024 |
| Golden Beer ARK Ltd. | Hospitality | 2017 |
| Goldex DRY Cleaners Limited | Other services | 2026 |
| Goldfox Estates Ltd | Real estate | 2011 |
| Goldn DRY Cleaners Limited | Other services | 2019 |
| Gomut Ltd | Transport & logistics | 2023 |
| Good Finish Ltd | Construction | 2025 |
| Good Value Foods Ltd | Hospitality | 2023 |
| Goods Direct Limited | Wholesale & retail | 2018 |
| Goodwise Management Ltd | Professional & scientific | 2025 |
| Goodyear Graphics Ltd | Professional & scientific | 2015 |
| Gordon Gray Estate Agents Limited | Real estate | 2008 |
| Gorgeous Experiences Ltd | Administrative & support | 2025 |
| Goshawk Court Sanderstead Limited | Real estate | 2024 |
| Governance Essentials Limited | Information & communication | 2018 |
| Gp-Loc Holdings Limited | Real estate | 2022 |
| Gp-Loc Limited | Health & social care | 2013 |
| GP-LOC2 Ltd | Financial services | 2025 |
| GPT Support Solutions Ltd | Health & social care | 2024 |
| GR Advisory Ltd | Professional & scientific | 2025 |
| GR Capital Assets Ltd | Real estate | 2024 |
| Grace Support Homes | Health & social care | 2021 |
| Graceland Social Care Services Limited | Health & social care | 2000 |
| Graces & Co Wholesale Limited | Information & communication | 2022 |
| Graces Homes Ltd | Real estate | 2024 |
| Grada Construction Ltd | Construction | 2019 |
| Grand Property Investments Limited | Real estate | 2020 |
| Graphic Info Systems Ltd | Information & communication | 2010 |
| Gray Estates & Developments Limited | Construction | 2017 |
| Gray Star Sports Limited | Manufacturing | 2023 |
| Gray Tech Official Limited | Information & communication | 2023 |
| Grayline Services Limited | Transport & logistics | 2015 |
| Great Eelam Ltd | Wholesale & retail | 2024 |
| Greater London Lawyers Limited | Professional & scientific | 2021 |
| Greek POT Catering Ltd | Wholesale & retail | 2023 |
| Green Care and Support Ltd | Health & social care | 2021 |
| Green Croydon | Arts & recreation | 2013 |
| Greenchip Consulting Ltd | Professional & scientific | 2020 |
| Greendale Court Management Limited | Households | 1971 |
| Greenglade Court Ltd | Real estate | 2025 |
| Greenstead Properties Ltd | Real estate | 2025 |
| Greentech Accounting Ltd | Professional & scientific | 2024 |
| Greenwood Associates London Ltd | Real estate | 2018 |
| Greville Trustees Limited | Extraterritorial | 1987 |
| GRID3 Ltd | Wholesale & retail | 2022 |
| Groom Lounge Barbers Limited | Other services | 2020 |
| Growclip Ltd | Information & communication | 2025 |
| Growth Today Ltd | Information & communication | 2026 |
| GSK Agiz VE DIS Sagligi HIZ Limited | Administrative & support | 2025 |
| Guarantee Care Services Ltd | Real estate | 2017 |
| Guardian Saints Community Interest Company | Information & communication | 2014 |
| Guchavediti Properties Limited | Real estate | 2020 |
| Guided Growth Consultancy Limited | Professional & scientific | 2025 |
| Guildfordrheumatology Ltd | Health & social care | 2013 |
| Gulnaz Catering Limited | Hospitality | 2024 |
| Guryel & Co Limited | Professional & scientific | 2011 |
| Guryel Property Partnership Limited | Real estate | 2022 |
| GV Portfolio Ltd | Real estate | 2013 |
| GY Grooming Limited | Other services | 2018 |
| H Anwar QS Limited | Professional & scientific | 2024 |
| H&K - RS Construction Ltd | Construction | 2015 |
| H&S Housing Solutions Limited | Households | 2024 |
| H20 Wiser Services Limited | Construction | 2013 |
| H2O Plumbing and Mechanical Ltd | Other services | 2022 |
| H4U (London) Limited | Real estate | 2016 |
| HA Innovations Ltd | Wholesale & retail | 2026 |
| Hadi Travel Ltd | Transport & logistics | 2021 |
| Hadley and Jones Ltd | Information & communication | 2018 |
| HAI International Limited | Information & communication | 2026 |
| Hakan Bozdag Music Limited | Arts & recreation | 2015 |
| Hallett & Akerman Developments Ltd | Construction | 2023 |
| Hallways Estates Limited | Real estate | 2017 |
| Hamelin House Management Limited | Households | 1983 |
| Hamptans Limited | Professional & scientific | 2010 |
| Hamsey Green Barber Ltd | Other services | 2026 |
| Hamsey Greens Ltd | Manufacturing | 2021 |
| Hanane Pharm Ltd | Health & social care | 2009 |
| HANAS6 Ltd | Information & communication | 2018 |
| Hanastudio Ltd | Wholesale & retail | 2025 |
| Handbag Fashion Limited | Wholesale & retail | 2018 |
| Hannah James Estates Limited | Real estate | 2022 |
| Happy Homes Design and Construction Ltd | Construction | 2021 |
| Haranco Limited | Real estate | 2025 |
| Harbledown Limited | Extraterritorial | 2013 |
| Harbor Care Services Ltd | Health & social care | 2025 |
| Harding & Bloom Ltd | Wholesale & retail | 2025 |
| Harendra Kapur Ltd | Administrative & support | 2021 |
| Harestone Wealth Management Ltd | Financial services | 2011 |
| Harris's Specialist Footwear Ltd | Wholesale & retail | 2011 |
| Harry Mundy Ltd | Manufacturing | 2014 |
| Harteisw Ltd. | Health & social care | 2025 |
| Harvey Contracts (South East) Ltd | Construction | 2012 |
| Hattrill & Co Limited | Administrative & support | 2019 |
| Havana Tanning Lounge Ltd | Other services | 2010 |