| Gemstone Enterprise Limited | Wholesale & retail | 2019 |
| George & a Ltd | Construction | 2016 |
| Georgetown Kitchen Ltd | Hospitality | 2016 |
| Gharr Lettings Limited | Wholesale & retail | 2023 |
| Gibson Bidco Limited | Financial services | 2016 |
| Gibson Propco Limited | Financial services | 2016 |
| Gibson Topco Limited | Financial services | 2016 |
| Giglane Management Company Limited | Households | 1980 |
| GIX Ltd | Transport & logistics | 2022 |
| GK Technology Ltd | Construction | 2017 |
| Global Domiciliary Care Ltd | Health & social care | 2022 |
| Global Halal Tourism Organisation Private Limited | Information & communication | 2019 |
| Global Links London Ltd | Transport & logistics | 2026 |
| Global Postmart Ltd | Wholesale & retail | 2026 |
| Globallex Limited | Professional & scientific | 2025 |
| Globe B Limited | Wholesale & retail | 2014 |
| Glory Medical and Healthcare Services Ltd | Health & social care | 2010 |
| Glowsales Ltd | Wholesale & retail | 2025 |
| Glpr Carpentry Ltd | Construction | 2024 |
| GMK Legal Limited | Professional & scientific | 2025 |
| GMK Property Group Ltd | Real estate | 2025 |
| GN Builders and Maintenance Ltd | Construction | 2022 |
| Go to Glow Ltd | Information & communication | 2025 |
| GOKATA18 Ltd | Manufacturing | 2025 |
| Goldworth Properties Ltd | Real estate | 2015 |
| Golfe Group Limited | Construction | 2016 |
| Good Health Technology Ltd | Professional & scientific | 2024 |
| Goranga Tech Ltd. | Information & communication | 2017 |
| Gorgeous Nails (Chigwell) Limited | Other services | 2026 |
| Gotca Ltd | Manufacturing | 2026 |
| Gowri & Gaya Ltd | Real estate | 2022 |
| Grasshopper Displays Holdings Ltd | Financial services | 2025 |
| Gravel Lane Automotives Ltd | Wholesale & retail | 2025 |
| Great Berry Developments Limited | Real estate | 2017 |
| Greattimber Ltd | Wholesale & retail | 2020 |
| Green Acre Homes Ltd | Construction | 2024 |
| Greenacres Care Centre Limited | Health & social care | 2013 |
| Greener Pastures Construction Limited | Construction | 2019 |
| Greenleaf Assessments Ltd | Professional & scientific | 2013 |
| Greenleaf Groceries Ltd | Wholesale & retail | 2026 |
| Greenscape Compliance Limited | Other services | 2025 |
| Greenview (Chigwell) Management Company Limited | Households | 2025 |
| Griffith Legal Services Ltd | Professional & scientific | 2021 |
| Grind Group and Partners Limited | Other services | 2021 |
| Ground Estates Limited | Real estate | 2026 |
| Groundkey Limited | Construction | 2022 |
| Groundoak Limited | Real estate | 2026 |
| Groundprop Limited | Real estate | 2023 |
| Grow Recipe Ltd | Wholesale & retail | 2025 |
| GSV Property Limited | Real estate | 2025 |
| GTM Enterprise Limited | Transport & logistics | 2018 |
| Guchi’S Boutique Ltd | Wholesale & retail | 2025 |
| Gulbato Limited | Wholesale & retail | 2025 |
| Guru Ramdas Limited | Real estate | 2016 |
| H Brothers Steel Fixing Ltd | Construction | 2018 |
| H Foods Limited | Manufacturing | 2025 |
| H R Bargains Ltd | Wholesale & retail | 2023 |
| H&K Ltd | Construction | 2018 |
| H&T Experts Limited | Professional & scientific | 2025 |
| H&U Brothers Ltd | Real estate | 2025 |
| H&Z Consultants Limited | Professional & scientific | 2015 |
| H.S. Property Developments Limited | Real estate | 2001 |
| Hachnasat Orchim Services Ltd | Transport & logistics | 2025 |
| Hair @ 207 Limited | Other services | 2016 |
| Hajratech Limited | Information & communication | 2013 |
| Hampstead Heath Luxury Development Limited | Real estate | 2023 |
| Haniya T Ltd | Real estate | 2024 |
| Hannantech Ltd | Wholesale & retail | 2025 |
| Hanubites Ltd | Wholesale & retail | 2025 |
| Happy Crate Limited | Wholesale & retail | 2025 |
| Happy Street Limited | Information & communication | 2022 |
| HAR Builder Ltd | Construction | 2021 |
| Harikrishna Healthcare Limited | Public administration | 2024 |
| Harmony Holdings Private Limited | Information & communication | 2020 |
| Harris Capital Ltd | Real estate | 2019 |
| Harris International Holdings Ltd | Financial services | 2019 |
| Harrisons Trade Direct Ltd | Construction | 2015 |
| Harry Butler Property Ltd | Real estate | 2022 |
| Hart Buildings Limited | Real estate | 2023 |
| Harva Properties Ltd | Real estate | 2024 |
| Hasnem Limited | Transport & logistics | 2011 |
| Hastings Court Ltd | Health & social care | 2006 |
| Hauuah Limited | Administrative & support | 2012 |
| Havengore House Residential Care Home Limited | Real estate | 2010 |
| Havershaw Limited | Hospitality | 1972 |
| Hayat Diagnostic Services Ltd | Health & social care | 2023 |
| Hayat Heights Limited | Real estate | 2024 |
| Haysel Print Services | | 1994 |
| Haythem Ltd | Health & social care | 2017 |
| Hazelwood Rock Limited | Professional & scientific | 2003 |
| HB Contracting Group Ltd | Construction | 2025 |
| HCN Development Ltd | Real estate | 2023 |
| Healing Horizons Ltd | Other services | 2015 |
| Healthcare Solutions Global Ltd | Health & social care | 2018 |
| Healthspauk Ltd | Health & social care | 2024 |
| Heart 2 Heart Support Ltd | Health & social care | 2024 |
| Hearts and Haven Childcare Ltd | Health & social care | 2023 |
| Heather Auto Ltd | Wholesale & retail | 2022 |
| Heritage Property London Limited | Real estate | 2014 |
| Herongate Developments Ltd | Administrative & support | 2015 |