| Golden Delight Highams Park Ltd | Hospitality | 2024 |
| Golden Globe Energy Services Ltd | Professional & scientific | 2014 |
| Golden Globe Holding Limited | Real estate | 2020 |
| Golden Globe Investment Management Ltd | Real estate | 2024 |
| Golden Globe Merchants Limited | Construction | 2011 |
| Golden Goose Investments Ltd | Real estate | 2013 |
| Golden Goosey Limited | Professional & scientific | 2017 |
| Goldenearth Properties UK Limited | Real estate | 2018 |
| Goldsmith's ROW (E2) RTM Company Limited | Households | 2025 |
| Goldsmith's ROW Management Ltd | Real estate | 2013 |
| Goldtree Care Ltd | Wholesale & retail | 2010 |
| Gollan Design Ltd | Professional & scientific | 2024 |
| Golocal SEO Ltd | Professional & scientific | 2024 |
| Gonkaro Ltd | Wholesale & retail | 2025 |
| Good News Pest Solutions Ltd | Administrative & support | 2023 |
| Good to Give Limited | Information & communication | 2010 |
| Goodwin Enterprises Limited | Extraterritorial | 2010 |
| Goosmaan Ltd | Information & communication | 2011 |
| Gordon's Builders and Consultants Limited | Construction | 2002 |
| Goulds Homeopathic Limited | Wholesale & retail | 2013 |
| Gouser Tech Ltd | Information & communication | 2017 |
| Governance and Compliance Consulting Limited | Administrative & support | 2022 |
| Goyd Ltd | Wholesale & retail | 2018 |
| GP Practice Manager Services Ltd | Health & social care | 2015 |
| GPP Rentals Limited | Real estate | 2018 |
| GQ Family Holdings Ltd | Financial services | 2025 |
| GR Contractor Ltd | Construction | 2023 |
| GR Projects Limited | Construction | 2017 |
| Grace Medical Solutions Limited | Information & communication | 2014 |
| Grace Removals Ltd | Transport & logistics | 2018 |
| Grace System Services Limited | Information & communication | 2010 |
| Gracella Properties Ltd | Real estate | 2023 |
| Graftas Group Limited | Information & communication | 2025 |
| Grain Timbers Limited | Wholesale & retail | 2018 |
| Grapeseed Limited | Real estate | 1992 |
| Gravesy Productions Ltd | Information & communication | 2020 |
| Gravy Crew Limited | Administrative & support | 2014 |
| Grayhurst Services Ltd | Information & communication | 2021 |
| Grays Inn Road Express Ltd | Wholesale & retail | 2025 |
| GRD Construction Ltd | Construction | 2026 |
| Great Waterproofing Limited | Construction | 2022 |
| Great Way Group Ltd | Professional & scientific | 2012 |
| Greater Impacts Holdings Limited | Financial services | 2020 |
| Greater Impacts Limited | Professional & scientific | 2020 |
| Greater Impacts Property Investments Limited | Real estate | 2020 |
| Greatspan Limited | Construction | 2006 |
| Greaves Select Property Services Limited | Real estate | 2017 |
| Greek Food SW Limited | Hospitality | 2024 |
| Green & Wharf Properties Limited | Administrative & support | 2015 |
| Green Genesis Ltd | Professional & scientific | 2015 |
| Green Shoots Ecology Ltd. | Professional & scientific | 2010 |
| Greenacre (Thanet) Limited | Construction | 2016 |
| Greenfinch Housing Limited | Real estate | 2017 |
| Greenmantle Care Home Limited | Health & social care | 2016 |
| Greenprop Limited | Professional & scientific | 2002 |
| Greenstreet Property Limited | Real estate | 2017 |
| Greenwood Flats (Redbridge) Limited | Households | 1972 |
| Greenwood Partners LLP | | 2016 |
| Greystones Investments Ltd | Construction | 2010 |
| Griffin Surveying Ltd | Professional & scientific | 2024 |
| Griffite Finance Co. Limited | Real estate | 1958 |
| Grimstoneoaks Ltd | Real estate | 2025 |
| Gritt Media Ltd | Administrative & support | 2025 |
| Groom Dog City Ltd | Other services | 2014 |
| Group Partners Limited | Professional & scientific | 2000 |
| Grove Lane Decoration Limited | Administrative & support | 2025 |
| Grown Diamonds Ltd | Manufacturing | 2023 |
| GRT Consulting Limited | Professional & scientific | 2014 |
| GS Architectural Services Ltd | Professional & scientific | 2012 |
| GSF Building Solutions Limited | Construction | 2023 |
| GSV Capital Assets Limited | Administrative & support | 2016 |
| GT Heritage Limited | Wholesale & retail | 2016 |
| GTB Building Services Limited | Construction | 2020 |
| Gthholdings Limited | Manufacturing | 2023 |
| GTO Films Limited | Information & communication | 2009 |
| Guardian Angel Accessories Ltd | Wholesale & retail | 2022 |
| Guarding Group Ltd | Administrative & support | 2019 |
| Guemsujeo Ltd | Hospitality | 2002 |
| Gulf Security Group Ltd | Administrative & support | 2022 |
| Gulf Wind Technology Ltd | Professional & scientific | 2023 |
| Guni Car Valet Limited | Administrative & support | 2007 |
| Gunyah Homes Limited | Health & social care | 2024 |
| Guru Dave Limited | Administrative & support | 2015 |
| Guru Design Studio Limited | Administrative & support | 2023 |
| Gute Ltd | Construction | 2005 |
| Gwynne Court Residents Association Limited | Administrative & support | 2000 |
| Gyewhyro Enforcement Limited | Administrative & support | 2024 |
| Gymgen Ltd | Wholesale & retail | 2025 |
| H & a Limited | Real estate | 2024 |
| H & Company Consulting Ltd | Arts & recreation | 2023 |
| H & M Security Services Limited | Administrative & support | 2000 |
| H a Install Ltd | Construction | 2017 |
| H E Make UP Ltd | Other services | 2015 |
| H Sindha Limited | Professional & scientific | 2013 |
| H&B 712 Limited | Hospitality | 2021 |
| H&D Resources Ltd | Information & communication | 2016 |
| H&Z Enterprise Ltd | Wholesale & retail | 2020 |
| H.M.I Investments Limited | Administrative & support | 2013 |
| H.Todorovv Limited | Transport & logistics | 2015 |
| HAA NA UK Ltd | Hospitality | 2025 |