| GMO Developments Limited | Professional & scientific | 2023 |
| GMT 0929 Ltd | Transport & logistics | 2015 |
| Gmte Limited | Transport & logistics | 2015 |
| GNC Advisors Ltd | Professional & scientific | 2019 |
| Go Pizza Express Ltd | Hospitality | 2023 |
| Go Print Media Limited | Other services | 2009 |
| Go Two Modelmakers Ltd | Construction | 2023 |
| Gocomparison Ltd | Information & communication | 2025 |
| God's Own Ventures Limited | Administrative & support | 2021 |
| Godwins Properties Ltd | Real estate | 2026 |
| Going Spare Limited | Wholesale & retail | 1983 |
| Gold Mudfish Community Services Limited | Public administration | 2023 |
| Gold Seal International Trading Company Ltd | Wholesale & retail | 1996 |
| Gold Standard Innovation Limited | Construction | 2019 |
| Goldcrest Commercial Ltd | Real estate | 2001 |
| Goldcrest Custom Homes Limited | Construction | 2016 |
| Goldcrest Homes Ltd | Extraterritorial | 2011 |
| Golden Kebab House Ltd | Hospitality | 2019 |
| Golden Key Locksmith Ltd | Other services | 2018 |
| Golden Pineapple Consulting Limited | Professional & scientific | 2021 |
| Goldfield Properties Limited | Administrative & support | 2000 |
| Goldfinch Group Services Limited | Construction | 2004 |
| Goldhill Systems Limited | Administrative & support | 2015 |
| Goldseal Cars Limited | Wholesale & retail | 2015 |
| Goldtop International Ltd | Wholesale & retail | 2017 |
| Golf & Travel France Limited | Administrative & support | 2017 |
| Golf Holiday Tours Ltd | Extraterritorial | 2021 |
| Golf in the Community CIC | Other services | 2024 |
| Goliath Mouldings Limited | Manufacturing | 2020 |
| Goni and Partners Limited | Construction | 2014 |
| Good Dog Company Ltd | Extraterritorial | 2024 |
| Goodall Barnard Construction Limited | Construction | 1970 |
| Goodall Lettings Limited | Real estate | 2017 |
| Goodwill Associates Ltd | Other services | 2026 |
| Googlewizard Limited | Information & communication | 2020 |
| Gordon Services Ltd. | Real estate | 2007 |
| Gosav Construction Limited | Construction | 2020 |
| Gough Square Chambers Limited | Professional & scientific | 1993 |
| Gouranga (Transport) Ltd | Transport & logistics | 2021 |
| GP Hotel Limited | Hospitality | 2014 |
| GP Windows Essex LLP | | 2016 |
| GPB Construction Limited | Construction | 1997 |
| GPS Building Ltd | Construction | 2025 |
| Grace & Co. Property Management Ltd | Households | 2006 |
| Gracejohn Legal Practice Ltd | Professional & scientific | 2022 |
| Grafik Limited | Professional & scientific | 2006 |
| Grafton Industry Services Ltd | Professional & scientific | 2023 |
| Graham Saggers Fine Engraving Limited | Arts & recreation | 2015 |
| Grahamston Iron Company (1993) Limited | Manufacturing | 1992 |
| Grand Bisco Limited | Professional & scientific | 2018 |
| Grandmaster Finance Limited | Financial services | 2017 |
| Grant Coaching & Consulting Limited | Professional & scientific | 2013 |
| Grant Hawtree Interiors Limited | Construction | 2020 |
| Granville Property Limited | Real estate | 2017 |
| Graphic Evidence Limited | Professional & scientific | 2001 |
| Graphic International Display Limited | Professional & scientific | 1970 |
| Graphic International Holdings Ltd | Financial services | 2023 |
| Graphite Consulting Ltd | Administrative & support | 2016 |
| Gratefame Limited | Wholesale & retail | 1979 |
| Gravita Essex Limited | Administrative & support | 2009 |
| Gravity Civil and Structural Engineering Ltd | Construction | 2025 |
| Gray Hanger Ltd | Wholesale & retail | 2024 |
| Grayers Graphics Limited | Professional & scientific | 2016 |
| Grayers Group Limited | Real estate | 2022 |
| Grays Car & Motorcycle MOT Centre Ltd. | Wholesale & retail | 2014 |
| Great British Stone Limited | Construction | 2018 |
| Great Canney Developments Limited | Real estate | 2016 |
| Great Danes YFC Ltd | Arts & recreation | 2016 |
| Great Eastern Windows Ltd | Construction | 2017 |
| Great MAI Ltd | Hospitality | 2019 |
| Great Ropers Storage Ltd. | Administrative & support | 2001 |
| Great Walthambury Stores Limited | Wholesale & retail | 2023 |
| Great Warley Limited | Health & social care | 2026 |
| Great Warley Prep School Ltd | Education | 2025 |
| Great West House Limited | Real estate | 1996 |
| Great White Capital Limited | Professional & scientific | 2026 |
| Great Wolf Ltd | Transport & logistics | 2016 |
| Green Dragon Shenfield Limited | Hospitality | 2020 |
| Green Echo Consulting Limited | Professional & scientific | 2025 |
| Green Light Compliance Limited | Professional & scientific | 2008 |
| Green Moon Tech Ltd | Information & communication | 2020 |
| Green Mountain Services Limited | Administrative & support | 2009 |
| Green Panels Ltd | Construction | 2021 |
| Green People London Limited | Wholesale & retail | 2019 |
| Green Store (Essex) Ltd | Wholesale & retail | 2011 |
| Green Tornado Ltd | Other services | 2006 |
| Greenacre Capital (CGW) Limited | Hospitality | 2017 |
| Greenacre Developers Ltd | Construction | 2022 |
| Greener Garden Rooms Ltd | Construction | 2015 |
| Greenfield Exploration Limited | Financial services | 2006 |
| Greenfields Care Services Limited | Health & social care | 2023 |
| Greenfone Limited | Information & communication | 2020 |
| Greenhall Consultancy Ltd | Professional & scientific | 2014 |
| Greenhouse Acquisitions Limited | Real estate | 2023 |
| Greenhouse Marketing Services Limited | Professional & scientific | 2007 |
| Greenleaf Ventures Limited | Real estate | 2017 |
| Greenside Construction Ltd | Construction | 2024 |
| Greensur Consulting Ltd | Professional & scientific | 2023 |
| Greenwich Millennium Village Limited | Construction | 1998 |
| Greenwich Systems Ltd | Information & communication | 2026 |