| Ghanavati Locum Limited | Health & social care | 2015 |
| Ghani Properties NE Ltd | Real estate | 2024 |
| Ghazi Enterprise Ltd | Wholesale & retail | 2022 |
| Ghazi International Plastic Company Ltd | Wholesale & retail | 2025 |
| Ghbuildingservices Ltd | Construction | 2026 |
| Gherghel Service Ltd | Wholesale & retail | 2025 |
| GHI Ltd | Professional & scientific | 2001 |
| Ghias Holdings Ltd | Professional & scientific | 2026 |
| Ghias Wholesale Ltd | Wholesale & retail | 2026 |
| GHT Global Ltd | Administrative & support | 2013 |
| Gian Supermarket Ltd | Wholesale & retail | 2012 |
| Giant Sandbox Ltd. | Professional & scientific | 2014 |
| Gibside Court Management Limited | Households | 2001 |
| Gibside View Management Company Limited | Real estate | 2002 |
| Gibson & Co. Solicitors Ltd | Professional & scientific | 2011 |
| Gibson Harris Holdings Ltd | Financial services | 2023 |
| Gibson Investments (North East) Limited | Other services | 2014 |
| Gibson Metalwork Limited | Manufacturing | 2011 |
| Gibson Plant Hire Limited | Wholesale & retail | 1985 |
| Gideon Properties Ltd | Real estate | 2012 |
| GIE GIE Recovery Service Limited | Wholesale & retail | 2026 |
| Giga Amps UK Ltd | Manufacturing | 2015 |
| Giga Merchant Limited | Information & communication | 2014 |
| Gigi Aesthetics Training Academy Limited | Education | 2025 |
| Gilbert Birdsall Trading Limited | Administrative & support | 1985 |
| Gilbert Reay Limited | Financial services | 2023 |
| Gilbertson Utilities & Plant Ltd | Construction | 2026 |
| Gilchesters Organics Limited | Manufacturing | 2005 |
| Gilchrist Bramwell Case Management Services Ltd | Health & social care | 2026 |
| Gilchrist Technical Services Limited | Administrative & support | 2007 |
| Gilded Orpharion Ensemble Limited | Arts & recreation | 2022 |
| Gill & Robinson Limited | Wholesale & retail | 1975 |
| Gill & Sons Property Management Ltd | Real estate | 2024 |
| Gill Family Holdings Limited | Financial services | 2026 |
| Gill Group Holdings Ltd | Hospitality | 2021 |
| Gill Property Services NCL Ltd | Real estate | 2023 |
| Gillie & Blair Logistics Ltd | Transport & logistics | 2020 |
| Gillie Property Services Holdings Limited | Extraterritorial | 2025 |
| Gillie Property Services Limited | Real estate | 2024 |
| Gillies Automation Ltd | Professional & scientific | 2023 |
| Gillmart Limited | Wholesale & retail | 2024 |
| Gills Gateshead Limited | Hospitality | 2023 |
| Gills Heaton Limited | Hospitality | 2019 |
| Gills Ponteland Limited | Hospitality | 2023 |
| Gills Premier Ltd | Wholesale & retail | 2018 |
| Gills Silverlink Limited | Hospitality | 2025 |
| Gills Stack Newcastle Ltd | Hospitality | 2018 |
| Gills Sunderland Ltd | Hospitality | 2014 |
| Gills Wallsend Limited | Hospitality | 2023 |
| Gills West Denton Limited | Hospitality | 2019 |
| Giltkale Limited | Households | 1983 |
| Gina Hair Beauty Salon Limited | Other services | 2017 |
| Ginger Teleporter Limited | Administrative & support | 2018 |
| Gingerinos Kitchen Limited | Hospitality | 2021 |
| GIP Limited | Real estate | 1966 |
| Giraffe Private Finance Limited | Financial services | 2019 |
| Giraffe Residences Ltd | Construction | 2019 |
| Gireesh Goel Ltd | Professional & scientific | 2018 |
| Giri Restaurant Ltd | Hospitality | 2026 |
| Gitlife Biotech Ltd | Professional & scientific | 2023 |
| Give ME 5 Foundation | Professional & scientific | 2019 |
| Givecircle Ltd | Information & communication | 2002 |
| GIZ a Fiver Ltd | Wholesale & retail | 2025 |
| Gizalook Ltd | Information & communication | 2011 |
| GJB Installations Ltd | Construction | 2026 |
| GJS Plumbing Heating Stoves Ltd | Construction | 2024 |
| GJT Groundworks Limited | Construction | 2024 |
| GK Accountancy Limited | Professional & scientific | 2022 |
| GK Car Valeting Limited | Wholesale & retail | 2024 |
| GK Home Improvements Ltd | Construction | 2024 |
| GK Turfing Ltd | Administrative & support | 2015 |
| Gkasis Limited | Financial services | 2016 |
| GKH Developments Limited | Construction | 2010 |
| GKW Property Ltd | Real estate | 2024 |
| Gladglider Developments Limited | Real estate | 2018 |
| Gladglider Estates Limited | Construction | 2020 |
| Gladglider Limited | Real estate | 2012 |
| Gladglider Projects Limited | Professional & scientific | 2012 |
| Gladglider Ventures Limited | Real estate | 2017 |
| Gladstone Kelly Properties Limited | Real estate | 2022 |
| Glam Queen Co. Limited | Wholesale & retail | 2020 |
| Glamaholic Ltd | Other services | 2020 |
| Glambae Ltd | Other services | 2023 |
| Glamracket Events Ltd | Administrative & support | 2023 |
| Glamserv LP | | 2017 |
| Glance House Ltd | Wholesale & retail | 2022 |
| Glantlees Property Ltd | Real estate | 2025 |
| Glass FIX Direct Ltd | Construction | 2016 |
| Glass Tech Architectural Ltd | Construction | 2015 |
| Glasshouse (T/A Sambuca Metro) Ltd | Hospitality | 2019 |
| Glassworks Community Enterprises Ltd | Information & communication | 2020 |
| Glassworks Production Ltd | Information & communication | 2020 |
| Glassworks Recording Studio Ltd | Information & communication | 2025 |
| Glazing Bureau Ltd | Construction | 2019 |
| GLB Bistro Co. Limited | Hospitality | 2010 |
| GLB Financial Services Limited | Financial services | 2013 |
| GLE Notting Hill Ltd | Hospitality | 2018 |
| Gleamglow Limited | Wholesale & retail | 2025 |
| Glebe Farm Court Residents Association Company Limited | Households | 2005 |
| Glebe Operations Limited | Construction | 2026 |