| GK Capital Advisory Limited | Professional & scientific | 2026 |
| GKB Financial Planning Ltd | Professional & scientific | 2021 |
| Glam LAB (North East) Ltd | Other services | 2024 |
| GLB Development Ltd | Construction | 2015 |
| GLD Developments Ltd | Households | 2018 |
| Glen Street Health Limited | Wholesale & retail | 2025 |
| Glendale Presentation Solutions Limited | Wholesale & retail | 2017 |
| Gleneagle Homes (Cumbria) Ltd | Construction | 2025 |
| Gleneagle Homes (Northern) Ltd | Construction | 2025 |
| Gleneagle Homes Ltd | Construction | 2025 |
| Glenleigh Estates Ltd | Real estate | 2023 |
| Glhp Leisure Limited | Hospitality | 2003 |
| Global Energy Solutions Ltd | Administrative & support | 2026 |
| Global Services (North East) Limited | Transport & logistics | 2006 |
| Global Teacher CIC | Education | 2019 |
| Global VX Ltd | Arts & recreation | 2010 |
| Glocal Supplies Ltd | Wholesale & retail | 2012 |
| Glow UP Beauty Hub Ltd | Other services | 2023 |
| Glowing Well Ltd | Wholesale & retail | 2025 |
| Gmcs Leisure Limited | Hospitality | 2026 |
| GMG Offshore Solutions Limited | Professional & scientific | 2022 |
| GMS Renewable Ltd | Information & communication | 2017 |
| GN Concept Limited | Wholesale & retail | 2025 |
| Gnarly Competitions Ltd | Wholesale & retail | 2025 |
| Go Big Go Green Limited | Construction | 2023 |
| Go North East Properties Ltd | Hospitality | 2023 |
| Go Virtual Tours Ltd | Administrative & support | 2020 |
| GOA Seaburn Ltd | Hospitality | 2018 |
| Gochills Events Ltd | Hospitality | 2026 |
| GOD Favor Beauty Salon Ltd | Wholesale & retail | 2024 |
| God's Own Heritage Limited | Wholesale & retail | 2025 |
| Gold Ribbon Properties Limited | Real estate | 2016 |
| Golden Cube Ltd | Hospitality | 2010 |
| Golden Cart Ltd | Wholesale & retail | 2026 |
| Golden Fleece (SR3) Ltd | Hospitality | 2020 |
| Golden Jiang NAN Ltd | Other services | 2015 |
| Golden Nail Lounge Ltd | Other services | 2026 |
| Golden Sunderland Limited | Hospitality | 2024 |
| Goldendream Limited | Real estate | 1998 |
| Golf in the City North East Limited | Arts & recreation | 2024 |
| Gomesmetal Group Ltd | Extraterritorial | 2024 |
| Good Life Homes (North East) Ltd | Real estate | 2018 |
| Good Life Letting Agents Limited | Real estate | 2006 |
| Goodacre Physiotherapy Limited | Health & social care | 2010 |
| Goodfellow's Gaffs Ltd | Households | 2024 |
| Goprocure Property Services Limited | Construction | 2019 |
| Gordon Spurs Ltd | Arts & recreation | 2015 |
| Gose Catering Ltd | Hospitality | 2025 |
| Gough Medical Limited | Health & social care | 2011 |
| Govera International Limited | Wholesale & retail | 2015 |
| Gozma Limited | Professional & scientific | 2019 |
| GP & Co Holdings Ltd | Financial services | 2025 |
| GP Alliance of the North Limited | Health & social care | 2026 |
| GP and Co Cleaning Services Ltd | Administrative & support | 2026 |
| GP Drylining Limited | Construction | 2020 |
| GP Healthcare Services Limited | Health & social care | 2018 |
| GPU Studios Ltd | Wholesale & retail | 2022 |
| GR Comms Ltd | Information & communication | 2021 |
| Grab and Go (Sunderland) Ltd | Wholesale & retail | 2026 |
| Grace and Success (G&S) Ltd | Wholesale & retail | 2025 |
| Grace House North East | Other services | 2002 |
| Grace Hylton Ltd | Real estate | 2023 |
| Grace Private Ltd | Health & social care | 2023 |
| Grad Ventures (North) Limited | Professional & scientific | 2019 |
| Graeme Flaxen Ltd | Other services | 2021 |
| Grainger Cards Ltd | Wholesale & retail | 2025 |
| Grainger Financial Planning Ltd | Professional & scientific | 2011 |
| Gramic Enterprises Limited | Hospitality | 1987 |
| Grand Central Railway Company Limited | Transport & logistics | 2000 |
| Grandoz Ltd | Wholesale & retail | 2025 |
| Grange Home Solutions Ltd | Construction | 2017 |
| Grange Roofing (NE) Limited | Construction | 2005 |
| Grange Terrace Services Limited | Professional & scientific | 2005 |
| Grangetown Premier Store Limited | Wholesale & retail | 2006 |
| Grantly Hill Developments Ltd | Construction | 2025 |
| Grantly Hill Homes Ltd | Real estate | 2025 |
| Gray Court Management Company Limited | Households | 1984 |
| Gray Squared Properties Limited | Real estate | 2015 |
| Gray Wolfe Property Ltd | Real estate | 2025 |
| Grayvan Ltd | Transport & logistics | 2026 |
| GRB Joinery Ltd | Construction | 2023 |
| GRC Triumvirates Holdings Limited | Financial services | 2025 |
| Great Breaks Limited | Arts & recreation | 2005 |
| Great North Property Solutions Limited | Real estate | 2022 |
| Great North Sourcing Limited | Construction | 2023 |
| Greden Holdings Limited | Administrative & support | 2024 |
| Green ARC Consulting Limited | Professional & scientific | 2011 |
| Green Key Installations Limited | Construction | 2015 |
| Green Marine Solutions Limited | Professional & scientific | 2011 |
| Green Medical Ltd | Health & social care | 2022 |
| Green Platypus Holdings Ltd | Administrative & support | 2023 |
| Green Talent Solutions Ltd | Administrative & support | 2018 |
| Green Tea Cafe Limited | Hospitality | 2025 |
| Green Tree Conveyancing Limited | Professional & scientific | 2024 |
| Green, White and Sice Limited | Wholesale & retail | 2018 |
| GREENACRES18 Ltd | Wholesale & retail | 2024 |
| Greenbridge Consulting Ltd | Professional & scientific | 2008 |
| Greenchapel Surveying Ltd | Professional & scientific | 2022 |
| Greenlay Limited | Real estate | 2021 |
| Greens Autos Ltd | Wholesale & retail | 2025 |