| Gameshark Studios Limited | Information & communication | 2017 |
| Gamezone Events Ltd | Arts & recreation | 2019 |
| Gamilola Ltd | Manufacturing | 2024 |
| Gamytize Studios Ltd | Information & communication | 2025 |
| Ganley Estates Ltd | Construction | 2020 |
| Garc Consulting Limited | Professional & scientific | 2018 |
| Gardni Ltd | Information & communication | 2025 |
| Garrison Utilities Ltd | Financial services | 2021 |
| Gary Bell Ltd | Professional & scientific | 2025 |
| Gary Cousins Plumbing and Heating Limited | Construction | 2018 |
| Gary Johnson Ltd | Construction | 2025 |
| GAS and Elec NE Ltd | Construction | 2025 |
| GAS and Heating Services North East Ltd | Manufacturing | 2017 |
| GAS Safety School Ltd | Administrative & support | 2026 |
| Gastro Durham Ltd | Hospitality | 2020 |
| Gastro Leisure Ltd | Hospitality | 2019 |
| Gastro NE Ltd | Financial services | 2022 |
| Gastro Sunderland Ltd | Hospitality | 2021 |
| Gatecroft Property Management Ltd | Real estate | 2020 |
| Gati Logistics Ltd | Transport & logistics | 2026 |
| Gatley Estates Limited | Real estate | 2007 |
| Gavin J Reynolds & SON Family Funeral Directors Limited | Other services | 2017 |
| GB Assurance Ltd | Administrative & support | 2025 |
| GB Building North East Limited | Construction | 2020 |
| GB Renovate Ltd | Construction | 2018 |
| Gbana Fitness Ltd | Arts & recreation | 2013 |
| Gbana Ltd | Administrative & support | 2012 |
| GBS Engineering Surveys Ltd | Construction | 2007 |
| Gbus Property Investment Ltd | Real estate | 2025 |
| GD3 Services Limited | Information & communication | 2026 |
| GDB Software Developments Limited | Information & communication | 2025 |
| GDM Property Enterprises Ltd | Real estate | 2021 |
| GDM Waste Solutions Ltd | Professional & scientific | 2019 |
| Gdsd Media Solutions Limited | Wholesale & retail | 2023 |
| GE Groundworks Holdings Limited | Financial services | 2025 |
| GE Groundworks Limited | Construction | 2019 |
| GE Technical Ltd | Manufacturing | 2018 |
| GEA Secure Limited | Professional & scientific | 2023 |
| Gee's Trainers Ltd | Wholesale & retail | 2025 |
| Geekys Repairs Ltd | Other services | 2022 |
| Geene Ltd | Wholesale & retail | 2020 |
| Gefix Corporation Ltd | Construction | 2025 |
| Gemlik Pizza Ltd | Hospitality | 2026 |
| Gemstone Technology Solution Limited | Information & communication | 2023 |
| Gemz Property Solutions Ltd | Real estate | 2025 |
| GEN Fabrications Ltd | Manufacturing | 2025 |
| General Physical Preparedness Limited | Arts & recreation | 2024 |
| Genie Homeplan Limited | Real estate | 2009 |
| Gensap Limited | Information & communication | 2011 |
| Gentoo Genie Limited | Financial services | 2009 |
| Gentoo Homes Limited | Construction | 2003 |
| Gentoo Services Limited | Real estate | 2020 |
| GEO Financial Services Ltd | Financial services | 2018 |
| GEO Journey Limited | Wholesale & retail | 2017 |
| GEO Rate Ltd | Manufacturing | 2014 |
| Geomatics Solutions Limited | Professional & scientific | 2014 |
| Georgia's Grooms Limited | Other services | 2023 |
| Germain Logistics Limited | Transport & logistics | 2019 |
| Gerry Fallova Card Sales Ltd | Wholesale & retail | 2023 |
| GES NE Properties Ltd | Real estate | 2025 |
| GET Right Gang Ltd | Information & communication | 2025 |
| GETTINS7 Ltd | Professional & scientific | 2026 |
| Gezaazg Limited | Financial services | 2023 |
| GF Investments Limited | Financial services | 2021 |
| GF Portfolio Ltd | Administrative & support | 2020 |
| GG Property Services Ltd | Real estate | 2023 |
| Ggabb Leisure Limited | Hospitality | 2024 |
| GH Prestige Body & Paint Ltd | Wholesale & retail | 2024 |
| Ghostwriter Consultancy & Events Ltd | Professional & scientific | 2019 |
| Gibbons International Ship Stores Limited | Wholesale & retail | 2000 |
| Gibson Services Ltd | Construction | 2025 |
| Gifted Happiness Limited | Wholesale & retail | 2024 |
| GIFTS2DRINK Limited | Wholesale & retail | 2024 |
| GIG LAB Ltd | Information & communication | 2025 |
| Gigs Gear Ltd | Wholesale & retail | 2019 |
| Gigsandclubs Limited | Arts & recreation | 2014 |
| Gilby Cooper Properties Limited | Real estate | 2026 |
| Gillespie Developments Limited | Construction | 2016 |
| Gillespie Recruitment Ltd | Other services | 2021 |
| Gills Golden Corner Ltd | Wholesale & retail | 2025 |
| Gills Golden FRY Limited | Hospitality | 2022 |
| Gills Trading Company Ltd | Real estate | 2024 |
| Gillson Properties Ltd | Real estate | 2023 |
| Gillson Property Management Limited | Real estate | 2023 |
| Gilwood Consultancy Services Ltd | Information & communication | 2025 |
| Ginger Bird Property Limited | Real estate | 2026 |
| Ginger Giraffes Properties Limited | Real estate | 2020 |
| Gingerbread Training Ltd | Education | 2019 |
| Ginilab Ltd | Information & communication | 2012 |
| Ginilab Print & Media Ltd | Manufacturing | 2025 |
| Ginos FRY Ltd | Hospitality | 2018 |
| Girlsandmums Organics Limited | Wholesale & retail | 2026 |
| Gitex Corporation Ltd | Construction | 2023 |
| GJ Jenner & SON Ltd | Hospitality | 2022 |
| GJ Letting and Property Investments Ltd | Real estate | 2025 |
| GJ Shellfish Limited | Agriculture & fishing | 2025 |
| GJD Elite Kitchens & Bathrooms Ltd | Construction | 2026 |
| GJK Ltd | Manufacturing | 2018 |
| GJM Property Group Ltd | Real estate | 2024 |
| GJN Travel Limited | Administrative & support | 2019 |