| Gebhard Properties Ltd | Real estate | 2024 |
| GENER8 Power UK Ltd | Construction | 2022 |
| Generalpart Limited | Wholesale & retail | 1994 |
| Genimo Limited | Real estate | 2024 |
| Genine Property Services Limited | Real estate | 2015 |
| Genius Care Limited | Health & social care | 2016 |
| Geoffs Geordie GIN Ltd | Manufacturing | 2024 |
| Geordie Flavours Ltd | Hospitality | 2022 |
| Geordie Geoffs GIN Ltd | Manufacturing | 2024 |
| George Alexander Estates Limited | Hospitality | 2021 |
| Georgedwards Ltd | Wholesale & retail | 2025 |
| Georgia Lou's Boutique Ltd | Wholesale & retail | 2023 |
| Geowarmth Heat Pumps Limited | Construction | 2007 |
| Geryobi Limited | Wholesale & retail | 2024 |
| GET Carter Cars Limited | Wholesale & retail | 2015 |
| GET Ferm Ltd | Wholesale & retail | 2025 |
| GH Brickwork North East Ltd | Construction | 2022 |
| Ghalei Property Ltd | Real estate | 2024 |
| Gigsavvy Ltd | Professional & scientific | 2024 |
| Gillan Holdings Ltd | Financial services | 2025 |
| Ginger Pictures Limited | Information & communication | 2014 |
| Gingervet Ltd | Professional & scientific | 2024 |
| Gingland Ltd | Wholesale & retail | 2025 |
| GJ Crane Services Limited | Manufacturing | 2023 |
| GJW Properties Limited | Real estate | 2024 |
| GL Clinic Limited | Other services | 2024 |
| Glasshouse Manor Walks Ltd | Hospitality | 2023 |
| Glasshouse Newcastle Ltd | Hospitality | 2018 |
| Global Design Search Limited | Administrative & support | 2008 |
| Global Image (UK) Limited | Manufacturing | 2012 |
| Global Intelligent Consultancy Ltd | Wholesale & retail | 2007 |
| Globalwheel Trade Ltd | Wholesale & retail | 2025 |
| Gloss With the Cutting Crew Ltd | Other services | 2025 |
| Glow Club Beauty and Aesthetics North East Ltd | Other services | 2024 |
| GM Power Engineering Limited | Construction | 2023 |
| Gnbpropertylets Ltd | Households | 2024 |
| Go Wind Ltd | Energy | 2017 |
| Go-Bi Consultancy Limited | Information & communication | 2014 |
| Gofor Windows Limited | Manufacturing | 1998 |
| Golav Trading Ltd | Other services | 2025 |
| Gold Strokes North East Swim Limited | Arts & recreation | 2026 |
| Gold Strokes Swim School Ltd | Education | 2019 |
| Golden Lifestyle Management Ltd | Other services | 2026 |
| Golden Phoenix Takeaway Limited | Hospitality | 2020 |
| Golfclubscreens Ltd | Other services | 2020 |
| Good Time Childcare Limited | Health & social care | 2011 |
| GOODGEAR24 Ltd | Wholesale & retail | 2024 |
| Goodlabs Consulting Limited | Information & communication | 2017 |
| Gorilla Training Ltd | Professional & scientific | 2015 |
| Gosforth Bathroom Fitters Ltd | Construction | 2026 |
| Goss Media Ltd | Information & communication | 2019 |
| Grace Choi Architecture Ltd. | Professional & scientific | 2016 |
| Graft Health & Fitness Limited | Arts & recreation | 2020 |
| Graham Saxon Property Limited | Real estate | 2018 |
| Grahams NDT Limited | Professional & scientific | 2015 |
| Grand Sambuca Ltd | Hospitality | 2026 |
| Grand Sultan Limited | Hospitality | 2020 |
| Grange Kitchen and Bedrooms Ltd | Construction | 2020 |
| Graphic Print & Sign Company Ltd | Manufacturing | 2011 |
| Graphink Limited | Manufacturing | 2014 |
| Green Brew Co Ltd | Wholesale & retail | 2023 |
| Green Standard Co. UK Limited | Administrative & support | 2025 |
| Green Tomato Group Ltd | Education | 2018 |
| Green's Property Management Ltd | Real estate | 2025 |
| Greener Solutions Group Ltd | Construction | 2015 |
| Greyhound GAS Ltd | Construction | 2022 |
| Greystone Swan Accountants Limited | Professional & scientific | 2023 |
| GRS Financial Ltd | Financial services | 2023 |
| GSJ Mechanical Services Ltd | Professional & scientific | 2023 |
| GTC Property Ltd | Real estate | 2023 |
| GYM24 (North Shields) Ltd | Arts & recreation | 2022 |
| H & H Recruitment Ltd | | 1987 |
| H B Clark Holdings Limited | Financial services | 2016 |
| H Bros Ltd | Wholesale & retail | 2020 |
| H Social Ltd | Professional & scientific | 2021 |
| H&H Homes NE Ltd | Real estate | 2025 |
| H&M Holdings Ltd | Real estate | 2020 |
| H.B.Clark & Co.(Successors)Limited | Manufacturing | 1913 |
| H.C. Horizons CIC | Professional & scientific | 2014 |
| H.T.S NE Ltd | Mining & quarrying | 2017 |
| H2O Bathroom Design Co. Limited | Wholesale & retail | 2002 |
| H2O Bathroom Installations Ltd | Construction | 2018 |
| Hadaway & Hadaway Solicitors LLP | | 2015 |
| Hadrian Joinery & Building Services Limited | Construction | 2009 |
| Hadrian Marketing Limited | Administrative & support | 2008 |
| Hadrian Mini Buses Ltd | Transport & logistics | 2021 |
| Hair & Beauty House NE Ltd | Other services | 2024 |
| Halfhunt Limited | Real estate | 1988 |
| Hall Power Engineering Limited | Construction | 2023 |
| Hallmel Limited | Construction | 2012 |
| Halo Beauty Haven Limited | Other services | 2022 |
| Halo Hair Studio Ltd | Other services | 2024 |
| Halo Photography Ltd | Professional & scientific | 2009 |
| Halogen Design Limited | Professional & scientific | 2004 |
| Hammerton Housing Limited | Real estate | 2019 |
| Handstand Limited | Professional & scientific | 2005 |
| Hannah Baker Developments Ltd | Real estate | 2021 |
| Hansen Building Supplies Limited | Administrative & support | 2018 |
| Hansen Heating and Plumbing Limited | Construction | 2025 |
| Happy and Hydrated Ltd | Wholesale & retail | 2014 |