| GB Locking Systems Ltd | Administrative & support | 2003 |
| GB MOT Centre Ltd | Wholesale & retail | 2026 |
| GBI Solutions Ltd | Extraterritorial | 2014 |
| Gdlr Group Ltd | Financial services | 2024 |
| Gdlr Renewable Ltd | Construction | 2024 |
| Gebhards Bakery Limited | Hospitality | 2016 |
| Gebremedhin Dance CIC | Education | 2026 |
| Gemma Clegg Ltd | Information & communication | 2022 |
| Geoff Hogg Ltd | Information & communication | 2023 |
| Geoff Parkin Hydro Ltd | Professional & scientific | 2020 |
| GEV Consulting Limited | Professional & scientific | 2024 |
| GHS Advisory Limited | Professional & scientific | 2026 |
| Giannis Morpeth Ltd | Hospitality | 2024 |
| Gibson Properties (NE) Limited | Real estate | 2024 |
| Giddy Goose (NE) Ltd | Hospitality | 2024 |
| Givens Properties Limited | Hospitality | 2022 |
| GJP Software Ltd | Information & communication | 2023 |
| GJR Surveyors Ltd | Professional & scientific | 2018 |
| Glamaig Holdings Ltd | Real estate | 2020 |
| Glaucus Group Limited | Professional & scientific | 2026 |
| Glech Holdings Limited | Financial services | 2020 |
| Glenelg Resourcing & Development Ltd | Administrative & support | 2016 |
| Global Outdoor Design Ltd | Construction | 2026 |
| Globalstripe Limited | Information & communication | 2013 |
| Gloster Hill Management Company Limited | Households | 2019 |
| GM Northumbrian Hot TUB Breaks Limited | Real estate | 2020 |
| GM Skin Solutions Ltd | Other services | 2025 |
| Go FAR Pre-School Limited | Education | 2019 |
| GOB (Morpeth) Limited | Manufacturing | 2024 |
| Golden FRY (NE) Ltd | Hospitality | 2019 |
| Golf Nation Limited | Administrative & support | 2019 |
| Good Dog Walking Ltd | Other services | 2021 |
| Goosehill Early Excellence Property Limited | Real estate | 2020 |
| GPS Civil Engineering Ltd | Construction | 2024 |
| GPS Training Limited | Professional & scientific | 2004 |
| Granby Inn Limited | Hospitality | 2016 |
| Grape & Grain (Morpeth) Ltd | Wholesale & retail | 2014 |
| Graphene Business Solutions Limited | Professional & scientific | 2014 |
| Great Green Housing Scheme Ltd | Professional & scientific | 2024 |
| Great Tower Consulting Limited | Administrative & support | 2025 |
| Greater Morpeth Development Trust Limited | Administrative & support | 2006 |
| Greaves Consultancy Limited | Education | 2013 |
| Greek Taberna Ltd | Hospitality | 2018 |
| Green Acres Future Ltd | Professional & scientific | 2023 |
| Green Chillies Takeaway Ltd | Hospitality | 2019 |
| Green North Ltd | Education | 2025 |
| Green Pastures Northumbria Ltd | Agriculture & fishing | 2025 |
| Greens @ MPT Limited | Hospitality | 2020 |
| Greenshank Holdings Limited | Financial services | 2020 |
| Greenwood Learning Limited | Education | 2021 |
| Greg Stephenson Engineering Ltd | Professional & scientific | 2021 |
| Grey Street Finance Ltd | Financial services | 2022 |
| Greymoon LLP | | 2008 |
| Greystones Property Limited | Real estate | 2019 |
| Grin Productions Ltd | Information & communication | 2010 |
| Growing Years Nutrition Limited | Other services | 2024 |
| GT Interiors (NE) Ltd | Construction | 2022 |
| Gubeon Consulting Ltd | Professional & scientific | 2025 |
| Gurleen's Newgate News Ltd | Wholesale & retail | 2025 |
| Gymrations Ltd | Wholesale & retail | 2025 |
| H & M Fencing Ltd | Administrative & support | 2025 |
| H C White Limited | Wholesale & retail | 2007 |
| H P Barrass Limited | Agriculture & fishing | 2022 |
| H T 36 Limited | Other services | 2024 |
| H&M Lets Ltd | Real estate | 2024 |
| H.J.S. Systems Engineering Limited | Extraterritorial | 1998 |
| Hades Explore Ltd | Arts & recreation | 2022 |
| Hadrians Vehicle Spa Ltd | Wholesale & retail | 2021 |
| Hadrian’S Leisure Ltd | Hospitality | 2025 |
| Hadston House Youth & Community Projects Limited | Other services | 2009 |
| Hadston Indian Ltd | Hospitality | 2023 |
| Hagen Developments Limited | Real estate | 1986 |
| Hair & Beauty Co NE Ltd | Other services | 2023 |
| Hair Design by Joanne Limited | Other services | 2017 |
| Hakin Healthcare Ltd | Health & social care | 2023 |
| Haldane Cartoons Ltd | Arts & recreation | 2017 |
| Halo Creators Ltd | Professional & scientific | 2025 |
| Hamilton Engineering & Safety Limited | Mining & quarrying | 2012 |
| Hammer Contracting Limited | Manufacturing | 2018 |
| Handyside Fishing Ltd | Agriculture & fishing | 2005 |
| Handyside Holdings Ltd | Agriculture & fishing | 2022 |
| Handyside Homes Limited | Real estate | 2025 |
| Hanlon Property Investments Ltd | Real estate | 2026 |
| Happening UP North Limited | Administrative & support | 2014 |
| Happy Food Inc Ltd | Hospitality | 2025 |
| Harbottle Castle Estate Company | Agriculture & fishing | 1947 |
| Harbour House 27 Ltd | Hospitality | 2025 |
| Harcar Limited | Real estate | 2008 |
| Harding Education Ltd | Education | 2021 |
| Harmer & Heslop Properties Ltd | Real estate | 2023 |
| Harrow Grange Residents Management Company Limited | Households | 2022 |
| Harry & Archie Ltd | Public administration | 2023 |
| Harry Edwin Site Services Ltd | Extraterritorial | 2024 |
| Harry's Bar (Alnwick) Ltd | Hospitality | 2021 |
| Hartley Main Farms Limited | Agriculture & fishing | 1953 |
| Harwood Business Services Limited | Professional & scientific | 2009 |
| Hashtag Business Events Limited | Administrative & support | 2016 |
| Hashtag Business Services Limited | Professional & scientific | 2018 |
| Hauxley Windows and Doors Ltd | Construction | 2025 |
| Hawik Limited | Real estate | 1993 |