| Greens Recoveries Ltd | Transport & logistics | 2026 |
| Greenshields Concepts Limited | Health & social care | 2014 |
| Greenwg Ltd | Professional & scientific | 2025 |
| Gregg's Reliable Dispatch Ltd | Transport & logistics | 2023 |
| Greyman Design Limited | Manufacturing | 2016 |
| Greystoke Project Management Ltd | Construction | 2016 |
| GRG Roofing and Building Solutions Limited | Construction | 2025 |
| Gridcomm Ltd | Professional & scientific | 2010 |
| Grillisthan Sunderland Ltd | Hospitality | 2025 |
| Grinder Coffee Co Ltd | Wholesale & retail | 2018 |
| Grindon Barber Ltd | Other services | 2025 |
| Grindon Convenience Store Limited | Wholesale & retail | 2021 |
| Grindon Curry Ltd | Hospitality | 2023 |
| Grindon Delight Limited | Hospitality | 2024 |
| Grindon Ltd | Health & social care | 2025 |
| Grindon NE Ltd | Hospitality | 2019 |
| Grindon Tandoori Ltd | Hospitality | 2026 |
| Grisman Limited | Wholesale & retail | 2020 |
| Groove Nation Empire Ltd | Hospitality | 2025 |
| Groser & SON Ltd | Real estate | 2025 |
| Ground Floor Bar Ltd | Hospitality | 2026 |
| Group Scale Consultancy Limited | Professional & scientific | 2018 |
| Group Tegula Limited | Construction | 2011 |
| Grove Decorators Limited | Construction | 2024 |
| Grovemill Properties Limited | Households | 1997 |
| GRW Recruitment Limited | Financial services | 2015 |
| GS Hydro Limited | Manufacturing | 1996 |
| GS Windowcleaning Services Ltd | Administrative & support | 2025 |
| Gs-Physiotherapy Ltd | Health & social care | 2012 |
| GSB Painting Ltd | Construction | 2026 |
| Gsdit North Ltd | Information & communication | 2025 |
| GSM Consultancy Services Limited | Professional & scientific | 2025 |
| GT Worthy Logistics Ltd | Transport & logistics | 2025 |
| GTD Developments Limited | Construction | 2006 |
| Guardian Dampproofing NE Ltd | Construction | 2018 |
| Guardian Defence Systems Ltd | Administrative & support | 2025 |
| GUISBOROUGH34 Ltd | Wholesale & retail | 2017 |
| Gumstar Propel Limited | Health & social care | 2026 |
| Gupta Psychiatric Services Ltd | Health & social care | 2012 |
| Gurito 77 Limited | Transport & logistics | 2016 |
| Guttr Ltd | Administrative & support | 2025 |
| GV Homespace Ltd | Real estate | 2019 |
| GVS Conditioning Limited | Arts & recreation | 2011 |
| GVS Conditioning Services Ltd | Administrative & support | 2023 |
| GW Inspection Services Ltd | Professional & scientific | 2023 |
| GWD Topco Limited | Financial services | 2024 |
| GYE Ltd | Real estate | 2026 |
| H & H (Sunderland) Limited | Wholesale & retail | 2016 |
| H & R Foods Limited | Wholesale & retail | 2012 |
| H & W (NE) Ltd | Hospitality | 2016 |
| H & Z 88 Ltd | Hospitality | 2020 |
| H Best Catering Limited | Hospitality | 2015 |
| H Mullen Wind Solutions Ltd | Administrative & support | 2019 |
| H R Fabrication Limited | Construction | 2009 |
| H&L Site Consultancy Ltd | Professional & scientific | 2025 |
| H&M Cars Limited | Wholesale & retail | 2025 |
| H&S Payne Ltd | Real estate | 2026 |
| H&T Sun Ltd | Manufacturing | 2025 |
| H.J. Foodstores Limited | Extraterritorial | 1993 |
| H.Jones & Son(Grocers)Limited | Wholesale & retail | 1958 |
| H3 Property Group Ltd | Construction | 2024 |
| Ha-Ge Properties Ltd | Real estate | 2025 |
| Hably Software Ltd | Information & communication | 2026 |
| Hackett Property Ltd | Real estate | 2006 |
| Hada Power Services Ltd | Construction | 2024 |
| Hadii Ltd | Wholesale & retail | 2026 |
| Hadrian Capital Ltd | Professional & scientific | 2023 |
| Hagen Locksmiths Limited | Other services | 2025 |
| Haimachek UK Limited | Professional & scientific | 2014 |
| Hairy Beast Ltd | Other services | 2026 |
| Haley Nails & Spa Ltd | Other services | 2023 |
| Hall & Hall Leisure Ltd | Hospitality | 2025 |
| Hallgarth Court Residents Limited | Administrative & support | 2005 |
| Halpen Ltd | Administrative & support | 2025 |
| Halvic Technical Limited | Construction | 2013 |
| Hamdoz Ltd | Hospitality | 2023 |
| Hamilton Electrical Services Limited | Construction | 1996 |
| Hamilton’S Driving Tuition Ltd | Education | 2023 |
| Hammal Holdings Limited | Financial services | 2007 |
| Hamshi Ltd | Wholesale & retail | 2020 |
| Hana Rashid Ltd | Wholesale & retail | 2025 |
| Hand Car Wash Professionals Ltd | Other services | 2014 |
| Handzy (NE) Ltd | Real estate | 2024 |
| Hanover Airey Development Limited | Real estate | 2002 |
| Happier Days for Strays | Other services | 2015 |
| Happy Customers Group Ltd | Administrative & support | 2017 |
| Happy MAN Limited | Financial services | 2017 |
| Happy Tails RC Limited | Agriculture & fishing | 2025 |
| Happy WOK Sunderland Ltd | Hospitality | 2019 |
| HAQ Foods Ltd | Hospitality | 2021 |
| Harbour Studios C.I.C. | Arts & recreation | 2024 |
| Hardings Solicitors Limited | Professional & scientific | 2012 |
| Harjag Property Limited | Real estate | 2026 |
| Harke Global Ltd | Wholesale & retail | 2024 |
| Harland Roofing & Joinery Ltd | Construction | 2025 |
| Harley Psychiatrists Ltd | Health & social care | 2019 |
| Harman Property Limited | Real estate | 2025 |
| Harmonic EGG Newcastle Ltd | Other services | 2022 |
| Harnesty Ventures Ltd | Hospitality | 2026 |
| Harnett NE Ltd | Health & social care | 2024 |