| Games Hangar Ltd | Wholesale & retail | 2025 |
| Gamesweek Childcare Ltd | Health & social care | 2006 |
| GAP Group Leasing Limited | Administrative & support | 2012 |
| GAP Group Limited | Administrative & support | 1924 |
| GAP Group North East Limited | Professional & scientific | 2015 |
| GAP Investments Ltd | Financial services | 2016 |
| GAP North West Limited | Water & waste | 2015 |
| GAP Organics Group Limited | Water & waste | 2021 |
| GAP Organics Limited | Water & waste | 2018 |
| GAP Polymers Ltd | Water & waste | 2017 |
| GAP Renew Ltd | Manufacturing | 2023 |
| GAP Security Solutions Ltd | Construction | 2018 |
| GAP Urban Metals Recovery Limited | Water & waste | 2022 |
| Gapdaemon Limited | Extraterritorial | 2009 |
| Gapdaemon UK Limited | Extraterritorial | 2010 |
| Garage Turkish Kitchen Ltd | Wholesale & retail | 2022 |
| Garden Suite Limited | Hospitality | 2012 |
| Gareth Watson Logistics Ltd | Transport & logistics | 2025 |
| Garf Medical Services Ltd | Health & social care | 2017 |
| Garl Property Co Ltd | Real estate | 2023 |
| Garner Cole Investment Ltd | Real estate | 2018 |
| Gary Anderson Darts (Spodemo) Limited | Arts & recreation | 2011 |
| Gary Anderson Darts Limited | Arts & recreation | 2008 |
| GAS & Water Solutions (Yorkshire) Ltd | Energy | 2022 |
| GAS 2K Limited | Construction | 2013 |
| GAS and Water Solutions Limited | Construction | 2019 |
| GAS Control Technologies Limited | Wholesale & retail | 2015 |
| GAS Services North East Ltd | Manufacturing | 2014 |
| Gasification Consultancy Limited | Other services | 2008 |
| Gaspro NE Ltd | Construction | 2018 |
| Gastronorth Group Limited | Administrative & support | 2026 |
| Gastronorth Limited | Administrative & support | 2002 |
| Gate 7 Limited | Manufacturing | 2000 |
| Gate Ltd | Extraterritorial | 2020 |
| Gate Properties Ltd | Real estate | 2014 |
| Gatehead Discount Ltd | Wholesale & retail | 2024 |
| Gateline Ltd | Extraterritorial | 2009 |
| Gateline Management Ltd | Real estate | 2006 |
| Gatepay Limited | Extraterritorial | 2014 |
| Gateshead (NE) Ltd | Other services | 2019 |
| Gateshead 4 Houses Limited | Construction | 2017 |
| Gateshead Academy for Torah Studies Limited | Education | 2000 |
| Gateshead Active Ltd | Arts & recreation | 2023 |
| Gateshead Barber Ltd | Other services | 2016 |
| Gateshead Bayis Ltd | Real estate | 2011 |
| Gateshead Bearings Limited | Other services | 1983 |
| Gateshead Binyan Ltd | Extraterritorial | 2011 |
| Gateshead Cabs Ltd | Transport & logistics | 2025 |
| Gateshead Cafe Ltd | Hospitality | 2023 |
| Gateshead Carers Association | Professional & scientific | 2007 |
| Gateshead Ceramics Limited | Construction | 2009 |
| Gateshead Childcare Ltd | Health & social care | 2025 |
| Gateshead College Foundation | Education | 2011 |
| Gateshead Community Based Care Services Limited | Health & social care | 2006 |
| Gateshead Construction Ltd | Construction | 2024 |
| Gateshead Corporation Employees Sports and Social Club CIC | Hospitality | 2024 |
| Gateshead Courier Company Limited | Transport & logistics | 2014 |
| Gateshead Electrical Ltd | Construction | 2022 |
| Gateshead Energy Company Limited | Energy | 2015 |
| Gateshead Energy Holdings Limited | Professional & scientific | 2015 |
| Gateshead FC Elite Academy Ltd | Education | 2020 |
| Gateshead FC Retail Limited | Wholesale & retail | 2022 |
| Gateshead Fell Community Football CIC | Arts & recreation | 2023 |
| Gateshead Fell Limited | Real estate | 2017 |
| Gateshead Football Club Leisure Limited | Hospitality | 2019 |
| Gateshead Football Club Limited | Arts & recreation | 1977 |
| Gateshead Freeholds Ltd | Real estate | 2019 |
| Gateshead Garage Ltd | Wholesale & retail | 2018 |
| Gateshead Grabs and Tippers Ltd | Construction | 2025 |
| Gateshead Halal Ltd | Wholesale & retail | 2024 |
| Gateshead Hand Carwash Ltd | Other services | 2025 |
| Gateshead Inner West PCN Ltd | Health & social care | 2025 |
| Gateshead Inns Limited | Other services | 2012 |
| Gateshead Jewish Primary School Ltd | Education | 2023 |
| Gateshead Joinery Ltd | Construction | 2026 |
| Gateshead Kehilla Building Foundation | Other services | 2015 |
| Gateshead Kehilla Kollel Ltd | Other services | 2020 |
| Gateshead Kosher Butchers Limited | Manufacturing | 2012 |
| Gateshead Learning Trust Limited | Administrative & support | 2014 |
| Gateshead Lofts Ltd | Construction | 2024 |
| Gateshead Ltd | Wholesale & retail | 2026 |
| Gateshead Masonic Hall Company Limited | Other services | 1959 |
| Gateshead Metro News Limited | Wholesale & retail | 2015 |
| Gateshead Pharma Limited | Wholesale & retail | 2023 |
| Gateshead Printing Limited | Information & communication | 2026 |
| Gateshead Quays Hotel Company Limited | Hospitality | 2020 |
| Gateshead Rugby Football Club Limited | Arts & recreation | 2018 |
| Gateshead Snooker Centre Limited | Arts & recreation | 1983 |
| Gateshead Storage Centre Limited | Real estate | 2020 |
| Gateshead Trading Company Limited | Construction | 2009 |
| Gatestock Holdings Limited | Construction | 2004 |
| GATEWAY48 Properties Limited | Real estate | 2024 |
| Gateways Publishing Limited | Information & communication | 2017 |
| Gatmac Ltd | Health & social care | 2014 |
| GAV Warwick Ltd | Energy | 2009 |
| Gayatri Enterprise Limited | Wholesale & retail | 2026 |
| Gazelle Professional Recruitment Services Ltd | Administrative & support | 2022 |
| GB Garden Services Ltd | Administrative & support | 2009 |
| GB Glass Products Ltd | Manufacturing | 2012 |
| GB International (UK) Limited | Administrative & support | 2011 |