| A. Harding Construction Ltd | Construction | 2007 |
| AD Turbo Ltd | Other services | 2025 |
| Ashville DK Limited | Professional & scientific | 2009 |
| Baseline Leeds Ltd | Wholesale & retail | 2019 |
| BE the Change HR Ltd | Administrative & support | 2015 |
| Bondgate Development Company Limited | Construction | 2005 |
| Bridgeford Gardens Management Company Limited | Households | 2024 |
| C.A.R. Developments Limited | Construction | 2020 |
| Carl Ross Associates Limited | Professional & scientific | 2022 |
| CDV 20 Ltd | Real estate | 2024 |
| Core Collective Limited | Real estate | 2021 |
| David Knowles Funeral Service Ltd | Other services | 2024 |
| Eggleston Consultancy Limited | Other services | 2017 |
| Gage Services Limited | Professional & scientific | 2015 |
| Great North Air Ambulance Service Trading Company Limited | Water & waste | 1999 |
| Helmsway Ltd. | Professional & scientific | 2008 |
| HG Consult Ltd | Professional & scientific | 2019 |
| I & a G Holdings Limited | Financial services | 2024 |
| JEJ Inspections Ltd | Administrative & support | 2022 |
| Johnson's Commercial Ltd | Wholesale & retail | 2022 |
| Kerr Consult PMO Ltd | Professional & scientific | 2024 |
| L. C Electrical Ltd | Manufacturing | 2007 |
| Lotus Restaurant Group Limited | Hospitality | 2019 |
| Marie Claire Sport Limited | Wholesale & retail | 2017 |
| MC Engineering (North East) Limited | Construction | 2008 |
| Mcclew Consulting Ltd | Administrative & support | 2026 |
| Mitrewell Agencies Ltd | Transport & logistics | 2005 |
| MJ Interiors Kitchens Ltd | Construction | 2020 |
| MR Claw Ltd | Arts & recreation | 2026 |
| Nebula Engineering Consultancy Ltd | Professional & scientific | 2023 |
| Newsam House Management Limited | Households | 1975 |
| NRL Engineering & Consultancy Ltd | Professional & scientific | 2020 |
| Oceanwide Wellness Ltd | Health & social care | 2026 |
| Paleschi Training Academy Ltd | Other services | 2024 |
| PMC Rigging Ltd | Construction | 2022 |
| PMO Investments Limited | Real estate | 2020 |
| Podium Cars Ltd | Wholesale & retail | 2019 |
| Pollo by Tomahawk Limited | Hospitality | 2020 |
| RDW Creative Limited | Information & communication | 1990 |
| Rios Brazilian Steakhouse (Northern) Limited | Hospitality | 2025 |
| Rios Brazilian Steakhouse Limited | Administrative & support | 2019 |
| SEO Marine Consultant & Recruitment Ltd | Transport & logistics | 2014 |
| Serino Tradings Limited | Hospitality | 2025 |
| SGS Construction & Design Limited | Construction | 2014 |
| Simon Bishop Commercial Consulting Ltd | Professional & scientific | 2024 |
| Southlands Management Limited | Real estate | 1981 |
| Tablehunter Limited | Information & communication | 2021 |
| Teesside High School Limited | Education | 1956 |
| THE Courtyard (Preston Farm) Management Company Limited | Extraterritorial | 2010 |
| THE Great North Air Ambulance Service | Transport & logistics | 2002 |
| THE Hot Stone Grill Limited | Hospitality | 2024 |
| Theakston Estates Limited | Real estate | 1981 |
| Theakston-Laing Limited | Construction | 1978 |
| TOM Allen Plant Hire Ltd | Administrative & support | 2021 |
| Tomahawk Steakhouses (Newcastle) Limited | Hospitality | 2017 |
| Tomahawk Steakhouses Limited | Administrative & support | 2016 |
| VAG Performance Ltd | Wholesale & retail | 2020 |
| Warrior Property Limited | Real estate | 2017 |
| Yarm Brewery Ltd | Manufacturing | 2018 |
| Yarm Brewing and Distilling Co Ltd | Manufacturing | 2018 |
| Yarm Distillery Ltd | Manufacturing | 2018 |
| Yarm Homes Limited | Other services | 2005 |