| 1ST FIX Systems Ltd. | Wholesale & retail | 1999 |
| AJR Building and Electrical Solutions Ltd | Construction | 2018 |
| ALL in One Building Solutions Ltd | Construction | 2021 |
| AMR (NE) Limited | Real estate | 2006 |
| Apex Plant Solutions Ltd | Administrative & support | 2025 |
| BAD Bohemian Ltd | Information & communication | 2023 |
| Bradley's Auto Repairs Ltd | Wholesale & retail | 2025 |
| Brit Cars Servicing Limited | Wholesale & retail | 2024 |
| CA Developments (NE) Limited | Real estate | 2015 |
| CFS Builders Ltd | Construction | 2025 |
| Clean Break North East Ltd | Administrative & support | 2023 |
| Dcjj Limited | Arts & recreation | 2021 |
| Destination BCN Ltd | Manufacturing | 2016 |
| DH1 Lettings & Sales Limited | Real estate | 2008 |
| Dive Into History Ltd | Information & communication | 2021 |
| Durham Diagnostic Centre Ltd | Wholesale & retail | 2020 |
| Durham Scenic Workshops Limited | Arts & recreation | 2013 |
| EJB Joinery Ltd | Construction | 2023 |
| Electronet Automation Limited | Manufacturing | 2001 |
| Elvana Music Limited | Arts & recreation | 2017 |
| First Stop 4 Signs Limited | Manufacturing | 2020 |
| GBM Accountants Limited | Professional & scientific | 2021 |
| Granulator & Blade Services Ltd | Professional & scientific | 2021 |
| Greasecycle Ltd | Water & waste | 2024 |
| HND Holdings Limited | Financial services | 2025 |
| KD Commercial Property Limited | Real estate | 2025 |
| KD Plant Services Limited | Construction | 2009 |
| Kulasegaram Limited | Wholesale & retail | 2017 |
| M-Tech Engineering (North East) Ltd | Professional & scientific | 2023 |
| Maintain - Solutions Limited | Construction | 2011 |
| MLG Roofing & Cladding Ltd | Construction | 2019 |
| MOS Wellness Ltd | Health & social care | 2022 |
| Northern Edge Property Investments Ltd | Real estate | 2024 |
| NPH Property Ltd | Real estate | 2024 |
| Parker - HAY Limited | Wholesale & retail | 2021 |
| Poleguns & Aerials Limited | Arts & recreation | 2022 |
| Prinnovate Ltd | Wholesale & retail | 2023 |
| RH Blasting Limited | Manufacturing | 2022 |
| Richard Shepherd Construction Limited | Construction | 2020 |
| Roni's Ponies Equestrian Ltd | Wholesale & retail | 2023 |
| Sacriston Hand Carwash R Ltd | Administrative & support | 2026 |
| Scorpio Security North East Limited | Administrative & support | 2019 |
| Skin Universe Ltd | Other services | 2025 |
| Spice Street Ltd | Hospitality | 2025 |
| Spicy Moments Sacriston Ltd | Hospitality | 2024 |
| Stigys Place Limited | Wholesale & retail | 2024 |
| Thai at Crossroads Inn Sacriston Limited | Hospitality | 2026 |
| THE Landlord Lounge Ltd | Wholesale & retail | 2024 |
| Winter Living Ltd | Real estate | 2026 |