| 1 Automotive Group Ltd | Wholesale & retail | 2025 |
| 3 Automotive Group Limited | Professional & scientific | 2025 |
| 3 Property Investments Limited | Financial services | 2022 |
| 39-49 Hanover Drive RTM Company Limited | Households | 2020 |
| 87-97 Hanover Drive Management Limited | Real estate | 1998 |
| A Space Between C.I.C. | Health & social care | 2019 |
| A.Carmichael Ltd | Manufacturing | 2016 |
| A.S. Motor Repairs Limited | Wholesale & retail | 2016 |
| A.W.T. Holdings (NE) Limited | Real estate | 2026 |
| A2Z of FM Group Limited | Public administration | 2022 |
| AA Residences Ltd | Real estate | 2022 |
| AA Xpress Ltd | Transport & logistics | 2019 |
| Abiye Properties Ltd | Real estate | 2025 |
| Accessible Counselling, Psychotherapy and Supervision Limited | Health & social care | 2013 |
| Accounting for Good CIC | Professional & scientific | 2018 |
| Accounts and Order Limited | Information & communication | 2021 |
| Acorn Engineering and Fabrications Ltd | Manufacturing | 2023 |
| AF and H Minibuses Ltd | Transport & logistics | 2025 |
| Akwaaba Care and Support Ltd | Health & social care | 2022 |
| Allact Ltd | Real estate | 2002 |
| ALM Storm Limited | Professional & scientific | 2020 |
| Almax Security Chains Limited | Manufacturing | 2003 |
| Alpa Holdings Limited | Real estate | 2020 |
| Alpine Watch Supply Ltd | Wholesale & retail | 2021 |
| Alum Railings Ltd | Manufacturing | 2016 |
| AM Access Repairs Ltd | Manufacturing | 2025 |
| Amberlex Ltd | Hospitality | 2023 |
| Amow Catering Limited | Hospitality | 2005 |
| Amron Windows and Doors Limited | Construction | 2011 |
| AMY Ions Ltd | Other services | 2021 |
| Anteamonn Limited | Wholesale & retail | 2025 |
| Apollo Print Solutions Limited | Manufacturing | 2017 |
| Appleby Property Investments Ltd | Real estate | 2022 |
| Arcwyn Ltd | Professional & scientific | 2020 |
| Ario Electrical Ltd | Construction | 2023 |
| Arjan Bistro Ltd | Hospitality | 2026 |
| Ashton Vehicle Movements Ltd | Transport & logistics | 2018 |
| Association of Technical Monitoring Agents (Atma) Ltd | Professional & scientific | 2025 |
| Astontex Limited | Other services | 2018 |
| AT 1 Utilities Limited | Professional & scientific | 2014 |
| B&D Barbers Blaydon Ltd | Other services | 2025 |
| B.K.S Scaffolding NE Ltd | Construction | 2025 |
| Bagfree AAX Ltd | Transport & logistics | 2025 |
| Balba North East Limited | Wholesale & retail | 2013 |
| Bambrush Ltd | Wholesale & retail | 2025 |
| BB Investments (North East) Ltd | Administrative & support | 2013 |
| BBC Electrical Wholesalers Limited | Manufacturing | 2014 |
| Beadnell Bay Cottage Limited | Real estate | 2021 |
| Beckleberrys (Retail) LLP | | 2007 |
| Beckleberrys Limited | Manufacturing | 2005 |
| Bells Waste Disposal Ltd | Water & waste | 2018 |
| Berners Home Limited | Wholesale & retail | 2012 |
| BHG Smith Limited | Administrative & support | 2025 |
| Bibby NE Limited | Administrative & support | 2016 |
| Bindy Ltd | Real estate | 2018 |
| Bitner Ltd | Professional & scientific | 2021 |
| Blaydon Barber Limited | Other services | 2017 |
| Blaydon Bathroom Electricals Limited | Construction | 2022 |
| Blaydon Bathrooms Limited | Wholesale & retail | 2019 |
| Blaydon Body Shop Limited | Wholesale & retail | 2025 |
| Blaydon Bridge Cars Ltd | Wholesale & retail | 2025 |
| Blaydon Music Academy Ltd | Education | 2023 |
| Blaydon Nails Ltd | Other services | 2021 |
| Blaydon Scaffolding Services Limited | Construction | 2023 |
| Blaydon Turkish Barber Limited | Other services | 2023 |
| Blendko Limited | Wholesale & retail | 2024 |
| BMA Trade Ltd | Wholesale & retail | 2025 |
| Boho Beauty Ltd | Other services | 2024 |
| Bowmangroup(Uk) Ltd | Administrative & support | 2022 |
| Boxxd Fitness Ltd | Arts & recreation | 2023 |
| BP Building Services Ltd | Construction | 2023 |
| Bream Professional Services Limited | Real estate | 2012 |
| Budget Topsoil & Aggregates Limited | Wholesale & retail | 2026 |
| Building Insulation Roofing Design Limited | Construction | 2026 |
| Buildtech Solutions UK Ltd | Information & communication | 2025 |
| Business Smart Suite Limited | Professional & scientific | 2025 |
| C & G Services Ltd | Administrative & support | 2020 |
| C.F.Motoring Services Ltd | Wholesale & retail | 1995 |
| CA Property & Developments Limited | Construction | 2026 |
| CA Retail Group Limited | Wholesale & retail | 2024 |
| CAI FU 26 Limited | Hospitality | 2026 |
| Cakeaholics by Claire Ltd | Wholesale & retail | 2025 |
| Calibration & Testers UK (Northern) Ltd | Households | 2016 |
| Carlton Hill Properties Limited | Real estate | 1996 |
| Carnyx Properties Ltd | Real estate | 2025 |
| Casey Atlantic Group Limited | Financial services | 2025 |
| Catkin Cottage Limited | Real estate | 2021 |
| CBC (Oxford 1) Management Company Limited | Real estate | 2005 |
| CCS Electrical and Power Solutions Ltd | Construction | 2025 |
| Chapter One Hundred and One Ltd | Information & communication | 2021 |
| Chargemarker Limited | Professional & scientific | 1998 |
| Cheeky Duck Ltd | Hospitality | 2024 |
| Cherissa Ltd | Manufacturing | 2025 |
| CJJ Fabrication Ltd | Manufacturing | 2016 |
| Clayton Installations Ltd | Construction | 2026 |
| Cldra Ltd | Construction | 2025 |
| Click Alliance Ltd | Professional & scientific | 2021 |
| Climb North East Limited | Arts & recreation | 2016 |
| CLK Print Ltd | Manufacturing | 2022 |
| CLK Stor Ltd | Wholesale & retail | 2023 |