| 22 Degree Building Services Ltd | Construction | 2026 |
| 29 Queen Street Limited | Real estate | 1988 |
| 2F Vending Ltd | Wholesale & retail | 2025 |
| 38 Fitness Limited | Arts & recreation | 2022 |
| 4C Lighting Solutions Ltd. | Manufacturing | 2024 |
| 4TINA Ltd | Hospitality | 2023 |
| 7 Mile Slice Ltd | Hospitality | 2025 |
| 80 Percent the Tattoo Narcotic Ltd | Wholesale & retail | 2025 |
| A & J Power Services Limited | Construction | 2024 |
| A and P Properties (NE) Ltd | Real estate | 2026 |
| A&A Properties NE Ltd | Real estate | 2023 |
| A.W Safety Services Ltd | Professional & scientific | 2022 |
| AA Propriete Limited | Real estate | 2021 |
| AAP Sales UK Ltd | Wholesale & retail | 2023 |
| AAP Welding and Fabrication Ltd | Manufacturing | 2025 |
| Aberdare-Mowbray Consultants Ltd | Professional & scientific | 2024 |
| AC &TM Ltd | Manufacturing | 2018 |
| Access Coatings Ltd | Construction | 2025 |
| Ace of Trades Construction Limited | Construction | 2024 |
| Ace Playce 2 B Ltd | Arts & recreation | 2012 |
| Acentra Contracting Ltd | Administrative & support | 2024 |
| Acro Property Management Ltd | Real estate | 2020 |
| AD Ventilation Limited | Manufacturing | 2006 |
| Adam 56 Ltd | Other services | 2023 |
| Adam Lamb Ltd | Manufacturing | 2020 |
| Adam Naylor Quantity Surveyor Limited | Construction | 2021 |
| Adavo Property LLP | | 2010 |
| Adda Co NE Ltd | Manufacturing | 2020 |
| ADS Direct Limited | Professional & scientific | 2006 |
| Advanced Inspection & Marine Services Limited | Professional & scientific | 2011 |
| Advanced Manufacturing Forum | Other services | 2006 |
| AEC Consulting Limited | Manufacturing | 2025 |
| Agcf Properties Ltd | Real estate | 2024 |
| Agile OKR Ltd | Professional & scientific | 2023 |
| Ahmad Property Development Ltd | Real estate | 2025 |
| Aimless.Tech CIC | Arts & recreation | 2019 |
| AJD Scaffolding Limited | Construction | 2018 |
| AJN Electricals Ltd | Construction | 2026 |
| AJR Crown Ltd | Hospitality | 2022 |
| Alan Hope Limited | Other services | 2014 |
| Alexandra Mason Limited | Wholesale & retail | 2020 |
| Alicanttech Limited | Professional & scientific | 2025 |
| Alle Pizzeria N Ltd | Hospitality | 2025 |
| Almeda Property Maintenance Limited | Real estate | 2021 |
| Alraafi Services Limited | Wholesale & retail | 2020 |
| Amcc Accountancy Services Ltd | Professional & scientific | 2017 |
| Ammt Limited | Manufacturing | 2015 |
| Anderson Medical Group Ltd | Health & social care | 2025 |
| Animal Rescue Funding 1 Ltd | Wholesale & retail | 2022 |
| Anmod Ltd | Professional & scientific | 2026 |
| ANT Mccormack Electrical Solutions Ltd | Construction | 2025 |
| Anthony Nichols Painting Blasting Ltd | Construction | 2019 |
| Anvilco Ltd | Wholesale & retail | 2020 |
| Aoit Networks Ltd | Information & communication | 2016 |
| Apesports Ltd | Professional & scientific | 2020 |
| APJ Projects Limited | Professional & scientific | 2018 |
| Apmn Access Solutions Ltd | Construction | 2024 |
| ARC EYE Solutions Ltd | Construction | 2025 |
| ARC Prop Maintenance Limited | Real estate | 2026 |
| Archer Pharma Solutions APS Ltd | Manufacturing | 2026 |
| Arya Leisure Limited | Hospitality | 2025 |
| Asbestos Awareness Certificate Company Ltd | Administrative & support | 2012 |
| Asbestos Specialists.Com Ltd | Administrative & support | 2009 |
| Ashbrooke Management Limited | Households | 2002 |
| Ashydev Ltd | Information & communication | 2025 |
| ASK Rail Limited | Transport & logistics | 2023 |
| Assthetics Apparel Limited | Wholesale & retail | 2021 |
| ASX Consult Limited | Construction | 2024 |
| AT Rope Access Ltd | Manufacturing | 2022 |
| Aura Rose Aesthetics Limited | Other services | 2021 |
| Aurea Travel Ltd | Administrative & support | 2026 |
| Austintacious Jewellery Ltd | Wholesale & retail | 2022 |
| Automan Driving Solutions Ltd | Education | 2025 |
| Auxillia Youth Services Community Interest Company | Education | 2018 |
| AVA Energy International Ltd. | Construction | 2015 |
| AVA Renewable Energy Limited | Construction | 2026 |
| Avatar Roofing Limited | Construction | 2026 |
| Avdec Properties Ltd | Real estate | 2024 |
| B & P Beverages Ltd | Wholesale & retail | 2017 |
| Bailey Will(S) Limited | Professional & scientific | 2023 |
| Bakeel Design Studio Ltd | Information & communication | 2025 |
| Baltic Building Systems Ltd | Construction | 2023 |
| Bamburgh Motors Ltd | Transport & logistics | 2025 |
| Bariboost Limited | Wholesale & retail | 2019 |
| Bciweldingservices Ltd | Professional & scientific | 2025 |
| BD Property Management (NE) Ltd | Real estate | 2021 |
| BE Modern Holdings Limited | Professional & scientific | 2006 |
| BE Modern Limited | Manufacturing | 1964 |
| BE Modern Properties Limited | Real estate | 2008 |
| BE Modern Trustee Limited | Financial services | 2026 |
| Beamish Rise Management Company Limited | Real estate | 2007 |
| Beard Strength Limited | Wholesale & retail | 2021 |
| Beaumont Fabrics Ltd | Manufacturing | 2014 |
| Beaumont Furniture Ltd | Manufacturing | 2023 |
| Bede Motor Company Limited | Wholesale & retail | 2019 |
| BEE Commercial Solutions Limited | Administrative & support | 2012 |
| Beem Electrical Ltd | Construction | 2022 |
| Behouseproud Furniture Specialists Limited | Wholesale & retail | 2011 |
| Behsa NE2 Ltd | Wholesale & retail | 2024 |
| Belfry (Whitley Bay) Management Company Limited | Households | 1999 |