| 10ENT. Limited | Professional & scientific | 2023 |
| 5FLOOR321 Direct Limited | Wholesale & retail | 2020 |
| 64 Marketing Ltd | Wholesale & retail | 2024 |
| A & R Convenience Ltd | Wholesale & retail | 2025 |
| A C Products and Holdings Limited | Manufacturing | 2025 |
| A Howe Comms Limited | Information & communication | 2009 |
| A.C. Engineering (North East) Limited | Manufacturing | 1999 |
| A1 Recovery & Dismantlers Ltd | Water & waste | 2009 |
| A1 Storage Division Ltd | Transport & logistics | 2026 |
| A2B MOT Bedlington Limited | Wholesale & retail | 2022 |
| Abilitrain Ltd | Education | 2023 |
| ACB Services Ltd | Construction | 2025 |
| Ace First AID Supplies Ltd | Wholesale & retail | 2012 |
| ACI Trust Construction Limited | Construction | 2014 |
| Adam Barber Shop Ltd | Other services | 2020 |
| Adams Bakehouse Limited | Manufacturing | 2021 |
| Adriatic Sea Limited | Hospitality | 2020 |
| Agrivise UK Limited | Agriculture & fishing | 2016 |
| AJC Engineering Ltd | Professional & scientific | 2021 |
| Ajwaa Cuisine Ltd | Hospitality | 2023 |
| Akbirch Eleicsctr Ltd | Administrative & support | 2017 |
| AL1 Limited | Real estate | 2018 |
| Alarms Cameras & Access Control Systems Limited | Manufacturing | 2011 |
| Alcala Ltd | Professional & scientific | 2015 |
| ALN Euro-Consult Ltd | Professional & scientific | 2017 |
| Amor Events Ltd | Hospitality | 2015 |
| AMS Systems 2012 Ltd | Information & communication | 2012 |
| AN Minh Limited | Other services | 2021 |
| Anderson Nursing Limited | Health & social care | 2018 |
| AR Best Foods Ltd | Wholesale & retail | 2015 |
| Areteco Limited | Wholesale & retail | 2024 |
| Armstrong Technical Servces (North East) Limited | Professional & scientific | 2024 |
| Aryan Retail Stores (UK) Limited | Wholesale & retail | 2023 |
| Ashianna Northumberland Ltd | Hospitality | 2019 |
| Attina Car Wash Ltd | Wholesale & retail | 2025 |
| Aurapane Ltd | Manufacturing | 2025 |
| Avenue Barbering & Male Image Limited | Other services | 2022 |
| AWS Bolting Limited | Construction | 2017 |
| AZ Flange Management Limited | Extraterritorial | 2015 |
| B. K. S. Mechanical Services Ltd | Wholesale & retail | 2017 |
| Barrington Metal Works Limited | Manufacturing | 1992 |
| Barrington Storage Limited | Real estate | 2021 |
| BBS Structural Glazing Ltd. | Wholesale & retail | 2014 |
| Beatties Bar Ltd | Hospitality | 2024 |
| Beatty Road 1963 Limited | Extraterritorial | 2015 |
| Bebside Commercials Limited | Wholesale & retail | 2024 |
| Bedlington Autocare NE Ltd | Wholesale & retail | 2024 |
| Bedlington Cafe Ltd | Hospitality | 2026 |
| Bedlington Football Factory CIC | Arts & recreation | 2023 |
| Bedlington Locksmiths Ltd | Construction | 2023 |
| Bedlington Masonic Buildings Limited | Other services | 1977 |
| Bedlington Telecommunications Limited | Extraterritorial | 2017 |
| Bedlington Terriers FC 2022 C.I.C. | Arts & recreation | 2022 |
| Bedlington Terriers Football Club C.I.C. | Arts & recreation | 2013 |
| Bedlingtonshire Development Trust | Other services | 2010 |
| Beikou Hockey Limited | Wholesale & retail | 2019 |
| Bell Civils Ltd | Construction | 2024 |
| Bestbite (Bedlington) Limited | Hospitality | 2017 |
| BGC Bar & Catering Limited | Hospitality | 2016 |
| BGC Street Food Ltd | Hospitality | 2019 |
| BIX Ecotech Ltd | Wholesale & retail | 2009 |
| BKA Engineering Ltd | Construction | 2025 |
| Blackett Brothers Ltd | Construction | 2014 |
| Blackthorn Timber Limited | Other services | 2015 |
| Blackthorn Timber Windows (NE) Limited | Construction | 2009 |
| Blanche Property Ltd | Real estate | 2025 |
| Bluefield Geoservices Ltd | Professional & scientific | 2018 |
| Bmcm Property Ltd | Real estate | 2026 |
| Bother Investments Ltd | Real estate | 2019 |
| Bowlt Homes Limited | Construction | 2014 |
| Boyle Brothers Leisure Limited | Real estate | 2026 |
| Boyle Mech Services Ltd | Wholesale & retail | 2023 |
| Brio Desserts Ltd | Wholesale & retail | 2022 |
| Briona Properties Ltd | Real estate | 2019 |
| Bronze 2 Beauty Limited | Other services | 2022 |
| Buddhas & Wellness Limited | Arts & recreation | 2022 |
| Bull & Stag Bespoke Ltd | Construction | 2022 |
| BY Wendy Ltd | Wholesale & retail | 2012 |
| C & W Properties Limited | Households | 2024 |
| C Gibbon Facility Solutions Ltd | Manufacturing | 2017 |
| C.M.C.C. Limited | | 1986 |
| Calmer Therapy Limited | Health & social care | 2016 |
| Carlisle Roofers Ltd | Construction | 2025 |
| Castle and Country Dog Training Ltd | Wholesale & retail | 2015 |
| Cattell Brickwork Ltd | Construction | 2022 |
| Cavagin Properties Ltd | Real estate | 2026 |
| Caz's Laundry Services Ltd | Other services | 2026 |
| CDB 19 Ltd | Construction | 2020 |
| Central Delivery Services Ltd | Transport & logistics | 2024 |
| Chahal Stores Limited | Wholesale & retail | 2012 |
| Challen Property & Maintenance Ltd | Construction | 2026 |
| Charlotte Elizabeth Weddings Ltd | Administrative & support | 2025 |
| Chef Marley Ltd | Hospitality | 2025 |
| Chef Mcteer Limited | Hospitality | 2024 |
| Chequelink Limited | Financial services | 2011 |
| Cherished Properties Ltd | Real estate | 2026 |
| Cherryits Ltd | Information & communication | 2025 |
| Chic Hair & Beauty Ltd. | Other services | 2002 |
| Chinchilla Pizzeria (Bedlington) Limited | Hospitality | 2020 |
| Choysez | Health & social care | 2001 |