| 17242612 Ltd | Agriculture & fishing | 2026 |
| 23 River Street Rhyl Limited | Health & social care | 2019 |
| 236 High Street Ltd | Hospitality | 2010 |
| 28 Estates Ltd | Real estate | 2025 |
| 38.6 Support Service Ltd | Administrative & support | 2026 |
| 3D Metrology Solutions Ltd | Professional & scientific | 2022 |
| 40NORTH UK Limited | Education | 2024 |
| 42 DHR Solutions Ltd | Professional & scientific | 2020 |
| 4SC Limited | Information & communication | 1998 |
| 8/4 Cafe and Bake House Limited | Hospitality | 2020 |
| 85RHYL Barber Shop Ltd | Other services | 2025 |
| A & K Autos North Wales Ltd | Wholesale & retail | 2015 |
| A & T Holiday Sites Ltd | Hospitality | 2024 |
| A C Electrical & Security Limited | Construction | 2008 |
| A J Lloyd Asset Management Ltd. | Extraterritorial | 2019 |
| A K B D Ltd. | Health & social care | 2009 |
| A&B Hotel and Leisure Retreats Limited | Hospitality | 2025 |
| A5 Resource and Logistic Solutions Ltd | Manufacturing | 2015 |
| AAA Mobiles & Computers Limited | Wholesale & retail | 2023 |
| AB Hinc Limited | Professional & scientific | 2005 |
| Abacus Furniture Fittings Limited | Wholesale & retail | 1995 |
| ABC TV Ltd | Extraterritorial | 2013 |
| Abdabs Furniture and Furnishings Limited | Wholesale & retail | 2010 |
| Aber Mechanical Services CYF | Construction | 2024 |
| Absolute Crepe Ltd. | Hospitality | 2024 |
| Absolute Travel North West Limited | Transport & logistics | 2024 |
| Absolutely Paid Media Ltd | Professional & scientific | 2025 |
| AC Accountancy & Consultancy Limited | Professional & scientific | 2023 |
| Action for Africa SL Limited | Wholesale & retail | 2018 |
| Acuity Products Limited | Professional & scientific | 2008 |
| Acuity Ultrasonics Limited | Extraterritorial | 2018 |
| Adam 2024 Limited | Hospitality | 2024 |
| Adams Holdings (N. Wales) Limited | Financial services | 2021 |
| Aedc Ltd | Administrative & support | 2005 |
| Aeromap Drone Surveys Ltd | Administrative & support | 2024 |
| Ahhp Limited | Construction | 2025 |
| AIO Property Limited | Real estate | 2026 |
| Aitch Aerospace Limited | Professional & scientific | 2008 |
| AJ Sparks Limited | Construction | 2016 |
| AJ Window Cleaning Services Ltd | Administrative & support | 2021 |
| AJB Property Maintenance Ltd | Construction | 2024 |
| AK 68 Ltd | Hospitality | 2018 |
| Aksh Private Ltd | Wholesale & retail | 2025 |
| Akshayaguna Ventures Ltd | Wholesale & retail | 2026 |
| Alastair House Limited | Health & social care | 2014 |
| ALI Kebab NW Ltd | Hospitality | 2025 |
| ALI Raza&Co Ltd | Wholesale & retail | 2026 |
| ALL Goods Central Ltd | Wholesale & retail | 2026 |
| All-Serv Heating & Electrical Ltd | Construction | 2020 |
| Allen & Smith Metal Recycling Ltd | Wholesale & retail | 2025 |
| Allen Industrial Limited | Professional & scientific | 1994 |
| Allen’S Housing Ltd | Real estate | 2025 |
| Allied Claims Management Ltd | Other services | 2015 |
| Allmark Limited | Extraterritorial | 2000 |
| Allpets Veterinary Clinic Limited | Professional & scientific | 2015 |
| Alltrades Commercial Property Services Limited | Construction | 2017 |
| Almavcare Limited | Health & social care | 2024 |
| Alp&Ley Limited | Hospitality | 2022 |
| Alpha Print NW Ltd | Manufacturing | 2019 |
| Altitude Scaffolding North Wales Ltd | Construction | 2015 |
| AMS Woodwork Ltd | Manufacturing | 2023 |
| Anchin Rugs Limited | Wholesale & retail | 2014 |
| ANT Gallagher Media Limited | Information & communication | 2023 |
| Apex Travel Concierge Limited | Administrative & support | 2026 |
| APW Electrical Services Limited | Construction | 2003 |
| Aqua-Holic Cleaning Limited | Administrative & support | 2024 |
| Arbabs Collection Ltd | Wholesale & retail | 2025 |
| Archer Industrial Technologies Ltd | Professional & scientific | 2026 |
| Arduis Fidelis Consultancy Ltd | Professional & scientific | 2024 |
| Arthur Owen Properties Limited | Real estate | 2019 |
| Arthur Owen Removals and Storage Ltd | Other services | 2018 |
| Artisian Ltd | Hospitality | 2024 |
| Ashwin Convenience Store Limited | Wholesale & retail | 2014 |
| Ashwin Enterprise Ltd | Real estate | 2020 |
| Aslans Kebab Ltd | Hospitality | 2024 |
| Astleelets Ltd | Hospitality | 2024 |
| ATD Rendering & Property Maintenance Ltd | Construction | 2025 |
| Atitima Ltd | Professional & scientific | 2016 |
| Atom Scaffolding Supplies Ltd | Administrative & support | 2024 |
| Attirecare Ltd | Wholesale & retail | 2018 |
| Autobarn-Carsales Ltd | Wholesale & retail | 2022 |
| Autocare Rhyl Ltd | Professional & scientific | 2022 |
| Automation Flow Limited | Information & communication | 2023 |
| Automation Nation Limited | Administrative & support | 2021 |
| Axiom Legal Solutions Ltd | Professional & scientific | 2026 |
| Azttec Limited | Manufacturing | 2016 |
| B Fusion Ltd | Hospitality | 2022 |
| B L Williams Renewables Limited | Construction | 2024 |
| B P Lloyd Asset Management Ltd | Extraterritorial | 2019 |
| B-Yoga Studio Ltd | Arts & recreation | 2024 |
| B.P.P.A. Limited | Professional & scientific | 2000 |
| B3 Sky Ltd | Wholesale & retail | 2025 |
| Bangor Centre for Developmental Disabilities Limited | Health & social care | 2001 |
| Bangor Takeaway Limited | Hospitality | 2023 |
| Bartipsy Limited | Administrative & support | 2025 |
| Baysville Limited | Hospitality | 2022 |
| Baytrex Limited | Arts & recreation | 1989 |
| Beauchester Estates Limited | Real estate | 2016 |
| Bedford Street Community Company Ltd | Other services | 2007 |
| BEE Green Energy Leads Ltd | Professional & scientific | 2023 |