| 21ST Webb Ltd | Information & communication | 2015 |
| 360 Survey & Engineering Ltd | Construction | 2018 |
| A & D Motorcycles Limited | Wholesale & retail | 1997 |
| A & J Kitchens & Bathrooms Limited | Wholesale & retail | 2005 |
| A & S OFF Licence Ltd | Wholesale & retail | 2025 |
| A Owen CYF | Agriculture & fishing | 2008 |
| A-A Automotive Ltd | Wholesale & retail | 2012 |
| Abbey Rentals Limited | Real estate | 1999 |
| Aberwaen Landscape Consultancy Limited | Administrative & support | 2026 |
| Abigail's Dog Walking and Pet Services Ltd | Other services | 2021 |
| Accredilink Community Response Taskforce CYF | Health & social care | 2020 |
| Activities for YOU C.I.C. | Health & social care | 2022 |
| Addysg Dewi Education CYF | Education | 2021 |
| Adjustamatic Beds Limited | Wholesale & retail | 1982 |
| Advanced Rental Limited | Administrative & support | 2013 |
| Aerial Arborists Ltd | Administrative & support | 2015 |
| Aerials-Nw Ltd | Construction | 2026 |
| Affpas Limited | Real estate | 2018 |
| Africa Growth Industries Exchange (Agix Africa) Ltd | Information & communication | 2025 |
| Alchemy Crypto Loans LLP | | 2024 |
| ALH Forestry Ltd | Agriculture & fishing | 2023 |
| Alls Consultancy Ltd | Professional & scientific | 2018 |
| Allure Aesthetics and Training Ltd | Other services | 2020 |
| Alton Murphy (Opticians) Limited | Wholesale & retail | 1974 |
| Amber Nails Denbigh Ltd | Other services | 2025 |
| AMH Film & Television Services Ltd | Information & communication | 2006 |
| Anchron LLP | | 2026 |
| Animus Translations Limited | Professional & scientific | 2012 |
| Anthony Dever Construction Limited | Construction | 2003 |
| Applied Microfacies Limited | Other services | 2013 |
| Arbe Property Ltd | Real estate | 2026 |
| Archron LLP | | 2026 |
| Ardro CYF | Professional & scientific | 2006 |
| Aries Upvc Ltd | Other services | 2023 |
| Arvier Ltd | Hospitality | 2016 |
| Asparta Limited | Professional & scientific | 2024 |
| Atlantes Properties Limited | Real estate | 2026 |
| Atlantic Co. Ltd | Information & communication | 2018 |
| Avalanche Business Support Limited | Professional & scientific | 2025 |
| Avicii Limited | Wholesale & retail | 2017 |
| Aztaka Limited | Other services | 2019 |
| B&H Trading Technologies Ltd | Information & communication | 2025 |
| BAA Stool Limited | Wholesale & retail | 2015 |
| Bar Bont Ltd | Hospitality | 2025 |
| Bathing Beauty Ltd | Manufacturing | 2015 |
| BBM Bargain Denbigh Limited | Wholesale & retail | 2025 |
| Beach Body Studio Limited | Arts & recreation | 2015 |
| Bella Medispa Ltd | Other services | 2021 |
| Bellwether Developments (Wales) Limited | Real estate | 2024 |
| BEN Lacy (Rentals) LLP | | 2010 |
| Benj's Boards and Beams Ltd | Agriculture & fishing | 2025 |
| Bentley Haldane Ltd | Administrative & support | 2025 |
| Beti Bach Limited | Administrative & support | 2024 |
| Beyond Beautiful Limited | Other services | 2023 |
| Bio-Fert Wales Ltd | Agriculture & fishing | 2013 |
| BLF Drive Limited | Transport & logistics | 2024 |
| Blind Solutions Limited | Manufacturing | 2015 |
| Bodfari Environmental Limited | Professional & scientific | 2018 |
| Bodfari Taxation Ltd | Professional & scientific | 2014 |
| Brady Global Ltd | Wholesale & retail | 2011 |
| Brillcare Limited | Health & social care | 2022 |
| Bronyffynnon Surgery Limited | Health & social care | 2014 |
| Brotherhood of Dads CIC | Health & social care | 2026 |
| Bryn Rock Records Ltd | Manufacturing | 2019 |
| Brîg Barbers Limited | Other services | 2025 |
| Bubble & Squeak Ltd | Administrative & support | 2022 |
| Building Your Confidence Limited | Health & social care | 2024 |
| Business Listing Group Limited | Information & communication | 2019 |
| Bwyd Cymunedol Dinbych - Denbigh Community Food CIC | Hospitality | 2025 |
| Byere Design Limited | Professional & scientific | 2023 |
| Byzas Research Limited | Professional & scientific | 2017 |
| C J Electrics (North Wales) Ltd | Construction | 2008 |
| CAE DAI 1950'S Museum Limited | Arts & recreation | 2024 |
| CAE Sally Animal Rescue Ltd | Agriculture & fishing | 2024 |
| Canary Designs Ltd | Manufacturing | 2011 |
| Capel Prion Limited | Construction | 2025 |
| Care Sector Training Limited | Education | 2011 |
| Carnatic Development Ltd | Construction | 2019 |
| Carpenter Davies Partnership Holdings Limited | Financial services | 2018 |
| Carpenter Davies Partnership Limited | Professional & scientific | 2005 |
| Carpet Emporium (North Wales) Limited | Wholesale & retail | 2017 |
| Cartref Mortgages Limited | Financial services | 2016 |
| Catalyst Systems (North Wales) Limited | Administrative & support | 2000 |
| Cattell Brothers Limited | Agriculture & fishing | 1953 |
| Cavill and Co Holdings Limited | Real estate | 2025 |
| Ceffyl a Charn CYF | Wholesale & retail | 2017 |
| Cerdd Cydweithredol Gogledd Cymru/North Wales Music Co Operative Ltd | Education | 2015 |
| Charge HER UP Limited | Other services | 2025 |
| Chen LIN Restaurant Ltd | Hospitality | 2017 |
| Church House (Lymington) Management Company Limited | Real estate | 2024 |
| City Travel and Tours Limited | Administrative & support | 2013 |
| CJW Holdings Limited | Financial services | 1996 |
| Clare Craven Architecture LLP | | 2008 |
| Classic and Custom Restoration Ltd | Wholesale & retail | 2021 |
| Clean Domains Ugur Ltd | Administrative & support | 2020 |
| Clwyd Concrete Co.Limited | Manufacturing | 1954 |
| Clwyd Garden & Landscape Limited | Administrative & support | 2022 |
| Clwyd Vape Wholesale Ltd | Wholesale & retail | 2025 |
| Clwyd Window Cleaning Ltd. | Administrative & support | 2018 |
| Clwydian Design Ltd | Information & communication | 2019 |