| 1 Procom Ltd | Professional & scientific | 2015 |
| 1 Severn Trading Ltd | Hospitality | 2018 |
| 247 Surf Limited | Wholesale & retail | 2007 |
| 5C Services Ltd | Information & communication | 2004 |
| A E Gough & Sons Limited | Transport & logistics | 2014 |
| A Social Pro Ltd | Information & communication | 2024 |
| A.J Training and Consultancy Ltd | Professional & scientific | 2019 |
| Abbey Eggs Limited | Agriculture & fishing | 2015 |
| Ace Linen and Laundry Services Limited | Administrative & support | 2025 |
| Adrian George Ltd | Administrative & support | 2024 |
| Aeromechanics Limited | Professional & scientific | 1986 |
| Aetheric Ltd | Professional & scientific | 2024 |
| Aftershock Prints Ltd | Manufacturing | 2017 |
| Agricultural and Equine Services Limited | Manufacturing | 2013 |
| AJ Accountancy Limited | Professional & scientific | 1996 |
| AKS Systems Limited | Construction | 2016 |
| ALI Freeman Designs Limited | Professional & scientific | 2016 |
| Andrew Jenkins Plumbing & Heating Limited | Construction | 2017 |
| Andrew Oakley Limited | Administrative & support | 2004 |
| AO & TH Duggan Limited | Construction | 2008 |
| Apex Building Development Ltd | Real estate | 2025 |
| Arcus Compliance Limited | Professional & scientific | 2017 |
| Arcus Group Services Limited | Financial services | 2023 |
| Arcus Holdings Ltd | Financial services | 2021 |
| Arcus RP Services Limited | Professional & scientific | 2022 |
| ARG Motor Services Ltd | Wholesale & retail | 2018 |
| Arlais Health and Wellbeing CIC | Health & social care | 2025 |
| Arry's Plaice Limited | Hospitality | 2019 |
| Arvon TAP House Ltd | Hospitality | 2021 |
| Aryma Holdings Limited | Financial services | 2020 |
| Asaga Limited | Hospitality | 2016 |
| ASH Tree Caravan Park Ltd | Hospitality | 2008 |
| Automatic Fire Sprinklers Ltd | Construction | 2021 |
| Avail Quantity Surveying Limited | Professional & scientific | 2025 |
| AWC Plumbing & Heating Ltd | Construction | 2021 |
| Azora Cosmetics Limited | Wholesale & retail | 2020 |
| B a Morgan Limited | Transport & logistics | 2003 |
| B Shelley Limited | Transport & logistics | 2018 |
| Baylis Plastering Ltd | Construction | 2026 |
| Beacon & Pool Common Conservation CIC | Professional & scientific | 2020 |
| Beacons Bluff Limited | Hospitality | 2018 |
| Beaufort Management (Llandrindod) Limited | Households | 1995 |
| Belgrave (Llandrindod Wells) Limited | Households | 1984 |
| Bell House Properties Limited | Real estate | 2014 |
| BEW Design Ltd | Information & communication | 2022 |
| Bexnul Limited | Wholesale & retail | 2025 |
| BHC Entertainment Limited | Arts & recreation | 2024 |
| Birchwood Partnership Limited | Construction | 2009 |
| BMG Fabrications Limited | Wholesale & retail | 2025 |
| BN SHE Consultancy Ltd. | Professional & scientific | 2014 |
| Border Counties Motor Racing Club Limited | Arts & recreation | 1996 |
| Border Oak Design & Construction Limited | Construction | 1982 |
| Bp&A Limited | Professional & scientific | 2022 |
| Bracken Trust Limited | Health & social care | 1996 |
| Braehall Limited | Professional & scientific | 2016 |
| Brenin Adventures | Arts & recreation | 2018 |
| Brian Rees Training Limited | Information & communication | 2003 |
| British Series Limited | Arts & recreation | 2004 |
| Broadmead Management Limited | Households | 1992 |
| Broadway Towers Management Limited | Households | 1982 |
| Bromsgrove Rolling Road Ltd | Wholesale & retail | 2021 |
| Brookland Mews Management Company Limited | Professional & scientific | 2007 |
| Brynthomas Poultry Ltd | Wholesale & retail | 2025 |
| Busnant Holiday Park Limited | Hospitality | 2011 |
| Buttercup Poultry Limited | Agriculture & fishing | 2010 |
| Butterfill Flooring Limited | Construction | 2006 |
| C J Nowell Construction Ltd | Construction | 2021 |
| C.G.R.Properties Limited | Real estate | 1983 |
| CAE Llwyn Lodges Limited | Hospitality | 2016 |
| Caerfagu Products Limited | Agriculture & fishing | 1987 |
| Cambrian Mountains Initiative CIC | Administrative & support | 2014 |
| Cambrian Storage Solutions Limited | Transport & logistics | 2018 |
| Camlo Limited | Hospitality | 2025 |
| Capital Transport and Shipping (UK) Limited | Transport & logistics | 2025 |
| Carlyon Management (Llandrindod) Limited | Real estate | 2012 |
| Catch the EYE Ltd | Professional & scientific | 2009 |
| Cecil Lodge Owners Ltd | Households | 2020 |
| Cefnllyn Free Range Limited | Agriculture & fishing | 2006 |
| Cefnllys Limited | Information & communication | 2012 |
| Cefnllys Poultry Ltd | Wholesale & retail | 2025 |
| Cefnllys Property Co. Limited (the) | Construction | 1972 |
| Celfogwmpas | Arts & recreation | 1997 |
| Cerrigcochion Management Limited | Households | 2018 |
| Cervus Elaphus Ltd | Extraterritorial | 2009 |
| Ceryscreates Limited | Wholesale & retail | 2025 |
| Charlotte Church Ltd | Arts & recreation | 1999 |
| Cherry Tree Lodges and Stables Ltd | Other services | 2017 |
| Chick Flicks Ltd | Arts & recreation | 2003 |
| Chrysalis Housing Ltd. | Real estate | 2023 |
| Cilgee Cabins Ltd | Hospitality | 2021 |
| Cjpw Design Ltd | Construction | 2013 |
| Cleveland Place East Management Ltd | Real estate | 2009 |
| Colourhall Ltd | Wholesale & retail | 2025 |
| Country Kids Childcare (Builth Wells) Limited | Health & social care | 2021 |
| Country Life Activity Centre Ltd | Arts & recreation | 2018 |
| Countrywide Funeral Plans Limited | Other services | 2019 |
| Court View Management 2020 Limited | Real estate | 2020 |
| Craig Hamilton Architects Limited | Professional & scientific | 2003 |
| Craven Consortium Limited | Construction | 1986 |
| Create Play Community Interest Company | Education | 2019 |