| A & H Sweets & Soft Drinks Ltd | Wholesale & retail | 2003 |
| A C Lister Electrical Ltd | Construction | 2020 |
| A J T Groundcare Limited | Wholesale & retail | 2002 |
| A O Powell Limited | Agriculture & fishing | 2006 |
| A. J. Nestorow Design & Surveying Services Limited | Professional & scientific | 2003 |
| A.And H.F.(Pontypridd)Limited | Real estate | 1964 |
| AC Bronwin Ltd | Professional & scientific | 2020 |
| Action Plan Limited | | 1989 |
| Agrisure Limited | Professional & scientific | 1984 |
| Alan Williams GAS Services Limited | Construction | 2002 |
| Altiplano Limited | Agriculture & fishing | 1997 |
| Amberleigh Care Limited | Education | 2004 |
| Amegni Renewables Limited | Energy | 2006 |
| Andrew Barrett (Plumbing & Heating) Ltd | Construction | 2003 |
| Anne Marie Supercuts Limited | Other services | 2006 |
| Archiform Limited | Professional & scientific | 2006 |
| Aryma Limited | Manufacturing | 1998 |
| Autospray (Newbridge-On-Wye) Limited | Wholesale & retail | 2003 |
| Axis Architectural Services Limited | Professional & scientific | 2007 |
| Ayre Holidays Limited | Hospitality | 2023 |
| B.J. Aviation Limited | Transport & logistics | 1989 |
| Bananadesign Limited | Information & communication | 2007 |
| Berndales Limited | Manufacturing | 2013 |
| Berni Construction Limited | Construction | 2019 |
| Bethan Jones Project Management Limited | Professional & scientific | 2005 |
| Bethshan Sheltered Housing Association | Health & social care | 1997 |
| BHR Holdings Ltd | Professional & scientific | 2019 |
| Bias-Free Advice Limited | Hospitality | 2005 |
| Birchtree Developments Limited | Construction | 2018 |
| Birds Property Development Ltd | Construction | 2023 |
| BJ Property Maintenance Ltd | Administrative & support | 2003 |
| Boys & Boden, Limited | Manufacturing | 1926 |
| Brecon Boathouse Limited | Arts & recreation | 1978 |
| Brecon Engineering Supplies Limited | Manufacturing | 2004 |
| Brecon Motors (Distributors) Limited | Wholesale & retail | 1977 |
| Brecon Property Developments Ltd | Construction | 2005 |
| Brian Davies & SON Ltd | Wholesale & retail | 2003 |
| Brixton Pottery Limited | Wholesale & retail | 1990 |
| Bryndu Free Range Eggs Limited | Agriculture & fishing | 2005 |
| Buglass Energy Advisory Limited | Professional & scientific | 2015 |
| Builth Wells Garages Limited | Wholesale & retail | 1963 |
| Builth Wells Motor Club Limited | Arts & recreation | 2003 |
| Bulwark House Limited | Wholesale & retail | 2000 |
| C D T Sidoli (Welshpool) Limited | Manufacturing | 1982 |
| C H Bennett and SON Limited | Manufacturing | 2003 |
| C P Isaac Limited | Agriculture & fishing | 2006 |
| Cain Veterinary Centre Limited | Professional & scientific | 2003 |
| Caleb Roberts Financial Services Limited | Extraterritorial | 1984 |
| Caleb Roberts Insurance Services Limited | Financial services | 1981 |
| Callum Hughes Machinery Ltd | Manufacturing | 2020 |
| Cambrian Archaeological Projects Limited | Professional & scientific | 1997 |
| Cambrian Forge Limited | Manufacturing | 2003 |
| Carew Design Associates Limited | Professional & scientific | 2005 |
| Carlyle Roofing & Building Construction Ltd | Construction | 2020 |
| Cefn LEA Park Limited | Hospitality | 2003 |
| Centre for Alternative Technology Charity Limited | Other services | 1973 |
| Chameleon Services (UK) Limited | Real estate | 1995 |
| Charcroft Electronics Limited | Wholesale & retail | 1974 |
| Chilcott & Company Limited | Wholesale & retail | 2014 |
| China Yummy Limited | Hospitality | 2023 |
| Citizens' Mandate Ltd | Arts & recreation | 2023 |
| Cliff Walton & Sons Limited | Wholesale & retail | 2003 |
| Coch Y Bonddu Books Limited | Wholesale & retail | 2003 |
| Column Enterprises Limited | Wholesale & retail | 1996 |
| Community Arts Rhayader and District | Manufacturing | 1998 |
| Compton's Yard Charitable Trust(The) | Education | 1983 |
| Conservation Services Limited | Administrative & support | 2020 |
| Contact Attachments Limited | Manufacturing | 1979 |
| Contract Answers Limited | Professional & scientific | 2006 |
| Country Carpentry Ltd | Manufacturing | 2007 |
| Courier Service Wales Limited | Transport & logistics | 2005 |
| Court Contractors Limited | Construction | 2006 |
| CPL Property Developments Limited | Construction | 2021 |
| Crofton Road Ltd | Real estate | 2024 |
| CW Griffiths & Sons Limited | Transport & logistics | 2003 |
| Cyngor AR Bopeth Powys Citizens Advice Bureau | Other services | 2001 |
| D.T. Properties (Newtown) Limited | Construction | 2003 |
| Derek Gethin Limited | Transport & logistics | 2003 |
| Derwas of Welshpool Limited | Wholesale & retail | 1999 |
| Dilwyn Roberts - Ymgynghorwyr Consultants Limited | Real estate | 1994 |
| DLJ Limited | Agriculture & fishing | 2003 |
| DR and the Medics Limited | Information & communication | 2013 |
| DRJ Homes Limited | Construction | 2024 |
| DTB Farm Services Ltd | Agriculture & fishing | 2019 |
| Dufort Property Services Ltd. | Wholesale & retail | 2004 |
| Dulas Ltd | Professional & scientific | 1982 |
| Duncan Foulkes Public Relations Limited | Administrative & support | 2005 |
| Duraine Jones Limited | Manufacturing | 2002 |
| Durrow Limited | Professional & scientific | 2003 |
| Dyffryn Restaurant Limited | Hospitality | 2002 |
| E C Ashton & SON Limited | Wholesale & retail | 2016 |
| Eaglen Art & Design Limited | Professional & scientific | 2006 |
| Eastern Drilling Company Limited | | 1992 |
| Eastplace Property Co Limited | Real estate | 1962 |
| Eifionydd Farmers Limited | Extraterritorial | 1994 |
| ERD Engineering Inspections Limited | Professional & scientific | 2005 |
| Evans Cafe Limited | Hospitality | 2004 |
| Evans Fishbar Limited | Hospitality | 2003 |
| Evans Windows (Wales) Limited | Manufacturing | 1986 |
| Farm Financial Services Ltd | Professional & scientific | 2007 |