| Moto Challenge Limited | Arts & recreation | 2003 |
| Natsol Limited | Administrative & support | 2005 |
| Neil Simkin Dentistry Limited | Health & social care | 2022 |
| Nerak-Wiese Limited | Manufacturing | 1992 |
| Nidec Control Techniques Limited | Manufacturing | 1975 |
| Nidec Industrial Automation UK Limited | Professional & scientific | 1978 |
| O G W (Builders) Limited | Construction | 2005 |
| Offa Developments Limited | Construction | 1997 |
| Office Enterprises Limited | Professional & scientific | 1983 |
| Open Sky Computing Limited | Information & communication | 1998 |
| Oriel Davies Gallery | Arts & recreation | 1993 |
| Owen Brothers Contractors Limited | Administrative & support | 2002 |
| Parc Farm & Minafon Caravan Parks Limited | Hospitality | 2002 |
| Paul Exton Associates Limited | Professional & scientific | 2002 |
| Paymán Holdings 4 Ltd | Hospitality | 2020 |
| PCQ Solutions Limited | Manufacturing | 2000 |
| Penoyre Ltd | Real estate | 2025 |
| Peter Jacks Butchers Ltd | Wholesale & retail | 2003 |
| Phil Williams Haulage Limited | Transport & logistics | 2003 |
| Philip Moore Transport Ltd | Transport & logistics | 2005 |
| Phillip Davies Construction Limited | Construction | 2003 |
| Phils Tool Hire Limited | Administrative & support | 2000 |
| Pick of the People Ltd | Extraterritorial | 2017 |
| Pike Zaremba Ltd. | Financial services | 1994 |
| PJ Engineering Consultants Limited | Construction | 2000 |
| Powys Caravans Limited | Wholesale & retail | 2005 |
| Powys Factors Limited | Wholesale & retail | 2003 |
| Powys Properties Limited | Real estate | 1998 |
| Powys Stone Supplies Limited | Mining & quarrying | 2006 |
| Powys Transport Limited | Transport & logistics | 1974 |
| Prince & Pugh (Knighton) Limited | Wholesale & retail | 1989 |
| Proactive Adventure Ltd | Health & social care | 2007 |
| Progressive Products Limited | Wholesale & retail | 1992 |
| Pryce Roberts Limited | Construction | 2005 |
| Quality Pipe Supports (Q.P.S.) Limited | Manufacturing | 1991 |
| R a Evans Limited | Construction | 2010 |
| R.H.Bunner & SON Limited | Wholesale & retail | 1959 |
| R.V.W. Pugh Ltd. | Wholesale & retail | 1998 |
| Radnor Hills Limited | Extraterritorial | 1996 |
| Radnor Hills Mineral Water Company Ltd | Manufacturing | 1996 |
| Radnorshire Fine Arts Limited | Wholesale & retail | 2007 |
| Rees Plant & Machinery Ltd | Wholesale & retail | 2018 |
| Reid-Weavers Limited | Real estate | 2006 |
| Response - Forest Lodge Limited Partnership | | 1991 |
| Rhiew Banc Limited | Agriculture & fishing | 2005 |
| Richard Edwards Haulage Limited | Transport & logistics | 2003 |
| Richdon KOI Ltd | Wholesale & retail | 2008 |
| ROB Astley Trailers Limited | Manufacturing | 2006 |
| ROB Hughes Steel Fabrication & Fixing Limited | Manufacturing | 2003 |
| Royal Welsh Agricultural Society Limited(The) | Other services | 1966 |
| Rural Developments (Brecon) Limited | Construction | 1990 |
| S J Tourism Limited | Hospitality | 2016 |
| Saeth & Co Ltd | Agriculture & fishing | 2026 |
| School House (Llanwrtyd Wells) Limited | Households | 2001 |
| Scorpiosongs Limited | Information & communication | 1999 |
| SDW Construction Limited | Construction | 2007 |
| Seconds and Co Limited | Extraterritorial | 2011 |
| Selclene Essex Limited | Administrative & support | 2000 |
| Shani Rhys James Ltd | Arts & recreation | 2014 |
| Shropshire Grain Limited | Extraterritorial | 1980 |
| Sillitoe Properties Limited | Construction | 2003 |
| Simon J Biggs Limited | Professional & scientific | 2007 |
| SJS Building Services Ltd | Construction | 2008 |
| Sketchydog Limited | Hospitality | 2007 |
| Smallduty Limited | Hospitality | 1998 |
| Special Branch Utilities Limited | Agriculture & fishing | 2005 |
| Spinarett Ltd | Other services | 2005 |
| Spud Productions Limited | Professional & scientific | 2022 |
| ST. Mary's Bakery Limited | Manufacturing | 2004 |
| STA Supplies Ltd | Manufacturing | 2001 |
| Steve Jones Sandblasting Limited | Construction | 2003 |
| STH Contractors Ltd | Construction | 2016 |
| T Ellis & J K Ellis LLP | | 2015 |
| T. Alun Jones Limited | Transport & logistics | 1975 |
| Tasher Property Co.Limited | Real estate | 1957 |
| Taylor Atlantic Limited | Wholesale & retail | 2003 |
| Technical Documentation Ltd | Information & communication | 2019 |
| THE Institute of Art and Law Limited | Information & communication | 1999 |
| THE Judge's Lodging Trust Limited | Arts & recreation | 1996 |
| THE Pink Laundry Ltd | Other services | 2020 |
| THE WYN Jones Partnership Ltd | Real estate | 2010 |
| Think Rich Investments Limited | Information & communication | 2019 |
| Tiercel Developments Limited | Construction | 2003 |
| Tourism Wales Limited | Professional & scientific | 2004 |
| Towyn Development Co. Limited | Agriculture & fishing | 1960 |
| Triang Farms Limited | Agriculture & fishing | 2023 |
| Triang Leisure LLP | | 2023 |
| UK Airstream Events Ltd | Hospitality | 2019 |
| Ustrike Limited | Arts & recreation | 2007 |
| Video 77 Limited | Information & communication | 1992 |
| Vyrnwy Caravans Administration Limited | Financial services | 2009 |
| W & L Sales Limited | Wholesale & retail | 1995 |
| W J James & Co Limited | Professional & scientific | 2002 |
| W.B. and A.D. Morgan Ltd | Construction | 1994 |
| Waen Farms Limited | Agriculture & fishing | 2004 |
| Wellsite Limited | Information & communication | 1998 |
| Welsh Feed Producers Limited | Extraterritorial | 1998 |
| Welsh Venison Centre Limited | Wholesale & retail | 2003 |
| Welshpool & Llanfair Light Railway Preservation Co Limited | Transport & logistics | 1960 |
| Welshpool Jewellers Limited | Wholesale & retail | 2003 |