| Newtown Football Club Community and Education Foundation Ltd | Arts & recreation | 2024 |
| Newtown Martial Arts Centre Limited | Arts & recreation | 2011 |
| Newtown Metalising Limited | Manufacturing | 2019 |
| Newtown Nails Ltd | Other services | 2021 |
| Newtown Outdoor Festival Ltd | Education | 2023 |
| Newtown Plastics Limited | Manufacturing | 2000 |
| Newtown Rugby Football Club Ltd | Arts & recreation | 2018 |
| Newtown Tyres (Powys) Limited | Wholesale & retail | 2009 |
| Newtown VET Clinic Limited | Professional & scientific | 2024 |
| Nigel Pugh (Car Sales) Limited | Wholesale & retail | 2001 |
| NJ Creative Ltd | Professional & scientific | 2024 |
| NO 17 Events Ltd | Hospitality | 2017 |
| Norris Catering Industries Ltd | Hospitality | 2024 |
| NOT on the Corner Shop Ltd | Wholesale & retail | 2023 |
| NPS Property Investment Limited | Real estate | 2023 |
| NPS Retail Limited | Wholesale & retail | 2024 |
| Nu-Home Innovations Ltd | Wholesale & retail | 2020 |
| O.R.E. Limited | Arts & recreation | 2000 |
| Octagon Safety International Ltd | Professional & scientific | 2017 |
| Office Express (Newtown) Limited | Financial services | 1983 |
| Office Express (UK) Limited | Wholesale & retail | 2000 |
| Ohana Sports Limited | Arts & recreation | 2022 |
| OIL Boiler Servicing Ltd | Administrative & support | 2015 |
| Old Toll Nursery Ltd | Agriculture & fishing | 2018 |
| Olivers Discount Stores Ltd | Wholesale & retail | 2016 |
| Olivewood Property Group Limited | Financial services | 2026 |
| Olivewood Property Investments Ltd | Real estate | 2021 |
| Olivewood Property Services Ltd | Construction | 2026 |
| Olvera Properties Limited | Real estate | 2020 |
| Ongun Property Investment Ltd | Real estate | 2025 |
| Original Hideaways Limited | Construction | 2015 |
| OS2 Solutions Ltd | Administrative & support | 2008 |
| Ottwill Developments (2) Limited | Construction | 2004 |
| Owenscars.Co.Uk Limited | Wholesale & retail | 2026 |
| O’Gorman and Stanford Limited | Professional & scientific | 2019 |
| P & G (Aberhafesp) Management Company Ltd | Households | 2015 |
| P & J Trading Limited | Wholesale & retail | 2000 |
| P.E.Q Food Ltd | Wholesale & retail | 2024 |
| PAH Security Solutions Ltd | Administrative & support | 2015 |
| Pain Medicine Medicolegals Ltd | Health & social care | 2018 |
| Pantycrai Limited | Construction | 2025 |
| Parkers Cafe Ltd | Hospitality | 2013 |
| Parkers House B&B Ltd | Hospitality | 2018 |
| Patrick Tomlinson Associates Ltd | Professional & scientific | 2008 |
| Paunin & Co Limited | Manufacturing | 2016 |
| PAV Electrical Contractors Limited | Construction | 2022 |
| Pavilion Court 7-19 Limited | Real estate | 2011 |
| PDG International Security Solutions Ltd | Professional & scientific | 2024 |
| Peacock Manor Limited | Other services | 2024 |
| Peartree Bridge Homes Limited | Construction | 2003 |
| PEN Y Pentre Caravan Park Limited | Hospitality | 2017 |
| Penarth Wines Limited | Agriculture & fishing | 2010 |
| Pencwm Eggs Limited | Wholesale & retail | 2024 |
| Penoffa Holidays LLP | | 2020 |
| Pentrenant Poultry Limited | Agriculture & fishing | 2014 |
| Performance Improvement Limited | Health & social care | 1985 |
| Perspectives on Business Limited | Professional & scientific | 2019 |
| Pertheirin Eggs Limited | Agriculture & fishing | 2021 |
| PFU Ltd | Real estate | 2024 |
| PG Insured Limited | Professional & scientific | 2026 |
| Philbert International Tools Limited | Wholesale & retail | 1982 |
| Philip Jones Builders Limited | Construction | 2020 |
| Phoenix Community Furniture Scheme Limited | Health & social care | 2000 |
| Pips Plant Hire Limited | Construction | 2011 |
| Pixelated Crumpet Limited | Information & communication | 2024 |
| Plan and Create Ltd | Administrative & support | 2025 |
| Plas Ella Properties Limited | Real estate | 2004 |
| Plas Newydd Bunkhouse LLP | | 2009 |
| Play and Stay Penygloddfa After School Club C.I.C. | Health & social care | 2025 |
| Point Meridian Group Ltd | Administrative & support | 2024 |
| Polish Shop Powys Limited | Wholesale & retail | 2025 |
| Polymould Ltd | Manufacturing | 2018 |
| Polypot Creels Limited | Manufacturing | 2005 |
| Popcorn Kitchen Limited | Manufacturing | 2016 |
| Portmeirion Properties Limited | Professional & scientific | 1974 |
| Positive Mountain Days Ltd | Other services | 2024 |
| Positive Tours Wales Ltd | Administrative & support | 2025 |
| Powys Builds Limited | Construction | 2021 |
| Powys Doctors Cwmni Buddiant Cymunedol | Health & social care | 2025 |
| Precision-Engineer Ltd | Manufacturing | 1997 |
| Progression Training Limited | Administrative & support | 2003 |
| Prymec Limited | Professional & scientific | 2020 |
| Pugilist Promotions Limited | Wholesale & retail | 2025 |
| Puzzle Plumbers Ltd | Construction | 2016 |
| PVM Property Holdings Ltd | Real estate | 2021 |
| PVS Express Ltd | Wholesale & retail | 2018 |
| Q.P.S. Investments Limited | Financial services | 2013 |
| Quartix Limited | Manufacturing | 2001 |
| Quick Reach UK Ltd | Information & communication | 2026 |
| R & L Edwards Limited | Real estate | 2025 |
| R Groves (TAF) Ltd | Professional & scientific | 2022 |
| R H Maritime Solutions Limited | Administrative & support | 2012 |
| R.J.E Building & Refurbishments Ltd. | Construction | 2017 |
| Rachel Wierzbinski Limited | Professional & scientific | 2025 |
| Range Rover Register Limited | Other services | 1987 |
| Rapidsecureprouk Ltd | Administrative & support | 2016 |
| RAY Bloor Haulage Limited | Transport & logistics | 2007 |
| Ray's Wood Works Ltd | Manufacturing | 1998 |
| Razem-Together CIC | Education | 2026 |
| Rdcp Electrical 1 Ltd | Financial services | 2024 |