| Pentre Plant Limited | Administrative & support | 2017 |
| Peony and Lotus Ltd | Wholesale & retail | 2023 |
| Peter J Knight Ltd | Extraterritorial | 2015 |
| Peter O'Neill (Services) Limited | Construction | 1990 |
| Peter Villars Sportsground Maintenance Limited | Administrative & support | 2023 |
| Phab Newport Ltd | Wholesale & retail | 2024 |
| Philips Property Investments Ltd | Real estate | 2023 |
| Phoenix Network CIC | Education | 2026 |
| Phoenix Wellness Collective Ltd | Other services | 2026 |
| Phone Techno Ltd | Wholesale & retail | 2022 |
| Picklebits Ltd | Manufacturing | 2025 |
| Pina Foods Ltd | Hospitality | 2020 |
| Pizza Dough Limited | Hospitality | 2019 |
| Pizza Parlour Cwmbran Limited | Hospitality | 2023 |
| Pizzadough Cwmbran Ltd | Hospitality | 2023 |
| PK Race Engineering Ltd | Manufacturing | 2024 |
| Plan-It Couriers Ltd | Transport & logistics | 2012 |
| Plan-It Motor Company Ltd | Wholesale & retail | 2025 |
| Plan-It Properties Ltd | Real estate | 2020 |
| Platinum Bookkeeping Services Ltd | Extraterritorial | 2012 |
| PM Autos Cwmbran Ltd | Wholesale & retail | 2023 |
| PM Wise Ltd | Professional & scientific | 2017 |
| Polarity Wellbeing Ltd | Wholesale & retail | 2023 |
| Pont Kemys Caravan Park Limited | Administrative & support | 2010 |
| Pontnewydd Child Care Ltd | Education | 2015 |
| Pontnewydd Fish Bar Ltd | Hospitality | 2026 |
| Pontnewydd Ltd | Other services | 2019 |
| Porter Engineering Ltd. | Professional & scientific | 2011 |
| Positive Women South West CIC | Health & social care | 2025 |
| Poulton Professional Driving Services Ltd | Transport & logistics | 2022 |
| Powell Wealth Management Limited | Financial services | 2019 |
| Power Synergy Limited | Energy | 2025 |
| PQE Limited | Extraterritorial | 2016 |
| PR Communications Limited | Other services | 2005 |
| PR Recruitment Services Limited | Other services | 2005 |
| PR Valeting Services Limited | Other services | 2005 |
| Pracora Ltd | Information & communication | 2026 |
| Precision Point Aesthetics Ltd | Other services | 2022 |
| Premier Circuits (Wales) Ltd | Construction | 2005 |
| Premiumstar Limited | Administrative & support | 2004 |
| Presh Health Ltd | Education | 2024 |
| Prestige Joinery Products Ltd | Construction | 2011 |
| Prestige Vacation Rentals Ltd | Real estate | 2024 |
| PRF Support Limited | Transport & logistics | 2017 |
| Price Farms Limited | Agriculture & fishing | 2007 |
| Pride Embroidery Ltd | Wholesale & retail | 2024 |
| Prime Homes Solutions Limited | Construction | 2025 |
| Primrose Collections Limited | Information & communication | 2001 |
| Pritchard Property Services Ltd | Real estate | 2020 |
| Pro Clean Windows & Guttering Ltd | Administrative & support | 2024 |
| Pro-Test Engineering Ltd | Professional & scientific | 2024 |
| Proactive Management Solutions Limited | Professional & scientific | 2002 |
| Professional-Developments-Uk Ltd | Extraterritorial | 2024 |
| Promocorp Limited | Manufacturing | 2000 |
| Promotion Massage Therapy Ltd | Arts & recreation | 2025 |
| Property Hotspot Group Ltd | Real estate | 2024 |
| Prosper Waste Management Ltd | Water & waste | 2003 |
| Prototime Ltd | Information & communication | 2024 |
| PST Consultancy Ltd | Construction | 2026 |
| PSV Engineering Limited | Wholesale & retail | 2015 |
| Pure Recruitment Ltd | Administrative & support | 2025 |
| Pure Sealants Ltd | Construction | 2026 |
| Purely Pawfect Pet Services Ltd | Other services | 2026 |
| Pyramid Hygiene Ltd | Manufacturing | 1999 |
| Pyrsafe Compliance Ltd | Professional & scientific | 2025 |
| Qaiplus Ltd | Information & communication | 2026 |
| QD Technological Commerce Agency | Professional & scientific | 2020 |
| Quadrant 4 Ltd | Education | 2014 |
| Quandek Ltd | Manufacturing | 2012 |
| Quandek Maintenance Ltd | Manufacturing | 2024 |
| Quantum Morgan Ltd | Construction | 2024 |
| R & R Retail Limited | Wholesale & retail | 2003 |
| R C Green Contractors Limited | Construction | 1996 |
| R H Magor Carpentry & Joinery Contractors Limited | Construction | 2006 |
| R J Crean Ltd | Health & social care | 2020 |
| R J Howard Bespoke Camper Conversions Ltd | Manufacturing | 2022 |
| R Senior & SON Limited | Construction | 2004 |
| R&C Services Ltd | Construction | 2022 |
| R&D Baker Roofing Limited | Construction | 2022 |
| R&S Asseterest Ltd | Real estate | 2026 |
| R&S Recruitment Services Ltd | Administrative & support | 2024 |
| R.H.L. Activities Limited | Arts & recreation | 2002 |
| R.J.S. Recovery Limited | Wholesale & retail | 2015 |
| R.M. Hockey & SON Limited | Professional & scientific | 1998 |
| Racelinecoaching Ltd | Arts & recreation | 2021 |
| RAM Castle Ltd | Hospitality | 2024 |
| Rapid Response Systems Limited | Health & social care | 2016 |
| RAS Tiffin Ltd | Hospitality | 2026 |
| RAW Feeding Cwmbran Ltd | Wholesale & retail | 2019 |
| RAW Feeding Storage & Distribution Ltd | Wholesale & retail | 2019 |
| Rawt Investments Limited | Financial services | 2019 |
| RBM Management Limited | Real estate | 2010 |
| RC Humphries Holdings Limited | Financial services | 2023 |
| Readers Commercial Kitchens Ltd | Manufacturing | 2017 |
| Readers Steel Services Limited | Manufacturing | 2022 |
| Recruitment Solutions Workforce Limited | Administrative & support | 2018 |
| Red Beetle Films Ltd | Information & communication | 2012 |
| Red Chilli Cwmbran Ltd | Hospitality | 2023 |
| Red Dragon Healthcare Ltd | Administrative & support | 2010 |
| Red Honey Ltd | Professional & scientific | 2024 |