| PFS Properties (Pembrokeshire) Limited | Other services | 2002 |
| PH2 Software Ltd | Information & communication | 2023 |
| Pheti Ltd | Administrative & support | 2025 |
| Phil Lewis ENG. DEV. Ltd | Administrative & support | 2007 |
| Phil Morris Plastering Limited | Construction | 2002 |
| Phillips Green Limited | Professional & scientific | 2003 |
| Philpin Agriculture Limited | Real estate | 2009 |
| Phoenix - Creative Force Ltd. | Extraterritorial | 2025 |
| Phoenix Groundworks & Construction Limited | Construction | 2017 |
| Phonic Property Developments Ltd | Real estate | 2025 |
| Picton Home Farm Barns Ltd | Construction | 2014 |
| Picton Kebab Ltd | Hospitality | 2026 |
| Piggy Finance Limited | Financial services | 2012 |
| Pinopolis Ltd | Arts & recreation | 2010 |
| Pintfinder UK Ltd | Information & communication | 2025 |
| Piod Project Management Limited | Professional & scientific | 2024 |
| Piping Hot Plumbing Pembrokeshire Ltd | Construction | 2015 |
| Pirgar Ltd | Administrative & support | 2022 |
| Pirkini Ltd | Extraterritorial | 2023 |
| PJL Design Group Ltd | Professional & scientific | 2026 |
| PJW Corporate Property Consulting Ltd | Professional & scientific | 2013 |
| Planet CIC Community Interest Company | Other services | 2017 |
| Plas Gwasg CIC | Information & communication | 2020 |
| Players Olymp Limited | Information & communication | 2018 |
| Plumstone Consulting Limited | Information & communication | 2021 |
| Plumstone Trading Limited | Manufacturing | 2016 |
| Pluruger Trading Ltd | Wholesale & retail | 2023 |
| PM Style Property Management Limited | Real estate | 2010 |
| PMR Direct Ltd | Administrative & support | 2007 |
| PNW Architectural Services Limited | Professional & scientific | 2015 |
| Point Farm Dale Limited | Hospitality | 2015 |
| Poled Ltd | Other services | 2021 |
| Pols Contracting Ltd | Other services | 2023 |
| Polypembs Ltd | Other services | 2012 |
| Poosam Ltd | Other services | 2021 |
| Popular Move (UK) Ltd | Real estate | 2014 |
| Porthclais Harbour Authority Limited | Transport & logistics | 2010 |
| Porthgain Distillery Ltd | Manufacturing | 2021 |
| Porthstinian Boat Owners C.I.C. | Administrative & support | 2016 |
| Potential to Succeed CIC | Public administration | 2020 |
| Powells Commercial Maintenance Ltd | Professional & scientific | 2023 |
| Premium Aviation Ltd | Other services | 2018 |
| Prepima Invest Limited | Professional & scientific | 1990 |
| Preseli Engineering Ltd | Professional & scientific | 2026 |
| Preseli Glamping Ltd | Hospitality | 2018 |
| Preseli Group Ltd | Financial services | 2020 |
| Preseli Lettings Ltd | Real estate | 2015 |
| Preseli Maintenance Limited | Other services | 2021 |
| Preseli Venture Ltd | Arts & recreation | 2019 |
| Presentias Limited | Agriculture & fishing | 2003 |
| Prestige Concrete Products Limited | Administrative & support | 2019 |
| Price & SON Limited | Professional & scientific | 2005 |
| Prija Services Ltd | Other services | 2024 |
| Priory Haven Estates Ltd | Real estate | 2025 |
| Private Dyslexia Services UK Ltd | Education | 2024 |
| Prleatham Construction Limited | Professional & scientific | 2021 |
| PRO360 Group Ltd | Other services | 2020 |
| Procurement & Carbon Solutions Ltd | Administrative & support | 2024 |
| Prop Art Hire Ltd | Administrative & support | 2011 |
| Propdog Limited | Manufacturing | 2011 |
| Propellers Cafe Limited | Hospitality | 2010 |
| Property, Environmental, Maintenance and Building Services Limited | Water & waste | 2008 |
| Property-Let-Management Ltd | Real estate | 2026 |
| Prosperitas in Mundo Ltd | Administrative & support | 2025 |
| Puffin Farms Holdings Limited | Financial services | 2022 |
| Puffin Farms Limited | Agriculture & fishing | 2022 |
| Puffin Patch Holidays Ltd. | Hospitality | 2024 |
| Puffin Quilts Ltd | Wholesale & retail | 2024 |
| Pure Learn Limited | Extraterritorial | 2008 |
| Pure West Media Limited | Professional & scientific | 2024 |
| Pure West Radio Limited | Information & communication | 2018 |
| Pure West Resources Limited | Information & communication | 2024 |
| PUREVISION360 Ltd | Extraterritorial | 2024 |
| Purisity Limited | Manufacturing | 2015 |
| Purple Plug Ltd | Construction | 2026 |
| PV33 Ltd | Wholesale & retail | 2021 |
| Pwmb Ltd | Hospitality | 2024 |
| Pwrbowl Limited | Arts & recreation | 2025 |
| Pwynt CIC | Information & communication | 2025 |
| Pykd Ltd | Wholesale & retail | 2022 |
| Pysgod Y MOR Ltd | Agriculture & fishing | 2020 |
| Pztqs Ltd | Administrative & support | 2022 |
| QCI (Calvary Church Contracting) Limited | Construction | 2012 |
| Qiama Ltd | Wholesale & retail | 2024 |
| Quadrasol Limited | Real estate | 2025 |
| Quality of Live Ltd | Administrative & support | 2025 |
| Quantum Elevate Ltd | Extraterritorial | 2024 |
| Quantumvibe Ltd | Other services | 2024 |
| Quattro Lodge Group Limited | Wholesale & retail | 2025 |
| Quattro Lodge Limited | Agriculture & fishing | 2017 |
| Quhuis Ltd | Wholesale & retail | 2024 |
| Quiss Holding PC | | 2021 |
| Qunlin Trading Ltd | Wholesale & retail | 2021 |
| R & F S Limited | Hospitality | 2005 |
| R & L Interiors (Commercial) Limited | Construction | 2011 |
| R D Plant Hire Pembrokeshire Limited | Construction | 2022 |
| R J Agricultural Ltd | Wholesale & retail | 2026 |
| R L S Property Management Ltd | Real estate | 2019 |
| R L S Technology Ltd | Information & communication | 2020 |
| R M Labels Limited | Manufacturing | 1988 |