| Pearce Elite Construction Limited | Construction | 2020 |
| Pearce Elite Plumbing & Heating Limited | Construction | 2008 |
| Pearly White Smiles Limited | Health & social care | 2012 |
| Pebbles Purrrfect Paws Ltd | Other services | 2025 |
| Pedal Electric Vehicles Limited | Construction | 2022 |
| PEF Production Ltd | Information & communication | 2022 |
| Pegasus Property Management SW Ltd | Households | 2025 |
| Pegasus TAP Room Limited | Wholesale & retail | 2018 |
| Pen-Y-Bont Gymnastics Ltd | Arts & recreation | 2010 |
| Pen-Y-Bont Health Limited | Health & social care | 2015 |
| Pencoed Athletic Boys and Girls Club Limited | Extraterritorial | 2019 |
| Pencoed Dental Ltd | Health & social care | 2010 |
| Pencoed RFC Limited | Arts & recreation | 2022 |
| Pencoed Travel Limited | Transport & logistics | 1997 |
| Pendant Support Limited | Administrative & support | 2022 |
| Pendragon Furniture Limited | Water & waste | 1998 |
| Pendre UK Limited | Wholesale & retail | 2013 |
| Pentbeck Limited | Extraterritorial | 2026 |
| Pentcray Limited | Wholesale & retail | 2021 |
| Pentrebach Limited | Real estate | 2001 |
| Pentshaw Limited | Extraterritorial | 2026 |
| Peny Trans Ltd | Transport & logistics | 2020 |
| Penybont Community Football Club Limited | Education | 2024 |
| Penybont Glass Company Limited | Wholesale & retail | 1950 |
| Penybont Monumental Masons Limited | Other services | 2004 |
| Penybont Spice Ltd | Hospitality | 2019 |
| Pepper Robotics Ltd | Information & communication | 2022 |
| Pepperazzi Limited | Extraterritorial | 2025 |
| Perdez PAS CYF | Extraterritorial | 2014 |
| Perfectadent Ltd | Wholesale & retail | 2007 |
| Performance Focus Ltd | Arts & recreation | 2014 |
| Perkins Legal Limited | Professional & scientific | 2016 |
| Perllan Properties Limited | Real estate | 2022 |
| Perormo Ltd | Wholesale & retail | 2022 |
| Perpetual Lettings Limited | Real estate | 2024 |
| Pet Transporters Ltd | Transport & logistics | 2024 |
| Peter Wood & Sons Butchers Limited | Wholesale & retail | 2005 |
| Peyton Executive Limited | Other services | 1999 |
| Peyton Travel Limited | Transport & logistics | 2004 |
| PF Chicken Ltd | Hospitality | 2026 |
| Pharmaflow Ltd | Professional & scientific | 2017 |
| PHASE4OUR Limited | Construction | 2018 |
| Pheasant Acre Plants Ltd | Agriculture & fishing | 2024 |
| Phelps Property Solutions Ltd | Real estate | 2021 |
| Phil-A-Cup Limited | Wholesale & retail | 2005 |
| Phillip Jenkins Limited | Professional & scientific | 1994 |
| Phillips Engineering (Wales) Limited | Manufacturing | 2003 |
| Phoenix Accident Repair Centre Bridgend Ltd | Wholesale & retail | 2026 |
| Phoenix Nutrition Limited | Wholesale & retail | 2013 |
| Phonelink Installations Limited | Information & communication | 1997 |
| Photronics (UK) Limited | Manufacturing | 1995 |
| Physique Health Fitness & Leisure Limited | Other services | 2011 |
| Pick Pack Direct Limited | Information & communication | 2019 |
| Picton Stone Ltd | Manufacturing | 2016 |
| Piemags Ltd | Other services | 2019 |
| Pigture Perfect Farm Limited | Agriculture & fishing | 2024 |
| Pillar Post Limited | Construction | 2017 |
| Pimento Deli Limited | Hospitality | 2020 |
| Pin-It Pastry Limited | Manufacturing | 2008 |
| Pink Dandelion Business Services Ltd | Administrative & support | 2025 |
| Pink Dandelion Networking Ltd | Administrative & support | 2025 |
| Pinnacle Access Services Ltd | Construction | 2003 |
| Pinpoint Data Ltd | Information & communication | 2024 |
| Piranavan Anoja Ltd | Wholesale & retail | 2025 |
| Pisgah Retail Ltd | Wholesale & retail | 2023 |
| Pitch & Play Limited | Information & communication | 2024 |
| Pixel & Print Ltd | Information & communication | 2007 |
| Pizza Point (Ponty) Ltd | Hospitality | 2019 |
| PJ Delivery Ltd | Hospitality | 2019 |
| PJ International Construction Solutions Ltd | Professional & scientific | 2024 |
| PJ Owen Furniture Agencies Limited | Wholesale & retail | 2004 |
| PJL Architect Limited | Professional & scientific | 2004 |
| PL Photography Limited | Professional & scientific | 2017 |
| Place Digital Ltd | Professional & scientific | 2019 |
| Plainscoop Limited | Arts & recreation | 2002 |
| Planbeck Limited | Extraterritorial | 2025 |
| Planet Chicken Limited | Hospitality | 2024 |
| Planr Ltd | Professional & scientific | 2011 |
| Plansure Building Products Limited | Manufacturing | 2006 |
| Plas Hyfryd Developments Ltd | Construction | 2020 |
| Plas-Penycae Property Management Ltd | Real estate | 2026 |
| Plastic Surgery (Wales) Limited | Health & social care | 2010 |
| Platinum People Ltd | Wholesale & retail | 2011 |
| Plenn Group Ltd | Information & communication | 2026 |
| Plough Monknash Ltd | Hospitality | 2020 |
| PMJ Solutions Limited | Professional & scientific | 2024 |
| PMP Printing Ltd | Manufacturing | 2021 |
| Poco-A-Poco Limited | Hospitality | 2009 |
| Pokhara Café Ltd | Hospitality | 2026 |
| Pokhara Manor Ltd | Hospitality | 2025 |
| Ponte Vecchio Limited | Hospitality | 2023 |
| Pontycymer Bowling Club Ltd | Education | 2019 |
| Pontycymer Rugby and Community Sports Ltd | Education | 2020 |
| Poole's Properties Limited | Real estate | 2019 |
| Popham (Holdings) Limited | Real estate | 1997 |
| Popworld Ltd | Wholesale & retail | 2024 |
| Porsland Ltd. | Construction | 2019 |
| Port Talbot Harbour Boat Services Limited | Transport & logistics | 2015 |
| Porters Limited | Real estate | 2003 |
| Porthcawl Distillery Limited | Manufacturing | 2022 |