| PC Railway Solutions Ltd | Manufacturing | 2019 |
| PC Security Services Limited | Administrative & support | 2015 |
| PC Stevens Limited | Transport & logistics | 2010 |
| PCA Gift Company Ltd | Wholesale & retail | 2022 |
| Pcad Properties Limited | Real estate | 2011 |
| Pcard Ltd | Information & communication | 2025 |
| PCB Rental Limited | Real estate | 2019 |
| PCE Windows Ltd | Construction | 2011 |
| PCF Putting Communities First CIC | Public administration | 2025 |
| PCF Training & Consultancy Solutions Ltd | Public administration | 2022 |
| Pchne Limited | Wholesale & retail | 2018 |
| PCI Penn UK Holdco Limited | Manufacturing | 2014 |
| Pcig Limited | Transport & logistics | 2024 |
| Pcnre Ltd | Wholesale & retail | 2025 |
| PCP Cabling Limited | Construction | 2018 |
| PCP Developments Limited | Real estate | 2019 |
| PCP Developments NO.2 Limited | Real estate | 2023 |
| Pcrconnect Ltd | Transport & logistics | 2019 |
| Pcrgn Limited | Health & social care | 2021 |
| PCS Consultancy Services Limited | Professional & scientific | 2015 |
| PCS ES Ltd | Households | 2018 |
| PCS3 Limited | Information & communication | 2024 |
| Pcubed Management Solutions Ltd | Information & communication | 2015 |
| Pcwrxq Mart Ltd | Wholesale & retail | 2025 |
| PD Care Limited | Health & social care | 2011 |
| PD Developments Ltd | Construction | 2018 |
| PD Gwalia Limited | Real estate | 2005 |
| PD Orient Ltd | Health & social care | 2022 |
| PD9 Investments Limited | Real estate | 2020 |
| PDM Property Holdings Limited | Real estate | 2000 |
| PDP Financials Ltd | Administrative & support | 2009 |
| PDQ Couriers UK Ltd | Transport & logistics | 1997 |
| PDR Enterprise Ltd | Real estate | 2020 |
| Pdrm Motor Sales Ltd | Wholesale & retail | 2025 |
| PDS Bulk Liquids Limited | Transport & logistics | 2013 |
| PE Direct Ltd | Education | 2016 |
| PE Property Management Ltd | Real estate | 2019 |
| Peace of Mind Windows Ltd | Construction | 2013 |
| Peace Property Doctors Ltd | Real estate | 2021 |
| Peace Ventures Ltd | Professional & scientific | 2024 |
| Peaceco Limited | Wholesale & retail | 2025 |
| Peach Blossom Swshi Ltd | Hospitality | 2024 |
| Peach Developments Ltd | Real estate | 2021 |
| Peach Sky Bay Ltd | Information & communication | 2014 |
| Peach Source Clothing Ltd | Wholesale & retail | 2024 |
| Peach Tree and Landscape Ltd | Administrative & support | 2016 |
| Peachey Rail Ltd | Construction | 2018 |
| Peacocks 22 Limited | Wholesale & retail | 2025 |
| Peahen Properties Ltd | Real estate | 2022 |
| Peak Carpentry and Building Ltd | Construction | 2022 |
| Peak Field Saas Ltd | Information & communication | 2025 |
| Peak Finex Ltd | Wholesale & retail | 2019 |
| Peak Forge Construction Limited | Construction | 2025 |
| Peak Performance (South Wales) Limited | Extraterritorial | 2003 |
| Peak Performance Head Office Services Limited | Professional & scientific | 2014 |
| Peak Performance Partners Ltd | Financial services | 2023 |
| Peak Photography Ltd | Professional & scientific | 2019 |
| Peak Physique (Cardiff) Limited | Arts & recreation | 2012 |
| Peak Property Management Group Limited | Real estate | 2024 |
| Peak Scaffold & Access Ltd | Construction | 2024 |
| Peaks to Coastal Ltd | Hospitality | 2024 |
| Peaky Play Ltd | Information & communication | 2026 |
| Peanut Holdings Ltd | Administrative & support | 2022 |
| Peanuts Online Limited | Wholesale & retail | 2021 |
| Pear Tree Contractors Ltd | Wholesale & retail | 2020 |
| Pear Tree Ventures Limited | Real estate | 2007 |
| Pearce Precision Limited | Manufacturing | 2014 |
| Pearde Design Limited | Wholesale & retail | 2021 |
| Peardstone Property Limited | Real estate | 2025 |
| Pearl Convenience Ltd | Wholesale & retail | 2019 |
| Pearl Court Residents Management Company Limited | Real estate | 2010 |
| Pearl Global Commerce Ltd | Wholesale & retail | 2025 |
| Pearl Heritage Properties Limited | Real estate | 2022 |
| Pearl of the Orient Seas Ltd | Wholesale & retail | 2016 |
| Pearl Site Services Limited | Construction | 2015 |
| Pearl Street Management Ltd | Hospitality | 2018 |
| Pearlgate Associates Limited | Other services | 2019 |
| Pearls Private Hire Limited | Transport & logistics | 2018 |
| Pearltailor Property Management Limited | Households | 2001 |
| Pearn Family Investment Company | Other services | 2025 |
| Pearns Properties Limited | Real estate | 2000 |
| Pearson Facilities & Cleaning Ltd | Administrative & support | 2025 |
| Pearson Tiffany Louise Ltd | Wholesale & retail | 2026 |
| Pearsons & Associates Ltd | Professional & scientific | 2017 |
| Pearsons Piers Ltd | Construction | 2018 |
| Peartree Languages Limited | Professional & scientific | 2026 |
| Peas Prepared Limited | Wholesale & retail | 2014 |
| Pebble Beach Enforcement Services Ltd | Administrative & support | 2019 |
| Pebbles Property Group Ltd | Real estate | 2025 |
| Pecastudio Ltd | Professional & scientific | 2022 |
| Pecio Car Servicing Ltd | Wholesale & retail | 2023 |
| Peculium Design Ltd | Professional & scientific | 2007 |
| Pedagolink Limited | Administrative & support | 2025 |
| Pedal Global Holdings Limited | Information & communication | 2018 |
| Pedr James Editing Ltd | Information & communication | 2014 |
| Pedra Bonita Limited | Other services | 2022 |
| PEE GEE Motorcycles Ltd | Wholesale & retail | 2024 |
| Peek a BOO Baby Ltd | Health & social care | 2011 |
| Peeky Ltd | Administrative & support | 2017 |
| Peel Media Living NO.1 Limited | Real estate | 2025 |