| Pawfect Foods Ltd | Manufacturing | 2018 |
| Pawsitive Solutions Ltd | Professional & scientific | 2025 |
| Paxari Solutions Ltd | Financial services | 2025 |
| PAY2DAY Holdings Ltd | Financial services | 2023 |
| PAY2DAY Ltd | Financial services | 2020 |
| PAY4WORK Limited | Information & communication | 2023 |
| Payal Limited | Health & social care | 2024 |
| Payal Malhotra (Menswear) Ltd | Wholesale & retail | 2019 |
| Payal Malhotra Ltd | Wholesale & retail | 2016 |
| Paybackly Ltd | Information & communication | 2026 |
| Payments Solutions Limited | Other services | 2025 |
| Payne Chelsea Surgery Limited | Health & social care | 2011 |
| Payngo Mart Ltd | Wholesale & retail | 2025 |
| Paywastoon Money Transfer Ltd | Professional & scientific | 2014 |
| Paywire Ltd | Financial services | 2022 |
| PB Char Limited | Financial services | 2019 |
| PB Family Limited | Financial services | 2019 |
| PB Projects Holdings Limited | Financial services | 2018 |
| PB Projects Management Services Limited | Administrative & support | 2003 |
| PB02 Limited | Transport & logistics | 2024 |
| Pbat Services Ltd | Wholesale & retail | 2025 |
| PBJ9 Limited | Health & social care | 2014 |
| PC London Ltd | Arts & recreation | 2009 |
| PC Taverns Ltd | Hospitality | 2025 |
| PC Tech International Limited | Manufacturing | 1992 |
| Pcal Limited | Real estate | 2015 |
| PCD Commercial Management Ltd | Professional & scientific | 2017 |
| PCL RP Ltd | Real estate | 2022 |
| PCM Accounting Limited | Professional & scientific | 2018 |
| PCM Construction Limited | Construction | 2004 |
| PCN Electrical Ltd | Construction | 2018 |
| Pcnow Ltd | Information & communication | 2020 |
| PCO Go Limited | Education | 2022 |
| PCO Rent to Buy Limited | Administrative & support | 2024 |
| PCP Management Partners Limited | Professional & scientific | 2018 |
| PDL Haulage Limited | Transport & logistics | 2024 |
| PDM Investment Limited | Real estate | 2020 |
| PDM1 Ltd | Construction | 2025 |
| PDP Law Limited | Professional & scientific | 2020 |
| PDQ Express Couriers Limited | Transport & logistics | 1989 |
| PDR Investments Ltd | Real estate | 2012 |
| PDS Consultancy Services Limited | Professional & scientific | 2002 |
| Pdsk Agro Ltd | Wholesale & retail | 2022 |
| PE Agents Ltd | Real estate | 2024 |
| PEA Creatives Ltd | Information & communication | 2024 |
| PEA Holding Limited | Real estate | 2022 |
| Peace Advantage Ltd | Professional & scientific | 2018 |
| Peace NOT WAR Ltd | Arts & recreation | 2023 |
| Peaceform Limited | Health & social care | 1997 |
| Peachfields Limited | Real estate | 2013 |
| Peachy Homes Limited | Real estate | 2015 |
| Peacock Land Ltd | Financial services | 2021 |
| Peacock Personal Holdings Ltd | Financial services | 2021 |
| Peacock Properties Ltd | Real estate | 2021 |
| Peacocks Investment Limited | Financial services | 2025 |
| Peak & Seek Realty Ltd | Real estate | 2024 |
| Peak Broadway Limited | Wholesale & retail | 2015 |
| Peak Performance Development Ltd | Education | 2014 |
| Peak Personal Finance Ltd | Financial services | 2023 |
| Peak Structures Limited | Construction | 2025 |
| Peak-X Media Limited | Professional & scientific | 2016 |
| Peake Property Ltd | Real estate | 2017 |
| Peaksons Properties Ltd | Real estate | 2011 |
| Peap Holdings Limited | Real estate | 2017 |
| Pearce House Capital Limited | Real estate | 2018 |
| Pearl Club Ltd | Wholesale & retail | 2023 |
| Pearl Consultancy Limited | Professional & scientific | 2006 |
| Pearl Corporate Ltd | Administrative & support | 2023 |
| Pearl Fire Services Ltd | Construction | 2016 |
| Pearl House Management (Manchester) Limited | Real estate | 2008 |
| Pearlmaline Ltd | Real estate | 2022 |
| Pearls Consulting Ltd | Administrative & support | 2016 |
| Pearson Kaye Properties Limited | Real estate | 2005 |
| Pearsons Surveying Limited | Professional & scientific | 2013 |
| Pebbles Parties Ltd | Arts & recreation | 2026 |
| Peckleton Homes Limited | Administrative & support | 1998 |
| Pedleo Investment Ltd | Real estate | 2015 |
| Pedro House Ltd | Other services | 2013 |
| Peebees Professional Service Ltd | Professional & scientific | 2023 |
| Peech Consulting Limited | Information & communication | 2019 |
| Peekaboo Studio Ltd | Information & communication | 2022 |
| Peel Homes Limited | Real estate | 2023 |
| Peepal Tree Support Services Limited | Health & social care | 2014 |
| Peer Roberts Limited | Professional & scientific | 2008 |
| Peerglove Ltd | Health & social care | 2007 |
| Pegasus Boats Limited | Professional & scientific | 2004 |
| Pegasus Legal Services Limited | Professional & scientific | 2025 |
| Pegasus Prestige Limited | Transport & logistics | 2013 |
| Pegasus Trust Solutions Ltd | Real estate | 2023 |
| Peggy Maud Productions Ltd | Information & communication | 2024 |
| Peket Coproduction Limited | Professional & scientific | 2014 |
| Peket Productions 2 Limited | Other services | 2016 |
| Pelican Group Limited | Professional & scientific | 2000 |
| Pelicans Limited | Professional & scientific | 1983 |
| Pelicans Manufacturing Co. Ltd | Manufacturing | 1981 |
| Pelly Medical Practice Ltd | Administrative & support | 2013 |
| Pelly Road Investments Limited | Real estate | 2025 |
| Pembroke Grange (Caversham) Management Company Limited | Households | 2004 |
| Pemienterprize Ltd | Wholesale & retail | 2017 |
| Penair Lodge (Harrow) Management Company Limited | Households | 1966 |