| Park.Com Limited | Professional & scientific | 1979 |
| Parkland Estates Limited | Administrative & support | 2003 |
| Parr Electrical (Liverpool) Limited | Wholesale & retail | 1998 |
| Partell Retail Limited | Wholesale & retail | 2002 |
| Partnership for Learning | Administrative & support | 1999 |
| Paton Glass Limited | Construction | 2004 |
| Patrick Medical Services Limited | Health & social care | 2020 |
| Paul Carney Builders Limited | Construction | 2002 |
| Paul Ennis & Company Limited | Construction | 2006 |
| Paul Ennis Construction Limited | Construction | 2006 |
| Paul Nuttall Electrical Contractors Ltd | Construction | 2004 |
| PC2 Limited | Administrative & support | 2014 |
| Pcparts 24/7 Ltd | Wholesale & retail | 2025 |
| PDV Design Limited | Professional & scientific | 1999 |
| Peacehaven House | Health & social care | 1997 |
| Pearl Logistics Limited | | 2006 |
| Pearsons Glass Limited | Manufacturing | 1977 |
| Peecee Print Limited | Manufacturing | 2003 |
| Peelclose Properties Limited | Real estate | 1971 |
| Peelcrag Properties Limited | Real estate | 1997 |
| Pemberton & Co. (Wallasey) Limited | Real estate | 1963 |
| Peninsula Plastering Ltd | Construction | 2020 |
| Pennyform Limited | Manufacturing | 1986 |
| Peter Eaton Limited | Construction | 2003 |
| Peter MC Limited | Administrative & support | 2003 |
| Petrea Mews Number Two (Management) Limited | Real estate | 2003 |
| Pharos Ventures | Financial services | 2019 |
| Phoenix Care 2 Limited | Education | 2005 |
| Phoenix Locomotives Limited | Manufacturing | 2004 |
| Pilkington Reinforcements Limited | Professional & scientific | 1985 |
| Pinder Medical Services Limited | Health & social care | 2006 |
| PLA Soft Drinks Limited | Wholesale & retail | 2002 |
| Plastok (Meshes & Filtration) Limited | Manufacturing | 1975 |
| Plastok Associates Limited | Manufacturing | 1978 |
| Playmats U.K. Limited | Arts & recreation | 2001 |
| PMG Property Limited | Real estate | 2019 |
| Poplar Services (Printers) Limited | Manufacturing | 1998 |
| Portfolio Business Supplies Limited | Wholesale & retail | 1992 |
| Potensial Limited | Health & social care | 2006 |
| Potok Limited | Energy | 2000 |
| Poulton Ceilings Limited | Real estate | 1981 |
| Prasur Investments Limited | Health & social care | 2005 |
| Precise Position Limited | Administrative & support | 2001 |
| Prelude School of Motoring (Car Hire) Limited | Education | 1997 |
| Premiership Paints Limited | Wholesale & retail | 2000 |
| Premium Furniture JS Ltd | Wholesale & retail | 2024 |
| Prescot House Limited | Real estate | 1983 |
| Prescotts (Architectural Ironmongers) Limited | Construction | 2000 |
| Prescotts Signs and Design Limited | Manufacturing | 2007 |
| Prestige Nationwide Fencing Ltd | Construction | 2026 |
| Prestige Steel Fabrication & Site Services Ltd | Manufacturing | 2007 |
| Preston Court Management Company(Southport)Limited | Households | 1965 |
| Price Courier Services Limited | Transport & logistics | 2025 |
| Primarycaredoc Limited | Health & social care | 2015 |
| Prime Vendors Ltd | Wholesale & retail | 2023 |
| Printer Specialists Ltd | Extraterritorial | 2003 |
| Priory Property Services (Staffs) Limited | Real estate | 2001 |
| Product Development Limited | Manufacturing | 1999 |
| Promega Holdings Limited | Construction | 1999 |
| Proper United Ltd | Information & communication | 2020 |
| Protech Roofing & Wall Cladding Limited | Construction | 1999 |
| Proweld Limited | Wholesale & retail | 2001 |
| Pwhs Limited | Real estate | 2005 |
| Q E D Scaffolding Limited | Other services | 1995 |
| Quality Foods Deli Ltd | Hospitality | 2007 |
| Quality Production Services Ltd | Manufacturing | 2006 |
| Quest Developments Limited | Construction | 2000 |
| Quickserve Electronics Limited | Wholesale & retail | 2002 |
| Quickstep Shoes Limited | | 1993 |
| Quickthrive Limited | | 1986 |
| R Betts Group Ltd | Financial services | 2024 |
| R Chawda Limited | Health & social care | 2019 |
| R J Lucas & Sons Limited | Construction | 2003 |
| R. J. Edwards & Company (Engineers) Limited | Manufacturing | 1961 |
| R. L. Ferris ( Accountants & Auditors ) Limited | Professional & scientific | 2002 |
| R. Sargeant Limited | Construction | 1997 |
| R.J. Edwards Limited | Manufacturing | 2003 |
| R.W. Haughton Limited | Wholesale & retail | 1934 |
| R.W.P.M. Limited | Other services | 2003 |
| Radio Yellow Top CAB (Southport) Limited | Transport & logistics | 1959 |
| RAF Electrical Limited | Construction | 2001 |
| Rainford Windows Limited | Construction | 2003 |
| Raiscorp Limited | Wholesale & retail | 2001 |
| Rapid Glazing & Windows Ltd | Construction | 2003 |
| Rapid Ties Limited | Manufacturing | 1987 |
| Rawcliffes Foods Limited | Wholesale & retail | 2006 |
| RBL Engineering Limited | Professional & scientific | 2006 |
| Rebecca Jackson Ltd | Other services | 2015 |
| Red Events Creative Limited | Other services | 2008 |
| Red Lion Caravan Centre Limited | Manufacturing | 2002 |
| Red Star Media Limited | Construction | 1999 |
| Redpool Projects Limited | Water & waste | 1991 |
| Reed Millican & Co Limited | Professional & scientific | 1915 |
| Refine Beauty Clinic Limited | Other services | 2003 |
| Reflex Graphics Limited | Arts & recreation | 1984 |
| Reform Construction Limited | Construction | 2005 |
| Remarkable Autism Limited | Education | 2004 |
| Rent Wirral Ltd | Administrative & support | 2010 |
| Revive (North West) Ltd. | Construction | 2005 |
| Richard Clitherow Limited | Wholesale & retail | 1946 |