| Oakwood Farm Mews Limited | Hospitality | 2016 |
| Oakwood Farm Touring Park Limited | Hospitality | 2016 |
| Oculoplastic Limited | Health & social care | 2011 |
| Oculus CP Limited | Extraterritorial | 2016 |
| Oculus FM Limited | Administrative & support | 2014 |
| Oculus Security Solutions Limited | Administrative & support | 2014 |
| Offshore Electrical Resources Ltd. | Administrative & support | 2007 |
| Olaf Instrument Engineering Limited | Professional & scientific | 2007 |
| OMC Worldwide Limited | Professional & scientific | 2015 |
| ON the UP (Holdings) Limited | Wholesale & retail | 2021 |
| One Source Digital Ltd | Information & communication | 2018 |
| Only Figures and Collectables Limited | Wholesale & retail | 2024 |
| Onshore 4 Offshore Ltd | Administrative & support | 2017 |
| Onsite Vehicle Maintenance Limited | Administrative & support | 2003 |
| Opus 125 Consulting Limited | Administrative & support | 2015 |
| OR Integration Ltd | Information & communication | 2025 |
| Orca Ventara Ltd | Professional & scientific | 2024 |
| Osprey Projects Ltd | Professional & scientific | 2014 |
| Outrageous PR Ltd | Professional & scientific | 2017 |
| Owen Roller Shutters Ltd | Administrative & support | 2010 |
| P. F. Design Limited | Administrative & support | 2009 |
| P.J. Property Services Limited | Administrative & support | 2004 |
| PAC Marine Ltd | Professional & scientific | 2024 |
| Packaged Properties Limited | Real estate | 2018 |
| Packaging for the Future Ltd | Professional & scientific | 2019 |
| Pagoda Property Group Limited | Real estate | 2024 |
| PAL Property Management Ltd | Administrative & support | 2009 |
| Pannon Engineering Ltd | Manufacturing | 2018 |
| Pantheon Property Developments Ltd | Construction | 2018 |
| Panther Customs Ltd | Professional & scientific | 2020 |
| Papa Grayston Limited | Real estate | 2018 |
| Paramed Group Ltd | Health & social care | 2021 |
| Paratus (North West) Limited | Administrative & support | 2019 |
| Parity Computers Limited | Manufacturing | 1995 |
| Park Court Testing Limited | Administrative & support | 2013 |
| Parsons Software Associates Ltd | Information & communication | 2018 |
| Partios UK Ltd | Administrative & support | 2023 |
| Pasifika Plumbing and Heating Ltd | Construction | 2024 |
| Patrem Limited | Administrative & support | 2007 |
| Paul Schoneveld Limited | Transport & logistics | 2012 |
| Payments Intellect Limited | Financial services | 2014 |
| PCL Direct Group Ltd | Manufacturing | 2015 |
| Pegasus Innovations Limited | Manufacturing | 2024 |
| Peninsula Car & Van Hire Ltd | Administrative & support | 2021 |
| Peninsula Speech Therapy Limited | Health & social care | 2022 |
| Peninsular Food Ingredients Ltd | Hospitality | 2024 |
| Penketh's Limited | Wholesale & retail | 1976 |
| Pensby Windows and Conservatories Limited | Manufacturing | 2011 |
| Pepper Street Investment Limited | Hospitality | 2021 |
| Pet-First Limited | Professional & scientific | 2018 |
| Phantom Foundry Limited | Information & communication | 2013 |
| Pinewood Design Services Limited | Professional & scientific | 2007 |
| PJS Software Solutions Limited | Information & communication | 2007 |
| Planet Employment Limited | Professional & scientific | 2013 |
| Plant Building Developments Ltd | Administrative & support | 2016 |
| Platinum Psychotherapy Service Ltd | Health & social care | 2019 |
| Pleavin Power Ltd | Manufacturing | 2017 |
| Pleavin Property Limited | Real estate | 2020 |
| PLS Nurseries Limited | Health & social care | 2017 |
| Polymers With PEP Ltd | Professional & scientific | 2024 |
| POP in Pets Franchising Ltd | Administrative & support | 2021 |
| Port Sunlight Trailer Co. Limited | Manufacturing | 1978 |
| Powell Property Solutions Limited | Real estate | 2016 |
| PPH Trading Limited | Financial services | 2012 |
| Praxis Power Engineering & Design Limited | Administrative & support | 2009 |
| Precise Ledger Services Ltd | Professional & scientific | 2024 |
| Premiair Plant Hire & Water Jetting Services Limited | Administrative & support | 2001 |
| Primeng Ltd | Administrative & support | 2012 |
| Pro Definition Limited | Arts & recreation | 2021 |
| Pro Switch Ltd | Energy | 2020 |
| Pro-Lab Diagnostics Limited | Extraterritorial | 2017 |
| Probody Fitness Ltd | Administrative & support | 2011 |
| Production Accountant Ltd | Administrative & support | 2008 |
| Profile Plastering London Ltd | Construction | 2022 |
| Profit Shield Limited | Professional & scientific | 2024 |
| Profit Training Limited | Professional & scientific | 2005 |
| Project - Record Management Services Limited | Professional & scientific | 2007 |
| Promotive Group Limited | Professional & scientific | 2005 |
| Psalm Ltd | Health & social care | 2018 |
| Pulford Place Management Limited | Households | 2023 |
| Pure Conservatories Limited | Construction | 2024 |
| PVE Consulting Ltd | Professional & scientific | 2007 |
| Quality Engineering (Wirral) Limited | Manufacturing | 2002 |
| Quatrieme Ltd | Wholesale & retail | 2022 |
| Quest Medico Legal Ltd. | Health & social care | 2015 |
| Quovisiam Ltd | Administrative & support | 2007 |
| R & D Property Rentals Limited | Real estate | 2018 |
| R F Lifting & Access Limited | Other services | 2003 |
| R F Marine Limited | Professional & scientific | 2013 |
| R Garnett Ltd | Professional & scientific | 2014 |
| R W Sports Limited | Arts & recreation | 2025 |
| R&S Services NW Ltd | Wholesale & retail | 2026 |
| R.L.& M.L. Management Limited | Administrative & support | 2002 |
| RAO Medical Consultancy Limited | Health & social care | 2014 |
| Razorstorm Limited | Professional & scientific | 2011 |
| RCH Builders Limited | Construction | 2017 |
| Rcsk Management Limited | Professional & scientific | 2025 |
| REA Project Management Limited | Professional & scientific | 2014 |
| Recover Collect Ltd | Administrative & support | 2020 |
| Redburn Operational Services Ltd | Administrative & support | 2010 |