| Ordapay Limited | Information & communication | 2018 |
| Oregon Commodities Ltd | Professional & scientific | 2019 |
| Oriel House Property Investment LLP | | 2006 |
| Ormskirk Skip Hire Ltd | Water & waste | 2024 |
| Ormskirk Skips Ltd | Water & waste | 2023 |
| Ossetsound Limited | Wholesale & retail | 1982 |
| OWL Live Ltd | Administrative & support | 2004 |
| OX London Ltd | Wholesale & retail | 2026 |
| OX3 Consult Ltd | Information & communication | 2023 |
| Oxton Consultancy Limited | Professional & scientific | 2026 |
| Oymu Limited | Wholesale & retail | 2025 |
| Ozana Ltd | Transport & logistics | 2019 |
| P B D Offshore Services Ltd | Construction | 2022 |
| P B Potla Ltd | Health & social care | 2021 |
| P K Grocery Limited | Wholesale & retail | 2019 |
| P&A Lifting Ltd | Construction | 2025 |
| P-Wave Geophysics Ltd | Professional & scientific | 2022 |
| P. Harvey Nostalgia Co. Limited | Wholesale & retail | 2000 |
| PA Booze Store Ltd | Wholesale & retail | 2026 |
| Pablo Bootle Ltd | Hospitality | 2025 |
| Pablos RE Railing Team Ltd | Construction | 2023 |
| Panoramic Windows NW Limited | Manufacturing | 2025 |
| Papa Bear Barber Ltd | Other services | 2022 |
| Papj Property Ltd | Construction | 2021 |
| Paradigm AD Ltd | Other services | 2025 |
| Paragon Groundtech Solutions Ltd | Construction | 2025 |
| Paragon UK Properties Ltd | Real estate | 2018 |
| Park Holdco Limited | Professional & scientific | 2022 |
| Parkfield Surfacing Ltd | Construction | 2023 |
| Partitions and Acoustic Performance Limited | Construction | 2025 |
| Parts Heaven Limited | Administrative & support | 2024 |
| Passive Fire Supplier Ltd | Wholesale & retail | 2024 |
| Patty Studios Ltd | Wholesale & retail | 2025 |
| Paul Horton Garden Services Limited | Administrative & support | 2009 |
| Payroll Providers (NW) Ltd | Administrative & support | 2025 |
| PB Services Edition Ltd | Transport & logistics | 2019 |
| PB Site Engineering Services Ltd | Manufacturing | 2020 |
| PBS Bathroom Installation & Plumbing Limited | Construction | 2015 |
| PC Electrical NW Ltd | Construction | 2026 |
| PDB Civils Construction Ltd | Construction | 2020 |
| Pent Welding and Fabrication Ltd | Manufacturing | 2026 |
| People First Merseyside Company Limited | Health & social care | 2005 |
| Perfectime Ltd | Wholesale & retail | 2026 |
| Perischine GAS Limited | Construction | 2020 |
| Periscope Productions Community Interest Company | Arts & recreation | 2010 |
| Perluda Properties Ltd | Real estate | 2026 |
| Personalised Transformative Support Network CIC | Education | 2026 |
| Pestcontroltoyou Ltd | Administrative & support | 2022 |
| Peter Brindle Limited | Construction | 2013 |
| Peter Marsh & Sons,Limited | Manufacturing | 1922 |
| Petris Motors Ltd | Wholesale & retail | 2025 |
| PFM Vascular Consultant Ltd | Health & social care | 2010 |
| Pghl Topco Limited | Financial services | 2025 |
| PGR Financial Limited | Financial services | 2024 |
| PH Wind Ltd | Construction | 2026 |
| PH3 Design & Architecture Ltd | Professional & scientific | 2015 |
| Pharma Fabrications Limited | Manufacturing | 2003 |
| Phoenix Care & Education Ltd | Health & social care | 2015 |
| Phronesis Carelink Services CIC | Education | 2026 |
| Phronesis Global Academy Ltd | Education | 2026 |
| Phronesis Infrastructure Partners Ltd | Professional & scientific | 2026 |
| Pick Padel Ltd | Arts & recreation | 2024 |
| Pineapple Supplies Limited | Wholesale & retail | 2022 |
| Pizza Eaza Fresh Food Ltd | Hospitality | 2024 |
| Pizza Hot 4 YOU Ltd | Hospitality | 2026 |
| Pizza Plus L30 Ltd | Hospitality | 2026 |
| Pizza Villa Nice Food Ltd | Hospitality | 2024 |
| PJ Maher Ltd | Hospitality | 2026 |
| PJS Property (NW) Ltd | Real estate | 2023 |
| PK Upvc Ltd | Construction | 2025 |
| Platinum Developments (NW) Limited | Real estate | 2020 |
| Platinum Safe and Secure Limited | Health & social care | 2023 |
| PLS Lacey Developments Limited | Real estate | 2025 |
| PM Developments (NW) Ltd | Construction | 2019 |
| PM Planning Limited | Professional & scientific | 2025 |
| PM Vehicle Solutions Ltd | Wholesale & retail | 2020 |
| PO Convenience Store Ltd | Wholesale & retail | 2025 |
| Pocoyo Bubble Tea Ltd | Hospitality | 2024 |
| Podolsky Press Ltd | Wholesale & retail | 2021 |
| Pol-Trans-Mazi Ltd | Transport & logistics | 2016 |
| Polyfusion Labs Limited | Professional & scientific | 2023 |
| Popes (Hightown) Limited | Construction | 1986 |
| Poppy Kay's Wish CIC | Education | 2026 |
| Poseidon Investments Limited | Real estate | 1996 |
| Posh Pods North West Ltd | Construction | 2019 |
| Posp Limited | Hospitality | 2025 |
| Pound Bargain Melton Store Ltd | Wholesale & retail | 2023 |
| Pound Booster Ltd | Wholesale & retail | 2025 |
| POW Psychology Ltd | Other services | 2025 |
| Power Construction & Maintenance Ltd | Construction | 2024 |
| Powersport Engineering C.I.C. | Manufacturing | 2019 |
| Pragmatic Controls Installation Limited | Construction | 2014 |
| Precision Neurosurgery Ltd | Health & social care | 2022 |
| Premier Fencing (NW) Limited | Manufacturing | 2020 |
| Premiere Printing Company Limited | Manufacturing | 1991 |
| Premiership Academy Racing Limited | Arts & recreation | 2017 |
| Prescott's Inspection Site Services Ltd | Wholesale & retail | 2015 |
| Presidential Travel Ltd | Transport & logistics | 2008 |
| Prestige Aluminium Bifolds Limited | Construction | 2019 |
| Prestige Blind Company Limited | Other services | 2025 |