| Organic Matter Ltd | Administrative & support | 2014 |
| Origin Projects NW Ltd | Construction | 2025 |
| Orinoco House Property Ltd | Real estate | 2025 |
| Orlando Villas Limited | Administrative & support | 2004 |
| Orumm Animal Health Limited | Financial services | 2019 |
| Orumm Limited | Financial services | 2016 |
| Osmss Limited | Health & social care | 2024 |
| Osom Entertainment Group Limited | Information & communication | 2024 |
| Outlet Hub Ltd | Wholesale & retail | 2025 |
| Outlook Imports Ltd | Wholesale & retail | 2015 |
| Outsourced Consulting Ltd | Professional & scientific | 2025 |
| Outsourced Utilities Ltd | Administrative & support | 2014 |
| Overleigh Orthodontics Limited | Health & social care | 2019 |
| Overpool Barber Shop Ltd | Other services | 2024 |
| OVM House UK Ltd | Wholesale & retail | 2024 |
| Owen Blackwood Craftmanship Limited | Manufacturing | 2026 |
| Oxdent Ltd | Health & social care | 2010 |
| Oxidonic Limited | Health & social care | 2022 |
| Ozgur 1 Ltd | Administrative & support | 2026 |
| P & J Scaffolding and Roofing Ltd | Construction | 2023 |
| P & S Wilson Technical Services Limited | Professional & scientific | 2024 |
| P J Beard and Associates Ltd | Health & social care | 2010 |
| P P Dog Park Ltd | Other services | 2022 |
| P&R Home Developments Ltd | Real estate | 2025 |
| P. H Property (North West) Ltd | Real estate | 2021 |
| P.C. Construction Limited | Construction | 1994 |
| P.I.P (Fletton Quays) Limited | Real estate | 2015 |
| P.I.P (Pleasure Fairs) Limited | Real estate | 2015 |
| P.J.S Plasterers Limited | Construction | 2024 |
| P.S.B Security Services Limited | Administrative & support | 2026 |
| P3 Plant Limited | Construction | 2004 |
| Palmer Business Consultancy Limited | Professional & scientific | 2009 |
| Palmer Primer Ltd | Administrative & support | 2018 |
| Palmer-Wilson Marketing Ltd | Professional & scientific | 2026 |
| Palmyra Bar Limited | Hospitality | 2022 |
| Pamper PAL Limited | Administrative & support | 2020 |
| Panda PWM Ltd | Other services | 2019 |
| Pandilla Ltd | Wholesale & retail | 2023 |
| Pandr Computing Ltd | Information & communication | 2014 |
| Paragon Building Safety Limited | Administrative & support | 2022 |
| Paragon Property Partnership Limited | Real estate | 2021 |
| Paramount Capital Ltd | Information & communication | 2025 |
| Paramount Estates (Lancashire) Limited(The) | Real estate | 1963 |
| Paravizion Ltd | Information & communication | 1996 |
| Parker Management Services (NW) Ltd | Construction | 2022 |
| Parkers Mini Buses (Ellesmere Port) Limited | Transport & logistics | 1975 |
| Parrydise Ltd | Information & communication | 2026 |
| PAT the Chef Ltd | Hospitality | 2019 |
| Patrick Bracau Ltd | Construction | 2015 |
| Paul Smith Consultancy Limited | Professional & scientific | 2019 |
| Paulie Properties Ltd | Construction | 2023 |
| Pave Gard Limited | Wholesale & retail | 2024 |
| Paving ETC Limited | Wholesale & retail | 2018 |
| Paving Traders Limited | Wholesale & retail | 2016 |
| Pawhaus Ltd | Wholesale & retail | 2025 |
| PBS Pathways Ltd | Education | 2025 |
| PC Estimating Limited | Information & communication | 2023 |
| Peak Investments International Ltd | Wholesale & retail | 2025 |
| Peanut Events Limited | Administrative & support | 2025 |
| Pearson and Elgood Ltd | Health & social care | 2024 |
| Peers & Rooney Training Limited | Administrative & support | 2011 |
| Pegasus Hydraulics Limited | Administrative & support | 2004 |
| Pegasus Takeaway Ltd | Hospitality | 2024 |
| Peking Kitchen 2026 Ltd | Hospitality | 2026 |
| Peking Kitchen 66 Ltd | Hospitality | 2025 |
| Pendergast Capital Group Holdings Limited | Administrative & support | 2015 |
| Peninsular Developments North West Limited | Construction | 2009 |
| Peninsular Scaffolding Group Limited | Construction | 2024 |
| Peninsular Scaffolding Limited | Construction | 2001 |
| Penny Lane Dental Ltd | Health & social care | 2025 |
| Penny's Farm Ltd | Agriculture & fishing | 2023 |
| Pepperell Marine & Engineering Ltd | Professional & scientific | 2025 |
| PER Aspera AD Astra Ltd | Information & communication | 2023 |
| Perfect Features Ltd | Information & communication | 2010 |
| Perfectly Defined Limited | Other services | 2017 |
| Perio & Implant Solutions Ltd | Health & social care | 2022 |
| Periopros Solutions Ltd | Health & social care | 2021 |
| Perissa Consulting Limited | Extraterritorial | 2019 |
| Peter Rowlands Radiology Services Ltd | Health & social care | 2019 |
| Peterborough Investment Partnership LLP | | 2014 |
| Petru Oprea Ltd | Transport & logistics | 2021 |
| PFW Contracting Limited | Construction | 2026 |
| PHC (GB) Limited | Information & communication | 2008 |
| PHC Group (Europe) Limited | Wholesale & retail | 2012 |
| PHC Group Investments Limited | Real estate | 2016 |
| PHD Creative Ltd | Information & communication | 2017 |
| Phil Davis Personal Training Limited | Health & social care | 2014 |
| Phiz Golf Limited | Arts & recreation | 2020 |
| Phoenix Highways Limited | Construction | 2022 |
| Phoenix House Motors Ltd | Wholesale & retail | 2024 |
| Phoenix Passive Fire Ltd | Administrative & support | 2026 |
| Phoenix Traffic Management Limited | Construction | 2022 |
| PHS Electronic Solutions Ltd | Manufacturing | 2013 |
| Physical Activity Partnership S.Wales LLP | | 2014 |
| PIG N COW Diner Ltd | Hospitality | 2020 |
| Piggl Ltd | Manufacturing | 2016 |
| Pink Butterfly Accounting Ltd | Professional & scientific | 2022 |
| Pipo Global Limited | Health & social care | 2022 |
| Pivott Ltd | Professional & scientific | 2024 |
| Pizzaport 68 Ltd | Hospitality | 2025 |