| Pollination Group Limited | Professional & scientific | 2020 |
| Polymath Bar Ltd | Hospitality | 2024 |
| Pommery Investments Limited | Real estate | 2013 |
| Pond Head Kennels Ltd | Other services | 2023 |
| Ponos of York Limited | Real estate | 2010 |
| Pontefract Motors Limited | Real estate | 1946 |
| Pool Bridge Cafe Ltd. | Hospitality | 2018 |
| Pool Bridge Farm Ltd | Agriculture & fishing | 2012 |
| Pool Lane Classics Ltd | Wholesale & retail | 2002 |
| POOLS4YOU Limited | Education | 2015 |
| Poon Properties Ltd. | Administrative & support | 2017 |
| Pope's Head Ltd | Real estate | 2021 |
| Poppleton Community Railway Nursery Ltd | Agriculture & fishing | 2007 |
| Poppleton Live Limited | Arts & recreation | 2014 |
| Poppleton MOT Centre Ltd | Wholesale & retail | 2025 |
| Poppleton Village Butchers Ltd | Wholesale & retail | 2026 |
| Poppy Caterers Limited | Hospitality | 2007 |
| Poppy Ventures Limited | Professional & scientific | 2023 |
| Porkys Autospares Ltd | Water & waste | 2006 |
| Porrifin Limited | Construction | 2006 |
| Port Marine Management Limited | Households | 2004 |
| Portakabin (Refurbished) Limited | Construction | 1994 |
| Portakabin (Site Accommodation) Limited | Administrative & support | 2006 |
| Portakabin Europe Limited | Financial services | 2013 |
| Portakabin Group Properties Limited | Construction | 1961 |
| Portakabin Holdco Limited | Professional & scientific | 2024 |
| Portakabin Limited | Manufacturing | 1961 |
| Portal Hotel Golf & Country Club Limited | Hospitality | 2005 |
| Portal Ventures LLP | | 2025 |
| Portesham Estates Limited | Real estate | 1994 |
| Porth Y Dyffryn (Merthyr Tydfil) Residents Management Company Limited | Households | 2023 |
| Porthmeor Group - Yorkshire Ltd | Professional & scientific | 2021 |
| Portholme Court Management Company Limited | Households | 2005 |
| Portico Portico Ltd | Manufacturing | 2022 |
| Portis Contract Services Limited | Professional & scientific | 2014 |
| Portland Analytics Limited | Professional & scientific | 2009 |
| Portland CSO Trading Limited | Financial services | 2012 |
| Portland Energy Limited | Extraterritorial | 2019 |
| Portland Fuel Holdings Limited | Financial services | 2023 |
| Portland Fuel Limited | Wholesale & retail | 2009 |
| Portland Fuel Trading Limited | Financial services | 2021 |
| Portland Grain Limited | Transport & logistics | 2025 |
| Portland Green Limited | Extraterritorial | 2019 |
| Portland Investments (York) Limited | Administrative & support | 2009 |
| Portland Park (Ashington) Management Company Limited | Real estate | 2014 |
| Portside (Builders) Limited | Real estate | 2005 |
| Portward Limited | Construction | 1987 |
| Positiv PR & Marketing Services Ltd | Administrative & support | 2010 |
| Positive Accountants (Services) Limited | Professional & scientific | 2006 |
| Positive Belief Limited | Other services | 2014 |
| Possession Planner York Limited | Professional & scientific | 2017 |
| Post Soviet Project Ltd | Hospitality | 2025 |
| Postal Remaps Limited | Information & communication | 2022 |
| Posthorse Mews Management Company Ltd | Households | 2023 |
| Potash Development Association | Agriculture & fishing | 1985 |
| Potential States Ltd | Manufacturing | 2025 |
| Potes Smart Homes Limited | Construction | 2019 |
| Potter Computer Solutions Limited | Other services | 2013 |
| Potter Developments Ltd. | Professional & scientific | 2001 |
| Pottergate Mews Management Company (NO. 2) Limited | Households | 2010 |
| Potton Developments Designs Limited | Construction | 2025 |
| Potton Developments Limited | Construction | 2018 |
| Potton Homes Limited | Construction | 2026 |
| Potton Property Limited | Real estate | 2021 |
| Potts 1969 Limited | Extraterritorial | 2013 |
| Poultry Health Services Limited | Extraterritorial | 2001 |
| POW Marketing Solutions Ltd | Information & communication | 2025 |
| Powell Resourcing Ltd | Administrative & support | 2023 |
| Power Body Nutrition Ltd | Wholesale & retail | 2009 |
| Power for Women Limited | Education | 2025 |
| Power Health Products Limited | Wholesale & retail | 1972 |
| Powerall Limited | Manufacturing | 2001 |
| Powerclean (Harrogate) Ltd | Other services | 2003 |
| Powerpivot Ltd | Information & communication | 2024 |
| Powerteq Limited | Administrative & support | 2015 |
| PP Snack Foods Limited | Wholesale & retail | 2013 |
| Ppbl Ltd | Arts & recreation | 2025 |
| Ppiy Limited | Professional & scientific | 2007 |
| PPL Digital Media Ltd | Information & communication | 2013 |
| PPL Engineering Services Ltd | Professional & scientific | 2019 |
| PPL Training Ltd | Education | 2000 |
| PPM Stoke Ferry Ltd | Construction | 2021 |
| PPP (York) Limited | Real estate | 2017 |
| PPS Flooring Ltd | Construction | 2021 |
| PRA Architecture Ltd | Professional & scientific | 2021 |
| Practical Consulting Ltd | Professional & scientific | 2023 |
| Practical Finance Co. Limited | Professional & scientific | 1954 |
| Practical Lean Agile Ltd | Professional & scientific | 2025 |
| Practice York Ltd | Health & social care | 2026 |
| Praetorian Risk & Security Ltd | Administrative & support | 2026 |
| Pragmatic Delivery Limited | Information & communication | 2011 |
| Pragmatic Enterprise Solutions Limited | Information & communication | 2016 |
| Prasanthi Ltd | Professional & scientific | 2024 |
| Praxis Operations Limited | Professional & scientific | 2018 |
| Praxium Limited | Administrative & support | 2024 |
| Precastpro Limited | Information & communication | 2014 |
| Precision Cutz Ltd | Construction | 2016 |
| Precision Joinery Services Ltd | Construction | 2025 |
| Precision Paint and Body Limited | Wholesale & retail | 2025 |
| Predixpeople Solutions Limited | Professional & scientific | 2024 |