| POP Art (Leeds) Limited | Manufacturing | 1990 |
| POP N Rock Limited | Arts & recreation | 2024 |
| POP Optics Ltd | Wholesale & retail | 2025 |
| POP UP and Play Events Limited | Other services | 2015 |
| Pop&Merge Ltd. | Information & communication | 2023 |
| Popina's Ltd. | Hospitality | 2009 |
| Poplar Care Ltd | Health & social care | 2022 |
| Poplar Farm Haulage Ltd | Transport & logistics | 2025 |
| Poplar Products (Leeds) Limited | Manufacturing | 1950 |
| Poplar Properties Ltd | Real estate | 2024 |
| Poplar Walk Ltd | Professional & scientific | 2024 |
| Poplars (Management) Limited (the) | Real estate | 1963 |
| Poppi Contract Furniture Ltd | Manufacturing | 2016 |
| Poppies Properties Ltd | Real estate | 2021 |
| Poppins Properties LLP | | 2019 |
| Poppy Forrest Ltd | Manufacturing | 2022 |
| Poppy-Lee Limited | Arts & recreation | 2023 |
| Poppy’S Collectables Ltd | Wholesale & retail | 2025 |
| Popsickle Ltd | Information & communication | 2016 |
| Populus Resources Limited | Administrative & support | 2013 |
| Porex Ltd | Professional & scientific | 2012 |
| Porschtek Limited | Wholesale & retail | 2008 |
| Portal Osborne Properties Limited | Real estate | 2025 |
| Portcullis Project and Cost Management Limited | Professional & scientific | 2018 |
| Porter & Sage Ltd | Wholesale & retail | 2025 |
| Porterfield Holding Company Limited | Financial services | 2019 |
| Portfolio 15 Ltd | Real estate | 2017 |
| Porth Investments Limited | Construction | 2001 |
| Porthos Inter Pro Ltd | Real estate | 2017 |
| Portland Distribution Ltd | Wholesale & retail | 2018 |
| Portland House Investment Group Limited | Construction | 1979 |
| Portland House Investments Limited | Professional & scientific | 1953 |
| Portland Place (Leeds) Management Company Limited | Households | 2000 |
| Portone Data Ltd | Construction | 2019 |
| Portpatrick Management Limited | Real estate | 2018 |
| Portside Kirkstall Ltd | Hospitality | 2022 |
| Portsoken Ltd | Financial services | 2013 |
| Portwest Limited | Information & communication | 1989 |
| Posco Car Parts Ltd | Wholesale & retail | 2026 |
| Poseidon Coding Limited | Professional & scientific | 2013 |
| Posh Cheese Ltd | Wholesale & retail | 2026 |
| Poshte BAM Ltd | Hospitality | 2026 |
| Posie & INK Limited | Wholesale & retail | 2025 |
| Positive Action for Refugees and Asylum Seekers | Health & social care | 2006 |
| Positive Energy Consulting Ltd | Professional & scientific | 2017 |
| Positive Futures WY CIC | Education | 2020 |
| Positive Impact Partners Ltd | Professional & scientific | 2026 |
| Positive Influence Limited | Professional & scientific | 2018 |
| Positive Life Choices Limited | Extraterritorial | 2007 |
| Positive Marker Limited | Financial services | 2019 |
| Positive OT & Case Management Ltd. | Health & social care | 2017 |
| Positive OT Experts Ltd | Health & social care | 2025 |
| Positive Positioning Ltd | Health & social care | 2008 |
| Positive PUB Solutions Ltd | Hospitality | 2009 |
| Post Recruitment Limited | Administrative & support | 2014 |
| Postcode Pathways Ltd | Hospitality | 2026 |
| Posterity Limited | Construction | 2001 |
| Posterity Milestone Consortium Limited | Information & communication | 2018 |
| Posthuman Sound Ltd | Information & communication | 2025 |
| Postilion Limited | Transport & logistics | 2005 |
| Postipy Ltd | Wholesale & retail | 2025 |
| Posture Pilates Ltd | Other services | 2024 |
| Postworth Limited | Administrative & support | 1990 |
| POT House Stoves Limited | Administrative & support | 2015 |
| Potashnick Properties Ltd | Real estate | 2024 |
| Potent Positioning Limited | Professional & scientific | 2024 |
| Potentia Search Limited | Administrative & support | 2023 |
| Potential Careers Ltd | Administrative & support | 2026 |
| Potential IT Ltd | Information & communication | 2015 |
| Potise UK Co Limited | Manufacturing | 2015 |
| Potomac Capital Limited | Construction | 2005 |
| Potraviny Leeds Limited | Wholesale & retail | 2023 |
| Pots of Lahore Ltd | Hospitality | 2024 |
| Potter Cleaning Supplies Limited | Wholesale & retail | 2001 |
| Potter Group Ltd | Financial services | 2023 |
| Potter Leasing Limited | Extraterritorial | 1992 |
| Potter Space (Selby) Limited | Real estate | 2023 |
| Potter Space Limited | Administrative & support | 2019 |
| Potter Space Selby Management Company Ltd | Real estate | 2026 |
| Potternewton Park Rollers CIC | Education | 2024 |
| Potterton Medical Services Limited | Health & social care | 2019 |
| Potterton Properties Limited | Construction | 2022 |
| Pottery Cat Ltd | Manufacturing | 2026 |
| Pottery Lane Farm Ltd | Real estate | 2023 |
| Potting Shed Properties Limited | Real estate | 2023 |
| Potting Shed Trading Management Limited | Professional & scientific | 2018 |
| Poucher PR Ltd | Professional & scientific | 2015 |
| Pougoue Limited | Health & social care | 2014 |
| Pound Plus DIY Limited | Wholesale & retail | 2026 |
| Pound Plus Home Ltd | Wholesale & retail | 2018 |
| Poundstime Ltd | Hospitality | 2022 |
| Pour-Tipple Limited | Hospitality | 2026 |
| POV Media Ltd | Information & communication | 2022 |
| Powder Coaters Limited | Manufacturing | 1995 |
| Powell Plumbing & Heating Ltd | Construction | 2018 |
| Powell Transport Limited | Transport & logistics | 2003 |
| Powells Plumbing Heating & GAS Services Limited | Energy | 2016 |
| Power & Dangerfield Limited | Information & communication | 2023 |
| Power 2 Grid Consultancy Services Ltd | Professional & scientific | 2025 |
| Power 4 Today Limited | Professional & scientific | 2025 |