| Plastic Technology Service Limited | Wholesale & retail | 1991 |
| Plate Finder Limited | Wholesale & retail | 2016 |
| Platinum Fire Safety Management Limited | Construction | 2010 |
| Playful Technology Limited | Information & communication | 2013 |
| Ploddipus Limited | Wholesale & retail | 2013 |
| Plough Holdings Limited | Real estate | 1974 |
| Ploutos Advisors Ltd | Professional & scientific | 2023 |
| Plum Works Ltd | Information & communication | 2025 |
| PMS Consultants Ltd | Administrative & support | 2025 |
| Pnconsult Ltd | Real estate | 2023 |
| Pocket-Geek Ltd | Professional & scientific | 2026 |
| Poet's Court (Horsham) Management Company Ltd | Households | 2007 |
| Polarcold Refrigeration Limited | Other services | 1991 |
| Polarity Automation Ltd | Manufacturing | 2007 |
| Polbrean House Ltd | Hospitality | 2026 |
| Pole Place Limited | Arts & recreation | 2014 |
| Polecat Cottages | Real estate | 2022 |
| Polina London Limited | Wholesale & retail | 2021 |
| Polo Premier League Limited | Arts & recreation | 2011 |
| Polteam Construction Ltd | Construction | 2023 |
| Polybitumens Limited | Construction | 1994 |
| Polygrafic Limited | Administrative & support | 2021 |
| Polymeric Material Failure Consultants Ltd | Professional & scientific | 2019 |
| Polymorit Ltd. | Manufacturing | 2017 |
| Pondtail Investments | Financial services | 2015 |
| Pondtail Properties | Real estate | 2011 |
| Pontem Learning Ltd | Education | 2025 |
| Pool Chemco Fowler Group Limited | Wholesale & retail | 2015 |
| Pool Schools (Sevenoaks) Ltd | Education | 2021 |
| Poovac Ltd | Wholesale & retail | 2014 |
| Popsoft Limited | Professional & scientific | 2004 |
| Port Derwent Properties Limited | Real estate | 2013 |
| Porters Pickups Ltd | Transport & logistics | 2026 |
| Portland Rose Investments Limited | Real estate | 2022 |
| Portmalco Limited | Financial services | 2020 |
| Portsoken Consultancy Limited | Professional & scientific | 2009 |
| Posfin Capital (Mayfair) Limited | Financial services | 2021 |
| Positive About Ltd | Professional & scientific | 2013 |
| Positive Diagnostics Ltd | Manufacturing | 2003 |
| Positive Lighting Installations Ltd | Construction | 2009 |
| Potbury Contracting Services Ltd | Construction | 2026 |
| Pots and Pithoi Holdings Limited | Financial services | 2017 |
| Pots and Pithoi Limited | Wholesale & retail | 2005 |
| Pottage 2000 Limited | Construction | 1998 |
| Potters PG Limited | Extraterritorial | 2009 |
| Poulton Gorse Developments Limited | Extraterritorial | 2008 |
| Pour Decisions Brewing Ltd | Manufacturing | 2026 |
| Powell Blinds Limited | Professional & scientific | 2004 |
| Power by the Hour Limited | Extraterritorial | 1987 |
| Power JET Wash UK Ltd | Administrative & support | 2025 |
| Power Media International Group Ltd | Information & communication | 2010 |
| Power Real Estate Limited | Construction | 2021 |
| Powerconsult International Ltd | Professional & scientific | 1999 |
| Powersoft Computer Services Limited | Information & communication | 1991 |
| PP Nominees Limited | Financial services | 2017 |
| PP Properties Ltd | Real estate | 2024 |
| PP Trustees Limited | Financial services | 2017 |
| PPF IT Consulting Limited | Information & communication | 2007 |
| PPM Music Events Ltd | Administrative & support | 2024 |
| Pragmatic CDM Services Limited | Construction | 2023 |
| Pranav Care Limited | Health & social care | 2016 |
| PRE Construction Support Services Ltd | Professional & scientific | 2024 |
| Prebook Recruitment Ltd | Administrative & support | 2025 |
| Precision Construction and Home Refurbishments Ltd | Construction | 2020 |
| Precision Surgery Ltd | Health & social care | 2014 |
| Premexample Limited | Wholesale & retail | 2024 |
| Premier Garden Service & Tree Work Ltd | Administrative & support | 2010 |
| Premier Golf Developments Limited | Arts & recreation | 1997 |
| Premier Managed Technologies Group Ltd | Wholesale & retail | 1990 |
| Premier Managed Technologies Ltd | Other services | 2018 |
| Premier Stonehouse Ltd | Construction | 2020 |
| Premier Timing Ltd | Information & communication | 2016 |
| Premium Outdoors Ltd | Wholesale & retail | 2025 |
| Premium Planning Ltd | Professional & scientific | 2024 |
| Prempoint Ltd | Professional & scientific | 2025 |
| Press House (Horsham) Limited | Households | 2017 |
| Presswire Limited | Professional & scientific | 2003 |
| Prestige Packaging Solutions Limited | Transport & logistics | 2005 |
| Prestige Travel Management Ltd | Administrative & support | 2015 |
| Prestige Yacht Charter LLP | | 2006 |
| Price & Product Pioneering Ltd | Professional & scientific | 2023 |
| Pries Appliances Limited | Other services | 2021 |
| Prima Care PVT Limited | Real estate | 2016 |
| Primal Flame Ltd | Manufacturing | 2022 |
| Primary Care Clinical Excellence (Pcce) Limited | Health & social care | 2024 |
| Prime Care Domiciliary Limited | Health & social care | 2017 |
| Prime Care PVT Ltd | Administrative & support | 2014 |
| Prime Horseboxes Ltd | Manufacturing | 2016 |
| Prime Meditech Limited | Administrative & support | 2018 |
| Prime Performance Collective Ltd | Administrative & support | 2023 |
| Prime Properties Development Ltd | Real estate | 2020 |
| Prime Properties Horsham Ltd | Real estate | 2026 |
| Prime Square Holdings Limited | Financial services | 2026 |
| Prime Square Services Ltd | Construction | 2022 |
| Prime Stables Limited | Manufacturing | 2003 |
| Prime Timber Buildings Limited | Construction | 2017 |
| Primecare Care Homes Ltd | Financial services | 2022 |
| Primeway Homes Limited | Real estate | 2025 |
| Primexal Ltd | Information & communication | 2021 |
| Primitive Music UK Limited | Information & communication | 2017 |