| Paraclete Prayer Ministry CIC | Other services | 2026 |
| Parbo Ltd | Financial services | 2024 |
| Park ROW Pickwell Management Company Ltd | Households | 2025 |
| Parker Store Ltd | Wholesale & retail | 2026 |
| Partnership (UK) Limited | Education | 1989 |
| Paste Architects Ltd | Professional & scientific | 2018 |
| Paste Golf Design Ltd | Professional & scientific | 2023 |
| Paul Osgood Limited | Professional & scientific | 2009 |
| Paul Sheehan Building and Groundworks Limited | Construction | 2010 |
| Paws Claws & Wings Ltd | Education | 2025 |
| Paydsurmai Limited | Financial services | 2023 |
| Paydyn Advisers Limited | Professional & scientific | 2024 |
| Paydyn Financial Limited | Professional & scientific | 2004 |
| Paze Finance Limited | Financial services | 2015 |
| Peach Mortgage Portal Limited | Financial services | 2020 |
| Peachy Belts Limited | Wholesale & retail | 2007 |
| Pedleyit Limited | Information & communication | 2024 |
| Peesemaker Limited | Education | 2007 |
| PEH Global Ltd | Wholesale & retail | 2025 |
| Pelforth Developments Limited | Real estate | 2003 |
| Pelham James Limited | Real estate | 2018 |
| PEN Wright Limited | Information & communication | 2014 |
| Penny Guides Limited | Information & communication | 2012 |
| Perky Group Ltd | Wholesale & retail | 2025 |
| Peter Barker Fine Art Limited | Arts & recreation | 2014 |
| Peter Bradley Consulting Ltd | Professional & scientific | 2024 |
| Peterborough Christmas Trees Ltd | Wholesale & retail | 2024 |
| Petjets Limited | Transport & logistics | 2017 |
| PG Agencies Limited | Wholesale & retail | 2023 |
| PGT123 Limited | Professional & scientific | 2023 |
| Phillips Family Property Co Limited | Wholesale & retail | 2019 |
| Phoenix Rail and Engineering Ltd | Construction | 2019 |
| Physiohands Limited | Health & social care | 2009 |
| Pioneer Developments Ltd | Construction | 2024 |
| Pipecrown Limited | Information & communication | 1998 |
| Pippin Wood Ltd | Arts & recreation | 2025 |
| Pippins Potions Ltd | Wholesale & retail | 2024 |
| Plus Consulting Limited | Professional & scientific | 2023 |
| PNB Technical Services Ltd | Real estate | 2007 |
| Poach'D Ltd | Wholesale & retail | 2025 |
| Pollen Floristry Ltd | Wholesale & retail | 2015 |
| Polyjam Limited | Professional & scientific | 2018 |
| Poseidon Scientific Services Group Ltd | Professional & scientific | 2025 |
| Positive Electrical Solutions Limited | Construction | 2004 |
| Positive Trend Limited | Real estate | 1999 |
| Possiblyevo Ltd | Wholesale & retail | 2024 |
| Power Global Limited | Information & communication | 2024 |
| PPA Finance Limited | Administrative & support | 2016 |
| Pragmatic Associates Ltd. | Professional & scientific | 1998 |
| Praxidice Limited | Professional & scientific | 2025 |
| Prebendal Holdings Limited | Professional & scientific | 2021 |
| Precast Solutions UK Limited | Wholesale & retail | 2024 |
| Precision Landscapes Limited | Extraterritorial | 2014 |
| Prestige Spares Limited | Wholesale & retail | 2020 |
| Prestige Tattoos Ltd. | Other services | 2019 |
| Preston Court Management Company (Preston) Limited | Households | 1998 |
| PRH Partnership Limited | Manufacturing | 2012 |
| Price Hambleton Investments Limited | Financial services | 2018 |
| Prickle&Stem Ltd | Wholesale & retail | 2023 |
| Pro Storm Solutions Limited | Manufacturing | 2013 |
| PRO2 Solutions Ltd | Administrative & support | 2026 |
| Professional Online Servicex Ltd | Education | 2025 |
| Property Pathways Limited | Professional & scientific | 2010 |
| Property Pioneers Trading Limited | Real estate | 2011 |
| Property Price Advice Limited | Administrative & support | 2013 |
| Property Price Advice.Co.Uk Limited | Administrative & support | 2012 |
| Property Search Advice Limited | Information & communication | 2007 |
| Prospect Generator Limited | Extraterritorial | 2022 |
| PSP Middle East Limited | Professional & scientific | 2024 |
| Psychedelic Experience Clinic Ltd | Health & social care | 2024 |
| PTK Consultancy Ltd | Professional & scientific | 2024 |
| Pubs Reborn Ltd | Real estate | 2025 |
| Pubstars Limited | Administrative & support | 2005 |
| Purple Thinking Limited | Information & communication | 1998 |
| PW Ellis & Co Ltd | Wholesale & retail | 2010 |
| Quad D Properties Ltd | Real estate | 2021 |
| Quantix Consulting Limited | Professional & scientific | 2017 |
| Quantrill Designs Limited | Professional & scientific | 2024 |
| Quantum 55 Services Ltd | Real estate | 2019 |
| Quibble Content Ltd | Professional & scientific | 2016 |
| Quizstars Limited | Extraterritorial | 2006 |
| QUO Vadis Soho Limited | Hospitality | 2007 |
| R & R Mills Contractors Limited | Construction | 2007 |
| R L Import Limited | Wholesale & retail | 2003 |
| R Morgan Electrical Services Limited | Construction | 2006 |
| R S & K Lawson Limited | Administrative & support | 2009 |
| R&J Strategic Investments Ltd | Real estate | 2025 |
| Radonsmart Ltd | Professional & scientific | 2021 |
| Rajesh Munglani Limited | Health & social care | 2010 |
| Rajesh Munglani Medicolegal Limited | Health & social care | 2007 |
| RCR Group Limited | Construction | 2016 |
| Realistic Agri Limited | Wholesale & retail | 1996 |
| Red Book Insurance Consulting Limited | Professional & scientific | 2009 |
| Red Flair Limited | Wholesale & retail | 2008 |
| Red FOX Vape Limited | Wholesale & retail | 2019 |
| Red Oblong Limited | Information & communication | 2006 |
| Red Tiger Marketing Trading Limited | Professional & scientific | 2024 |
| Red Willow IT Ltd | Information & communication | 2010 |
| Redbrick Solutions (UK) Limited | Information & communication | 2001 |
| Redfish Creative Ltd | Information & communication | 2011 |