| Palms UK Horticultural Limited | Wholesale & retail | 2019 |
| Palmscapes Ltd | Administrative & support | 2022 |
| Pamoos Ltd | Wholesale & retail | 2022 |
| Pampered Rebel Limited | Professional & scientific | 2023 |
| PAN Artists Agency Limited | Arts & recreation | 2003 |
| Panchruby Ltd | Real estate | 2026 |
| Panda ANT Ltd | Wholesale & retail | 2018 |
| Panda Developments Southern Limited | Real estate | 2017 |
| Panda Logica Ltd | Information & communication | 2025 |
| Paper Mountain Limited | Transport & logistics | 2010 |
| Papermill Consulting Limited | Administrative & support | 2024 |
| Papilio Limited | Professional & scientific | 2023 |
| PAR Excellence Fabrication Ltd | Construction | 2016 |
| Parachem Limited | Professional & scientific | 2008 |
| Paradice Leisure Ltd | Professional & scientific | 2012 |
| Paragliding Guide Limited | Arts & recreation | 2019 |
| Paramedikal Ltd | Education | 2025 |
| Paramount Kitchen Design Limited | Extraterritorial | 2024 |
| Parchment Coffee Company Limited | Manufacturing | 2019 |
| Parchment Developments Ltd | Construction | 2023 |
| Parentco Ltd | Information & communication | 2024 |
| Pareto Cloud Development Ltd | Administrative & support | 2016 |
| Paris Mouldings Ltd | Construction | 2013 |
| Parish On-Line Limited | Real estate | 2015 |
| Parish Properties Limited | Real estate | 2009 |
| Park Day Nursery Pre-School Ltd | Education | 2007 |
| Park Gate (Mortgage & Protection) Limited | Financial services | 2004 |
| Park Lane Assets Ltd | Wholesale & retail | 2014 |
| Park Lane Farmhouse Ltd | Real estate | 2025 |
| Park Lane Pet Services Limited | Other services | 2019 |
| Park View Eastleigh Limited | Households | 2006 |
| Parkbreck Ltd | Other services | 2022 |
| Parkers Properties (South) Ltd | Real estate | 2021 |
| Parkgate Specsavers Limited | Wholesale & retail | 2007 |
| Parkgate Visionplus Limited | Wholesale & retail | 2007 |
| Parkhouse Restorers Limited | Construction | 2015 |
| Parkland Place Management Limited | Households | 1987 |
| Parkscape Property Ltd | Real estate | 2025 |
| Parkwest Property Holdings Ltd | Real estate | 2026 |
| Parkwood Management Company (Waterlooville) Limited | Administrative & support | 1989 |
| Parlofi Ltd | Information & communication | 2026 |
| Parphill Ltd | Real estate | 2017 |
| Parsons Financial Services Ltd | Financial services | 2019 |
| Parsons Green Land Limited | Construction | 2001 |
| Parsons Green London Limited | Construction | 2005 |
| Parsons Project UK Limited | Arts & recreation | 2014 |
| Parth Dental World Limited | Health & social care | 2023 |
| Partitio CIC | Hospitality | 2026 |
| Partnering Health Holdings Limited | Financial services | 2021 |
| Partnering Health Limited | Health & social care | 2008 |
| Partners in Coffee Limited | Wholesale & retail | 2020 |
| Parts Detective Ltd | Extraterritorial | 2014 |
| Passfield Commercial Limited | Real estate | 2015 |
| Passfield Estates Limited | Real estate | 1985 |
| Passfield Residential Limited | Real estate | 1953 |
| Passorpass Ltd | Education | 2025 |
| Pate Holdings Ltd | Real estate | 2026 |
| Path to Positivity Ltd | Health & social care | 2025 |
| Pathfinder Drone Ltd | Professional & scientific | 2018 |
| Patricks Holdings Ltd | Financial services | 2023 |
| Patstone & COX Limited | Real estate | 1906 |
| Pattinson and Ellis Ltd | Financial services | 2025 |
| Pattinson and Ellis Property Ltd | Real estate | 2025 |
| Paul Ford Management Services Ltd | Professional & scientific | 2023 |
| Paul Gransbury Ltd | Real estate | 2019 |
| Paul H Buiding and Maintenance Limited | Construction | 2012 |
| Paul Harrison Consulting Ltd | Administrative & support | 2023 |
| Paul Lindsell Ltd | Information & communication | 2018 |
| PAULWEST40 Ltd | Manufacturing | 2024 |
| Pavenet Ltd | Construction | 2013 |
| Pavilion 5 Management Limited | Households | 2016 |
| Pavingways Commercial & Domestic Ltd | Construction | 2010 |
| Pavwork Ltd | Manufacturing | 2025 |
| Paxton Road Freehold Limited | Households | 2021 |
| Paydrive Ltd | Information & communication | 2020 |
| Payepro Limited | Administrative & support | 2011 |
| Payoo Technology Limited | Information & communication | 2025 |
| PB Digital Limited | Administrative & support | 2001 |
| PB TCG Limited | Wholesale & retail | 2024 |
| Pbdb Ltd | Information & communication | 2013 |
| PBE CNC Limited | Manufacturing | 2012 |
| PC Building Works Limited | Construction | 2012 |
| PCD Fleet Wash Ltd | Wholesale & retail | 2025 |
| PCE Solutions Ltd | Mining & quarrying | 2022 |
| PCJ Quantum Limited | Administrative & support | 2025 |
| PCW Real Estate Limited | Construction | 2022 |
| PDA Plumbing Services and Property Maintenance Ltd | Construction | 2011 |
| PDL (Bournemouth) Limited | Construction | 2010 |
| PDM Technical Solutions Limited | Professional & scientific | 2001 |
| PDS Snowsport UK Ltd | Education | 2020 |
| PDS Support Solutions Limited | Public administration | 2016 |
| Peak Farms (Holdings) Limited | Agriculture & fishing | 2020 |
| Peak Farms Limited | Agriculture & fishing | 2022 |
| Peak Projects Ltd | Construction | 2025 |
| Pearl Properties (Pompey) Ltd | Real estate | 2025 |
| Pears Grove Management Company Ltd. | Households | 2004 |
| Pearsons Asset Management Limited | Financial services | 1982 |
| Pearsons Land & New Homes Limited | Real estate | 2002 |
| Pearsons Partnerships Limited | Other services | 1991 |
| Pearsons Southern Limited | Real estate | 1980 |