| Powertech Trades Ltd | Wholesale & retail | 2026 |
| PPL Working Ltd | Households | 2020 |
| PR Campaign Ltd | Professional & scientific | 2023 |
| Pragmatic Procurement Solutions Limited | Administrative & support | 2010 |
| Prebookers Limited | Professional & scientific | 2022 |
| Precision Abodes Limited | Real estate | 2020 |
| Precision Fire Solutions Ltd | Public administration | 2022 |
| Precision Kitchens Limited | Construction | 2010 |
| Precision Sheet Engineering Limited | Professional & scientific | 2001 |
| Precisionlife Ltd | Professional & scientific | 2013 |
| Premier Auto Valeting Limited | Administrative & support | 2005 |
| Premier Choice Mortgages Limited | Financial services | 2004 |
| Premier Cotswolds Removals Ltd | Transport & logistics | 2025 |
| Premier Property Living Limited | Real estate | 2025 |
| Premier Property Partners Limited | Professional & scientific | 2022 |
| Premium Property Investments Ltd | Extraterritorial | 2016 |
| Prepare to Publish Limited | Information & communication | 2011 |
| Presentlocker.Com Limited | Wholesale & retail | 2011 |
| Press-Tige Sales Limited | Wholesale & retail | 2012 |
| Pressburst Limited | Information & communication | 2006 |
| Pressed Steel Company Limited | Professional & scientific | 2002 |
| Prestbury Nursery Gardens Limited | Real estate | 1973 |
| Prestige Buildings Limited | Construction | 2004 |
| Prestige Floors Ltd | Construction | 2019 |
| Prestige Gardens & Landscape Services Ltd | Construction | 2018 |
| Prestine Home Care Limited | Health & social care | 2015 |
| Presto Engineering | Manufacturing | 1999 |
| Presto Finishing Limited | Financial services | 2023 |
| Presto Holdings Limited | Financial services | 2020 |
| Pretty Cool Investments Limited | Real estate | 2018 |
| Previdi Transport Ltd | Transport & logistics | 2024 |
| Prickly Pear Skincare Ltd | Wholesale & retail | 2025 |
| Prime Compliance Services Limited | Water & waste | 2016 |
| Prime Content Ltd | Information & communication | 2022 |
| Prime Talent Agency Ltd | Other services | 2022 |
| Primestar (42M) Nominees Ltd | Financial services | 2025 |
| Primestar (Avid Gold) Nominees Ltd | Financial services | 2026 |
| Primestar (Emergence) Nominees Ltd | Financial services | 2025 |
| Primestar (GH2) Nominees Ltd | Financial services | 2024 |
| Primestar (Phyteau) Nominees Ltd | Financial services | 2024 |
| Primestar (Regenera) Nominees Ltd | Financial services | 2024 |
| Primestar (Sunshine Labs) Nominees Ltd | Financial services | 2024 |
| Primestar (Three-Sixty Aquaculture) Nominees Ltd | Financial services | 2024 |
| Primestar Industries Ltd | Professional & scientific | 2023 |
| Primestar Nominees Ltd | Financial services | 2023 |
| Primo Limited | Financial services | 1971 |
| Print Paper Scissors Limited | Wholesale & retail | 2015 |
| Print Ready Ltd | Manufacturing | 2018 |
| Printpool Additive Manufacturing Ltd | Manufacturing | 2020 |
| Priority Counsel Limited | Professional & scientific | 1998 |
| Prism Automation (UK) Ltd | Professional & scientific | 2019 |
| Prism AV Ltd | Professional & scientific | 2022 |
| Prismtechconsult Limited | Professional & scientific | 2022 |
| Prithvi RAJ Limited | Administrative & support | 2017 |
| Private Payroll Limited | Administrative & support | 2002 |
| Prizeshark Ltd | Administrative & support | 2005 |
| Pro IT Labs Limited | Professional & scientific | 2012 |
| Pro Prep (Oxford) Ltd | Manufacturing | 2025 |
| Pro Valeting and Tinting Limited | Wholesale & retail | 2018 |
| Pro-Polishers (Metal Finishers) Limited | Professional & scientific | 2013 |
| Pro-Polishers Metal Polishing Specialist Ltd | Manufacturing | 2024 |
| Proactive Mobility Ltd | Wholesale & retail | 2013 |
| Proactive Professional Properties Ltd | Real estate | 2024 |
| Processfoundry Limited | Information & communication | 2009 |
| Procura Executive Search Limited | Administrative & support | 2019 |
| Prodevuk Limited | Professional & scientific | 2019 |
| Production Makers Ltd | Information & communication | 2022 |
| Professional Home Care Limited | Health & social care | 2009 |
| Proimmune Limited | Health & social care | 1999 |
| Project Homes Group Limited | Financial services | 2025 |
| Project Provenance Limited | Administrative & support | 2013 |
| Project Real Estate Limited | Real estate | 2018 |
| Project Wind Bidco Limited | Financial services | 2023 |
| Prometheus Editors Ltd | Information & communication | 2019 |
| Prominency Limited | Transport & logistics | 2022 |
| Propco (Upwood) Limited | Health & social care | 2021 |
| Propeel Clinics Ltd | Health & social care | 2020 |
| Properbi Limited | Wholesale & retail | 2018 |
| Property by KM Limited | Real estate | 2022 |
| Property Care (Complete Maintenance) Limited | Construction | 2002 |
| Property Care Holdings Limited | Financial services | 2021 |
| Property Maintenance & Gutterclear ( Oxford) Ltd | Administrative & support | 2019 |
| Property Service One Limited | Real estate | 2018 |
| Propertyportal.Com Limited | Information & communication | 2008 |
| Proposals of Witney Ltd | Wholesale & retail | 2018 |
| Prospect Pubs & Bars Limited | Hospitality | 2019 |
| Protect Your Nest Ltd | Information & communication | 2019 |
| Protronics Networks Ltd | Information & communication | 2013 |
| Proxy Node Networks Ltd | Manufacturing | 2022 |
| PS Motor Services Ltd | Transport & logistics | 1982 |
| Pscs Investments Limited | Extraterritorial | 2021 |
| PSI Ip-Intrusion Ltd | Administrative & support | 2017 |
| PSI IPV Limited | Information & communication | 2012 |
| PSI Topco Limited | Financial services | 2016 |
| Psymbio Limited | Professional & scientific | 2026 |
| PT Capital Limited | Professional & scientific | 2008 |
| PT Plumbing Services Limited | Construction | 2002 |
| PTD SPV Limited | Real estate | 2020 |
| Public Internet Limited | Information & communication | 2003 |
| Publican Drinks Ltd | Wholesale & retail | 2021 |