| Palmor Construction Ltd | Construction | 2023 |
| Pamhill Limited | Wholesale & retail | 2025 |
| Pana Estates Ltd | Real estate | 2025 |
| Panary Medics Ltd | Health & social care | 2025 |
| Panelview Ltd | Health & social care | 2022 |
| Pangolin Healthcare Ltd | Health & social care | 2024 |
| Pankuzi Ltd | Real estate | 2021 |
| Panther Aviation Limited | Transport & logistics | 1992 |
| Papooc Ventures Ltd | Wholesale & retail | 2023 |
| Paradise Bathrooms Limited | Wholesale & retail | 2015 |
| Paradise Haven Limited | Information & communication | 2025 |
| Paras Healthcare Private Limited | Health & social care | 2025 |
| Parcelmatch Limited | Transport & logistics | 2025 |
| Paringdon Community Leisure Ltd | Arts & recreation | 2013 |
| Paringdon Education & Training Ltd | Education | 2011 |
| Parity Highways Ltd | Financial services | 2026 |
| Park Court Tattenhoe Management Company Limited | Households | 2002 |
| Park LEA Court Ltd | Households | 2005 |
| Park Place House Limited | Households | 2002 |
| Park Place Westcliff RTM Company Limited | Households | 2017 |
| Park View Sidcup Management Company Limited | Households | 2015 |
| Parkend Facilities Management Limited | Professional & scientific | 2012 |
| Parker Bro's Ltd | Construction | 2026 |
| Parker Electrical Solutions Limited | Construction | 2014 |
| Parker Properties and Consultancy Ltd | Real estate | 2026 |
| Parkland Mews Management Company Limited | Households | 2004 |
| Parklands Plumbing Ltd | Construction | 2024 |
| Parkvibe Harlow Limited | Wholesale & retail | 2008 |
| Parkview (Cherry Hinton) Management Company Limited | Households | 2024 |
| Partners People Ltd | Professional & scientific | 2024 |
| Party Mubarak Ltd | Wholesale & retail | 2024 |
| Parva Green Residents Management Company Limited | Households | 2018 |
| Parwes Ltd | Health & social care | 2023 |
| Pash Events Ltd | Administrative & support | 2025 |
| Paspal Ltd | Health & social care | 2023 |
| Passport Legend Ltd | Professional & scientific | 2025 |
| Patacc | Health & social care | 2007 |
| Pathossy Ltd | Professional & scientific | 2020 |
| Patient Imperative Limited | Health & social care | 2021 |
| Patil Property Management Ltd | Real estate | 2024 |
| Paul & Pauls Limited | Real estate | 2023 |
| Paul Casey Building Services Limited | Construction | 2017 |
| Paul Dunkley Consultancy Limited | Professional & scientific | 2023 |
| Paul Matthews Services Ltd | Administrative & support | 2017 |
| Paul Street Studios Ltd | Information & communication | 2025 |
| Paul Sullivan Golf Ltd | Education | 2022 |
| Paul T Webster Limited | Administrative & support | 2013 |
| Pavillions Management Company Limited | Households | 1997 |
| Pawfect Strides Ltd | Agriculture & fishing | 2023 |
| Pawtsdrad Ltd | Manufacturing | 2026 |
| PAX Homes Limited | Construction | 2022 |
| PAX Romana Holdings Ltd | Financial services | 2020 |
| Paymaster Holdings Limited | Construction | 2021 |
| Payne Brothers Ltd | Real estate | 2025 |
| Payne's Plumbing & Heating Ltd | Construction | 2026 |
| Payroll Consultancy Group Limited | Professional & scientific | 2018 |
| Payroll Resourcing Group Limited | Professional & scientific | 2021 |
| PBH Ltd | Professional & scientific | 2023 |
| PBN Property Ltd | Real estate | 2025 |
| PBY Holdings Limited | Financial services | 2023 |
| Pcash Properties Limited | Real estate | 2023 |
| Pcash Recruitment Ltd | Administrative & support | 2025 |
| Pcfix Ltd | Information & communication | 2012 |
| Pcfix Tech Ltd | Information & communication | 2023 |
| PCO4U Ltd | Wholesale & retail | 2024 |
| PCT VIP Limited | Extraterritorial | 2017 |
| PCT VIP Marketing Ltd | Professional & scientific | 2020 |
| Pcworths & Data Associates Ltd | Information & communication | 2011 |
| PD Body Repairs Ltd | Manufacturing | 2016 |
| PD Heating & Plumbing Ltd | Construction | 2019 |
| PDN Transport Ltd | Transport & logistics | 2019 |
| PDS Design Solutions Limited | Wholesale & retail | 1997 |
| Peaches Wedding Shop Limited | Wholesale & retail | 2002 |
| Peaclays Limited | Professional & scientific | 2023 |
| Peak Building & Maintenance Ltd | Construction | 2024 |
| Peak Health Ltd | Health & social care | 2023 |
| Peak Heating and Plumbing Ltd | Construction | 2024 |
| Peak View Management Company Limited | Households | 2007 |
| Peakdown Investments Limited | Administrative & support | 1962 |
| Peanut Meta Ltd | Arts & recreation | 2024 |
| Pearl Advisory Limited | Financial services | 2026 |
| Pearl UK Transports Ltd | Transport & logistics | 2020 |
| Pearlescent Holdings Limited | Information & communication | 2018 |
| Pearls Cleaning Ltd | Administrative & support | 2024 |
| PEC International Services Limited | Wholesale & retail | 2024 |
| Pegasus Assets Limited | Real estate | 2011 |
| Peirene Medical Ltd | Health & social care | 2022 |
| Peking Garden Limited | Extraterritorial | 2020 |
| Pemberton Cleaning Ltd | Administrative & support | 2025 |
| Pendleton Court RTM Company Limited | Households | 2017 |
| Pendragon Contracts of Harlow Ltd | Construction | 2014 |
| Pension Review Specialists Ltd | Extraterritorial | 2012 |
| People:Change:Experience Limited | Professional & scientific | 2012 |
| Percy Bryant Road Limited | Households | 2026 |
| Perfect Care Staffing Solution Ltd | Administrative & support | 2025 |
| Perfect Property Expert Ltd | Real estate | 2022 |
| PERFECTGIFT4U Limited | Wholesale & retail | 2011 |
| Perfectly Cleaning Services Ltd | Administrative & support | 2018 |
| Performance Drive Hire Ltd | Administrative & support | 2021 |
| Performance Edge Consulting Ltd | Professional & scientific | 2010 |