| Pro-Trust Properties Limited | Real estate | 2017 |
| Proactive People Management Limited | Education | 2001 |
| Proarc Fabrications Ltd | Manufacturing | 2017 |
| Process and Plant Sales Limited | Wholesale & retail | 1995 |
| Process Control Automation Limited | Manufacturing | 2017 |
| Process Control Holdings Limited | Financial services | 2017 |
| Process Control Installations Limited | Manufacturing | 2017 |
| Process Control Panels Limited | Manufacturing | 2015 |
| Procure on Demand Ltd | Professional & scientific | 2017 |
| Prodata Solutionz Ltd | Wholesale & retail | 2026 |
| Prodelivery Ltd | Transport & logistics | 2026 |
| Prodrive Staffing Ltd | Transport & logistics | 2026 |
| Product Perceptions Limited | Professional & scientific | 1995 |
| Product-Forge-Uk Ltd | Information & communication | 2026 |
| Production Consumables Direct Limited | Manufacturing | 2010 |
| Profab 59 Limited | Other services | 2021 |
| Professional Independent Advisers Limited | Financial services | 1991 |
| Professional Independent Advisors (Wolverhampton) Limited | Professional & scientific | 1987 |
| Professional Sports Finance Ltd | Professional & scientific | 2025 |
| Professional Test Solutions Limited | Professional & scientific | 2019 |
| Profi M Ltd | Administrative & support | 2025 |
| Profile Pipework Systems Limited | Construction | 2003 |
| Profilia Properties Limited | Real estate | 2025 |
| Proformer Ltd | Arts & recreation | 2026 |
| Progress Adult Living Services Limited | Health & social care | 2018 |
| Progress Care Solutions Limited | Professional & scientific | 2009 |
| Progress Children's Services Limited | Health & social care | 2000 |
| Progress Fostering Services Ltd | Health & social care | 2024 |
| Progress Holdings CS Limited | Health & social care | 2017 |
| Project Cleaning Limited | Administrative & support | 2013 |
| Project Controller Limited | Information & communication | 2008 |
| Project Lamp (Midco) Limited | Professional & scientific | 2018 |
| Project Lamp (Topco) Limited | Professional & scientific | 2018 |
| Project RENOV8 Limited | Construction | 2020 |
| Project Wataha Ltd | Agriculture & fishing | 2023 |
| Project Wellness and Reformer Ltd | Other services | 2025 |
| PROJECT55(UK) Community Interest Company | Education | 2024 |
| Projects DG Ltd | Construction | 2018 |
| Prolifetech Limited | Information & communication | 2023 |
| Prolifiben Ltd | Information & communication | 2026 |
| Prolific Engineering Solutions Ltd | Professional & scientific | 2013 |
| Promaster Ltd | Construction | 2021 |
| Promax Midlands Ltd | Hospitality | 2025 |
| Promephius Ltd | Wholesale & retail | 2019 |
| Promise Solutions Limited | Financial services | 2003 |
| Pronto Group Limited | Construction | 2020 |
| Prop on the HOP Ltd | Information & communication | 2025 |
| Prop-Pocket Ltd | Information & communication | 2026 |
| Propecon Ltd | Real estate | 2022 |
| Propel Homes Ltd | Wholesale & retail | 2024 |
| Proper Homes Ltd. | Construction | 2016 |
| Proper-T Improvements Ltd | Construction | 2022 |
| Properties by Jackie Ltd | Real estate | 2025 |
| PROPERTIES2LETUK Ltd | Real estate | 2024 |
| Property 2DAY Limited | Real estate | 2020 |
| Property 62 Consulting Limited | Administrative & support | 2021 |
| Property 62 Developments Limited | Real estate | 2021 |
| Property 62 Group Limited | Real estate | 2019 |
| Property Agents Circle Limited | Administrative & support | 2009 |
| Property by Stack Ltd | Real estate | 2025 |
| Property Databank Ltd | Information & communication | 2025 |
| Property First (Dosanjh) Ltd | Real estate | 2016 |
| Property Investors App Limited | Real estate | 2018 |
| Property Joy Ltd | Real estate | 2022 |
| Property Letting Birmingham Ltd | Real estate | 2018 |
| Property Protection Limited | Professional & scientific | 2024 |
| Property Solutions & Resolutions Limited | Administrative & support | 2024 |
| PROPERTY2GO Limited | Real estate | 2020 |
| Propertybyjag Ltd | Real estate | 2022 |
| Proplas Machinery Ltd | Administrative & support | 2012 |
| Proprint (Birmingham) Limited | Manufacturing | 2011 |
| Propshop Technologies Limited | Professional & scientific | 2018 |
| Propvine Ltd | Real estate | 2024 |
| Prospect Tree Health Care (Midlands) Limited | Health & social care | 2010 |
| Prosper Care Solutions Limited | Health & social care | 2022 |
| Prosper Fasteners and Fixings Limited | Wholesale & retail | 2004 |
| Prosper Recruitment Solutions Limited | Other services | 2022 |
| Prosperity Payroll Limited | Other services | 2019 |
| Prostho Limited | Health & social care | 2010 |
| Protech Coatings Ltd | Manufacturing | 2009 |
| Protect and Serve Home Security Limited | Administrative & support | 2020 |
| Protect Installations Ltd | Construction | 2021 |
| Protein Package Limited | Wholesale & retail | 2017 |
| Protex Services Ltd | Administrative & support | 2025 |
| Proton Developments Limited | Agriculture & fishing | 1995 |
| Proud Care Homes Ltd | Health & social care | 2023 |
| Proud Property Solutions Ltd | Real estate | 2025 |
| Provectus Contracting Ltd | Extraterritorial | 2019 |
| Provectus Group Ltd | Extraterritorial | 1991 |
| Provectus Remediation Ltd | Water & waste | 2002 |
| Provectus Soils Management Ltd | Water & waste | 2019 |
| Provectus Trustee Ltd | Financial services | 2023 |
| Providers First Consultancy Services Limited | Professional & scientific | 2013 |
| Provista Entertainment 2019 Limited | Arts & recreation | 2019 |
| Proxima Technology Services Ltd | Information & communication | 2026 |
| PRS Payroll Services Ltd | Administrative & support | 2022 |
| Prv...Positive Rising Vibrations Ltd | Professional & scientific | 2024 |
| Prymepeak Limited | Wholesale & retail | 2025 |
| PS Assets Limited | Real estate | 2024 |
| PS Home Improvement Limited | Other services | 2018 |