| Proline Structural Detailing and Services Ltd | Other services | 2021 |
| Proline Trading Limited | Water & waste | 2022 |
| Proline Utilities Ltd | Administrative & support | 2013 |
| Proline Utilities Site Works Limited | Administrative & support | 2022 |
| Prolixus Electrical Ltd | Manufacturing | 2018 |
| Prolove Ltd | Health & social care | 2023 |
| Prom News Limited | Real estate | 2002 |
| Promac Construction Limited | Construction | 2013 |
| Promac Energy Limited | Construction | 2021 |
| Promenade 16 Limited | Construction | 2021 |
| Promenade 17 Limited | Construction | 2021 |
| Promenade 7 Limited | Construction | 2021 |
| Promenade Cowley Hill Limited | Construction | 2019 |
| Promenade Ellesmere Port Limited | Construction | 2018 |
| Promenade Estates Limited | Construction | 2002 |
| Promenade Firswood Limited | Construction | 2018 |
| Promenade Group Limited | Financial services | 2018 |
| Promenade Holdings Limited | Financial services | 2015 |
| Promenade Invest Limited | Financial services | 2021 |
| Promenade Investments Limited | Financial services | 2015 |
| Promenade Land Limited | Construction | 2022 |
| Promenade Office Investments Limited | Real estate | 1998 |
| Promenade Open Spaces Limited | Real estate | 1996 |
| Promenade Restaurants Limited | Real estate | 1996 |
| Prometheus PGS Ltd | Construction | 2026 |
| Prometheus Productions Limited | Information & communication | 2015 |
| Promifa Ltd | Hospitality | 2025 |
| Promised Land Property Consultancy Ltd | Real estate | 2019 |
| Promotional Entertainment Services Ltd | Other services | 2007 |
| Promove Removals Ltd | Transport & logistics | 2026 |
| Promoveo Systems Ltd | Professional & scientific | 2014 |
| Promptman Cargo Ltd | Wholesale & retail | 2026 |
| Pronetix Limited | Information & communication | 2015 |
| Pronto Bold Street Ltd | Hospitality | 2025 |
| Pronto's Burger Ltd | Hospitality | 2024 |
| Proofpathai Limited | Financial services | 2025 |
| Prop Hire Group Ltd | Arts & recreation | 2022 |
| Propel PR Limited | Professional & scientific | 2019 |
| Proper Graft Works Ltd | Construction | 2026 |
| Proper Lettings Ltd | Real estate | 2025 |
| Proper Sets Limited | Construction | 2024 |
| Proper Transport Co Limited | Transport & logistics | 2026 |
| Proper Wood Ltd | Wholesale & retail | 2020 |
| Properties by Anna Ltd | Real estate | 2023 |
| Properties JD Ltd | Real estate | 2024 |
| Properties Line Limited | Real estate | 2022 |
| Properties RB Limited | Real estate | 2017 |
| Properties With Honor Limited | Real estate | 2017 |
| Propertrue Lettings&Service Ltd | Real estate | 2024 |
| Property 14 Limited | Real estate | 2021 |
| Property 17 Ltd | Real estate | 2020 |
| Property 4 Students Limited | Real estate | 2004 |
| Property a & a Ltd | Real estate | 2017 |
| Property Arbitrage Propco Limited | Real estate | 2024 |
| Property Cloud 9 Limited | Real estate | 2011 |
| Property Collateral Limited | Real estate | 2010 |
| Property Company North West Limited | Households | 2017 |
| Property Compliance & Safety Service Ltd | Professional & scientific | 2024 |
| Property Division Limited | Real estate | 2025 |
| Property Expertise Ltd | Households | 2021 |
| Property Group Warrington Limited | Real estate | 2021 |
| Property Growth Partners Ltd | Real estate | 2024 |
| Property Hub (NW) Limited | Real estate | 2018 |
| Property Insurance Initiatives Limited | Financial services | 2012 |
| Property Investment and Consultancy Limited | Real estate | 2018 |
| Property Letting & Development Limited | Real estate | 2015 |
| Property Link Care Limited | Construction | 2020 |
| Property Loans (UK) Ltd | Financial services | 2009 |
| Property Maintenance & Construction Limited | Administrative & support | 2005 |
| Property NW 365 Ltd | Real estate | 2025 |
| Property Panaceaa Ltd | Real estate | 2024 |
| Property Refinement Ltd | Real estate | 2013 |
| Property S&H Ltd | Real estate | 2025 |
| Property Solutions (NW) Ltd | Households | 2011 |
| Property Sourcing Merseyside Ltd | Real estate | 2020 |
| Property Stocker Limited | Real estate | 2024 |
| Property Surv Building Surveying and Design Ltd | Professional & scientific | 2015 |
| Property T&A Ltd | Real estate | 2024 |
| Property, Planning & Regeneration Limited | Administrative & support | 2009 |
| Propertycare Services (North West) Limited | Construction | 1994 |
| Proplan Construction Solutions Ltd | Construction | 2024 |
| Propskan.Com Ltd | Real estate | 2018 |
| Propstar Beta Ltd | Extraterritorial | 2021 |
| Propstar Delta Ltd | Financial services | 2025 |
| Propstar Investments Ltd | Real estate | 2024 |
| Proptri Limited | Households | 2007 |
| Propyno Limited | Information & communication | 2025 |
| Prosmile Development Limited | Real estate | 2019 |
| Prosms Ltd | Information & communication | 2021 |
| Prosource Europe Limited | Professional & scientific | 2004 |
| Prospect (GB) Limited | Administrative & support | 2001 |
| Prospect Expert Compliance Limited | Professional & scientific | 2021 |
| Prospect Expert Consultants Limited | Professional & scientific | 2022 |
| Prospect Expert Holdings Limited | Real estate | 2024 |
| Prospect Housing NW Ltd | Health & social care | 2024 |
| Prospect Law Consultancy Limited | Professional & scientific | 2014 |
| Prospect Legal Limited | Financial services | 2005 |
| Prospect R Builders Ltd | Construction | 2025 |
| Prospect Wealth Investment Ltd | Real estate | 2021 |
| Prospective Media Ltd | Information & communication | 2010 |