| Progressive Idea Limited | Wholesale & retail | 2024 |
| Progressus Partners Limited | Administrative & support | 2006 |
| Prohealth UK Limited | Administrative & support | 2020 |
| Project Blossom Ltd | Professional & scientific | 2023 |
| Project Fusion Limited | Real estate | 2011 |
| Project Fusion Partnership Limited | Construction | 2016 |
| Project Ladysmith Road Ltd | Real estate | 2020 |
| Project Prop UK Ltd | Real estate | 2018 |
| Project R Ltd | Wholesale & retail | 2024 |
| Project Support Assistant Limited | Administrative & support | 2020 |
| Projonmo Bikrampur UK Limited | Financial services | 2022 |
| Prokreate Limited | Information & communication | 2007 |
| Proland Portfolio Ltd | Administrative & support | 2023 |
| Prolegal Ltd | Professional & scientific | 2025 |
| Prolink Services Limited | Real estate | 2002 |
| Prologic Accountancy Services Ltd | Professional & scientific | 2013 |
| Promax Links Limited | Construction | 2018 |
| Prominent Security Services Limited | Administrative & support | 2023 |
| Promised Consultants Limited | Professional & scientific | 2020 |
| Proovit Labs Limited | Professional & scientific | 2025 |
| Prop Farming Ltd | Financial services | 2025 |
| Prop Ventures Limited | Real estate | 2022 |
| PROP80 Limited | Construction | 2021 |
| Propco 7 Limited | Real estate | 2023 |
| Propel Digital Ltd | Professional & scientific | 2025 |
| Propel Management Services Ltd | Real estate | 2026 |
| Proper Builds Ltd | Construction | 2024 |
| Proper Mods Ltd | Wholesale & retail | 2018 |
| Proper-T Contractors Ltd | Construction | 2024 |
| Propertey Ltd | Real estate | 2024 |
| Properties a Y & U Ltd | Real estate | 2018 |
| Properties DK Ltd | Real estate | 2023 |
| Properties for Letting Limited | Real estate | 2020 |
| Properties of DHA Limited | Real estate | 2023 |
| Property & Law Consultancy Limited | Professional & scientific | 2016 |
| Property ACC. Ltd | Real estate | 2020 |
| Property Advisors Pro Ltd | Real estate | 2019 |
| Property and More Ltd | Real estate | 2022 |
| Property Buy-Rent Ltd | Real estate | 2023 |
| Property Cartel Ltd | Education | 2025 |
| Property Depot Limited | Real estate | 2016 |
| Property GAP Ltd | Real estate | 2021 |
| Property Holdings U.K. Ltd | Real estate | 2021 |
| Property Investments (1982) Ltd | Real estate | 2024 |
| Property Link Ilford Limited | Real estate | 2014 |
| Property Links UK Limited | Real estate | 2008 |
| Property Management Elite Ltd | Real estate | 2025 |
| Property Masterz UK Ltd | Real estate | 2010 |
| Property Msst Limited | Real estate | 2025 |
| Property One Sourcing Ltd | Households | 2018 |
| Property Phase Limited | Real estate | 2020 |
| Property Rental and Management Limited | Real estate | 2011 |
| Property Sale Guru Ltd | Real estate | 2021 |
| Property Set-Up Ltd | Real estate | 2019 |
| Property Sorters Ltd | Administrative & support | 2025 |
| Property Spot UK Ltd | Real estate | 2019 |
| Property Surveying Limited | Professional & scientific | 2024 |
| Property UK Investments Ltd | Real estate | 2023 |
| Propertybar Investment Ltd | Real estate | 2026 |
| Propertybar Ltd | Real estate | 2024 |
| Propertycoe Limited | Construction | 2015 |
| Propertyspot Services Ltd | Real estate | 2020 |
| Propfees Ltd | Information & communication | 2023 |
| Prophecy Tattoo Studio and Art Gallery Limited | Administrative & support | 2017 |
| Propinvco Ltd | Wholesale & retail | 2023 |
| Proposals Ltd | Real estate | 2024 |
| Props Limited | Professional & scientific | 2016 |
| Proptek Holding Ltd | Financial services | 2023 |
| Proptimium Limited | Real estate | 2024 |
| Proptix Kenton Limited | Real estate | 2021 |
| Propton Limited | Real estate | 2016 |
| Propulsivecrafts Ltd | Professional & scientific | 2024 |
| Propzone Ltd | Other services | 2018 |
| Proride Coach Hire Ltd | Transport & logistics | 2023 |
| Proscale Accountants Limited | Professional & scientific | 2025 |
| Proshield Security Limited | Administrative & support | 2023 |
| Prosmart Autospa Ltd | Wholesale & retail | 2023 |
| Prosperase Limited | Administrative & support | 2025 |
| Prosperion Limited | Real estate | 2024 |
| Prosperity Group Global Ltd. | Financial services | 2025 |
| Prosperity Minds Limited | Professional & scientific | 2017 |
| Prosperous Jade Feast Limited | Hospitality | 2025 |
| Prospire Estates Ltd | Real estate | 2024 |
| Prospr Ltd | Information & communication | 2016 |
| Protag Mgmt Ltd | Professional & scientific | 2025 |
| Protec Security and Management Services Ltd | Administrative & support | 2023 |
| Protech Alarms Limited | Administrative & support | 1986 |
| Protech SG Ltd | Wholesale & retail | 2024 |
| Protech Team LSP Ltd | Administrative & support | 2020 |
| Protect Windows Ltd | Construction | 2023 |
| Protection Patrol Security Ltd | Administrative & support | 2025 |
| Protections Security Limited | Administrative & support | 2017 |
| Protexis Services Limited | Administrative & support | 2025 |
| Protoweb Ltd | Information & communication | 2024 |
| Protsecf Security Services Ltd | Construction | 2024 |
| Proved Ltd | Wholesale & retail | 2021 |
| Proven Change Solutions Ltd | Professional & scientific | 2024 |
| Provestors Maintenance Limited | Construction | 2020 |
| Providential Homes Ltd | Real estate | 2021 |
| Provider Pro Ltd | Wholesale & retail | 2022 |