| Property Searches Direct Limited | Other services | 2023 |
| Property Seeds Group Ltd | Real estate | 2023 |
| Property Signatures Ltd | Professional & scientific | 2024 |
| Property Synergy (UK) Ltd | Real estate | 2018 |
| Property Triangle Limited | Real estate | 2022 |
| Property Variety Ltd | Hospitality | 2025 |
| Propertybonds Management Ltd | Financial services | 2019 |
| Propertyline Lettings Ltd | Real estate | 2007 |
| Propertyline Residential Sales Limited | Real estate | 2014 |
| Propertyukdc Ltd | Real estate | 2023 |
| Propertyzone 1 Ltd | Real estate | 2022 |
| Propfix Solutions Ltd | Construction | 2026 |
| Propitious Heart Healthcare Limited | Health & social care | 2019 |
| Propofology Ltd | Health & social care | 2026 |
| Proroad Transport Limited | Transport & logistics | 2019 |
| Proseller Hub Ltd | Wholesale & retail | 2025 |
| Prospect Accountancy Limited | Professional & scientific | 2016 |
| Prospect HR Ltd | Professional & scientific | 2008 |
| Prospect U.K. Limited | Hospitality | 2025 |
| Prosper in Property Ltd | Real estate | 2019 |
| Prosperity Financial Limited | Professional & scientific | 2021 |
| Prosperity Health & Life Ltd | Financial services | 2024 |
| Prosure Property Services Limited | Financial services | 2024 |
| Protato Ltd | Agriculture & fishing | 2014 |
| Protec IT Services Limited | Information & communication | 2003 |
| Protech Tint Ltd | Administrative & support | 2020 |
| Protectabin Limited | Extraterritorial | 2014 |
| Protein Labs Protein Ltd | Wholesale & retail | 2025 |
| Protek Corporation Ltd | Construction | 2017 |
| Proteus PM Ltd | Professional & scientific | 2026 |
| Proto One Limited | Real estate | 2023 |
| Protofact Limited | Information & communication | 2014 |
| Protogreen Holding Limited | Financial services | 2024 |
| Proton Properties Ltd | Real estate | 2019 |
| Prototec Software Limited | Information & communication | 1999 |
| Proud Build UK Ltd | Construction | 2019 |
| Provia Foods Ltd | Wholesale & retail | 2026 |
| Provident Property Developments (UK) Ltd | Real estate | 2017 |
| Provio Transport Ltd | Transport & logistics | 2025 |
| Provista Consulting Ltd | Wholesale & retail | 2018 |
| Proxy Health Limited | Health & social care | 2025 |
| Prps Wood Pallet + LLP | | 2025 |
| Prps Wood Pallet Ltd | Administrative & support | 2024 |
| PRS Care Ltd | Health & social care | 2024 |
| PRS Recruitment Group Ltd | Administrative & support | 2022 |
| Prud Limited | Professional & scientific | 2020 |
| Prxject Eden Ltd | Professional & scientific | 2025 |
| Przym Ltd | Professional & scientific | 2024 |
| Przywidz Trans Ltd | Transport & logistics | 2025 |
| PS Commissioning Ltd | Professional & scientific | 2024 |
| PS Lightfit Ltd | Construction | 2023 |
| PS Line Ltd | Wholesale & retail | 2020 |
| PS Seta Limited | Wholesale & retail | 2026 |
| PS Transport 1981 Ltd | Transport & logistics | 2015 |
| PSA Architectural Property Developments Limited | Construction | 2025 |
| Psarld Limited | Professional & scientific | 2015 |
| PSB Property Agents Ltd | Real estate | 2025 |
| PSC Cabling Limited | Construction | 2014 |
| Psmhold Limited | Financial services | 2023 |
| Psmprop Group Limited | Real estate | 2023 |
| Psochaj Trans Ltd | Administrative & support | 2019 |
| PSR Star Ltd | Hospitality | 2024 |
| Pssc Window Films Ltd | Construction | 2003 |
| Pstl Transport Ltd | Transport & logistics | 2018 |
| Psych Pro Academy LLP | | 2025 |
| Psych Pro Solutions Limited | Health & social care | 2017 |
| Psygnosis Industries Limited | Wholesale & retail | 2025 |
| PT Builders Ltd | Construction | 2016 |
| PT Change Management Ltd | Information & communication | 2023 |
| PT Formula Limited | Arts & recreation | 2022 |
| PT Norfolk Ltd | Wholesale & retail | 2025 |
| PT Prime Ltd | Professional & scientific | 2026 |
| Ptasys Co Ltd | Information & communication | 2018 |
| Ptds Investments Ltd | Health & social care | 2018 |
| PTL Lettings Limited | Households | 2019 |
| Ptlk Ltd | Construction | 2026 |
| PTS National Limited | Transport & logistics | 2019 |
| Ptsc (Peterborough) Ltd | Arts & recreation | 2020 |
| PTT Consulting Limited | Professional & scientific | 2024 |
| Public World Limited | Professional & scientific | 2010 |
| Publico Limited | Public administration | 2016 |
| Puddlejump Lane Limited | Arts & recreation | 2023 |
| Puffinhr Limited | Information & communication | 2026 |
| Puffins Healthcare Ltd | Administrative & support | 2018 |
| Puffs Plus Ltd | Wholesale & retail | 2025 |
| Pufftrans Ltd | Transport & logistics | 2025 |
| Pukmar Ltd | Transport & logistics | 2021 |
| Pular Skin Ltd | Manufacturing | 2025 |
| Pulcyn Trans Ltd | Transport & logistics | 2018 |
| Pump Court Management Company Limited | Real estate | 2008 |
| Pump Protocol Ltd | Manufacturing | 2026 |
| Pumpwatch Ltd | Administrative & support | 2025 |
| Punk Properties Ltd | Real estate | 2021 |
| Pure Charge Performance Ltd | Wholesale & retail | 2025 |
| Pure Custom Resin Limited | Construction | 2017 |
| Pure Escape Beauty Limited | Other services | 2017 |
| Pure Fuels North Limited | Professional & scientific | 2017 |
| Pure Genius Ltd | Wholesale & retail | 2016 |
| Pure Hearts Care Services Ltd | Administrative & support | 2022 |
| Pure Life Health Care Limited | Transport & logistics | 2017 |