| PMD Electricals Ltd | Construction | 2018 |
| Pmwd Limited | Transport & logistics | 2023 |
| Pn&G Property Management Limited | Real estate | 2017 |
| PNAC2HI Limited | Health & social care | 2012 |
| Pointer Property Solutions Ltd | Construction | 2020 |
| POL Properties Ltd | Real estate | 2022 |
| POL Transport Limited | Transport & logistics | 2006 |
| Polanka Xpress Ltd | Wholesale & retail | 2017 |
| Polish Market Lajkonik Ltd | Wholesale & retail | 2014 |
| Polyhose Technology Limited | Professional & scientific | 2001 |
| Polymath & Ltd | Construction | 2025 |
| Pomo Properties Limited | Real estate | 2024 |
| Poplars Nursery Garden Centre Limited | Wholesale & retail | 1998 |
| Poppyseeds Home Limited | Wholesale & retail | 2016 |
| Portland Capital Holdings Limited | Real estate | 2025 |
| Positive Business Pictures Ltd | Transport & logistics | 2016 |
| Potters Mead Private Drive Limited | Households | 2021 |
| Pound 4 Pound Boxing Limited | Other services | 2015 |
| Powcrowd Ltd | Information & communication | 2016 |
| Powering Potential Community Interest Company | Health & social care | 2026 |
| Practical Skill Training Limited | Education | 2019 |
| Practitioner Medical Publishing Limited | Information & communication | 2009 |
| Praesto Management Services Group Ltd | Professional & scientific | 2017 |
| Praetorian Consultancy Ltd | Administrative & support | 2022 |
| Precision Bookkeeping Limited | Professional & scientific | 2009 |
| Precision Marketing Limited | Professional & scientific | 1988 |
| Precisiontech IT Solutions Ltd | Information & communication | 2022 |
| Premier Inn (UK) Limited | Hospitality | 2016 |
| Premier Inn International Development Limited | Hospitality | 2014 |
| Premier Inn Limited | Professional & scientific | 2007 |
| Premier Inn Manchester Trafford Limited | Hospitality | 1999 |
| Premier Inn Ochre Limited | Hospitality | 2012 |
| Premier Inn Westminster Limited | Hospitality | 1986 |
| Premier Shirts Limited | Wholesale & retail | 2022 |
| Premier Tile Company Limited | Construction | 2004 |
| Premier Travel Inn India Limited | Professional & scientific | 2007 |
| Premium Mechanical Services Ltd | Construction | 2024 |
| Presimart Ltd | Real estate | 2026 |
| Press OK Ltd | Information & communication | 2025 |
| Prestige Appointments Holdings Limited | Financial services | 2018 |
| Prestige Appointments Limited | Administrative & support | 2005 |
| Prestige Auto Valeters Limited | Administrative & support | 2022 |
| Prestige Homecare Solutions Ltd | Construction | 2024 |
| Prestige Infinity Ltd | Construction | 2024 |
| Prestige Kiddizone Ltd | Health & social care | 2020 |
| Prestige Promotions Limited | Administrative & support | 1981 |
| Prestige PUB Company Limited | Hospitality | 2014 |
| Prestige Sparkle Cleaning Ltd | Administrative & support | 2026 |
| Prestigious Marketing Services Ltd | Professional & scientific | 2013 |
| Prestocat Ltd | Information & communication | 2018 |
| Prettypolish Limited | Other services | 2014 |
| PRF Investments Limited | Real estate | 2006 |
| PRF Properties Limited | Real estate | 1998 |
| Price Networks Ltd | Information & communication | 2017 |
| Prime Balance CIC | Health & social care | 2024 |
| Prime Bar Services UK Ltd | Hospitality | 2026 |
| Prime Bodywork and Repair Ltd | Wholesale & retail | 2025 |
| Prime Builders and Services Limited | Construction | 2023 |
| Prime Guardline Ltd | Transport & logistics | 2026 |
| Prime Properties Staffordshire Ltd | Real estate | 2021 |
| Prime Rent & Management Limited | Real estate | 2024 |
| Prime Urbanshelf Ltd | Wholesale & retail | 2026 |
| Primecare Support Limited | Health & social care | 1998 |
| Primeclean PCS Ltd | Administrative & support | 2025 |
| Primelone Logistics Limited | Transport & logistics | 2025 |
| Princes Street (Dunstable) Management Limited | Households | 1977 |
| Principals Contract Catering Ltd | Hospitality | 2011 |
| Priolo Transport Limited | Transport & logistics | 2017 |
| Prisservices Ltd | Construction | 2020 |
| Privilege Property Developments Limited | Construction | 2015 |
| Priya-Patel Limited | Professional & scientific | 2019 |
| PRM Engineering Services Limited | Professional & scientific | 2019 |
| Pro Constructing Ltd | Construction | 2019 |
| Pro Electrical Group Ltd | Construction | 2021 |
| Pro Equestrian Supplements Ltd | Wholesale & retail | 2019 |
| Pro Fess Ltd | Administrative & support | 2023 |
| Pro Tax Plus Accountants Luton Ltd | Professional & scientific | 2024 |
| Products 4 Rewards Limited | Wholesale & retail | 2017 |
| Professional Dental Studies Ltd | Health & social care | 2016 |
| Professional Tiling Training Centre Ltd | Education | 2025 |
| Proficient HR Solutions Ltd | Administrative & support | 2016 |
| Profile Cladding & Roofing Limited | Construction | 2013 |
| Profile Roofing Manufacturing and Supplies Limited | Construction | 2023 |
| Profix Partners Ltd | Construction | 2012 |
| Profound Events Limited | Administrative & support | 2021 |
| Profound Health Ltd. | Wholesale & retail | 2012 |
| Profound Nutrition Limited | Professional & scientific | 1992 |
| Progress Business Advisory Limited | Professional & scientific | 2019 |
| Project Borneo Ltd | Arts & recreation | 2009 |
| Project City Rise Builders Limited | Construction | 2021 |
| Project Juno Limited | Other services | 2015 |
| Project Metalcraft Limited | Manufacturing | 2012 |
| Project Studio 5 Ltd | Real estate | 2024 |
| Proline Electrical Group Limited | Construction | 2026 |
| Pronto Properties Ltd | Real estate | 2021 |
| Propedics UK Ltd | Wholesale & retail | 2021 |
| Properties Northampton Ltd | Real estate | 2024 |
| Property & Properties Ltd | Real estate | 2022 |
| Property a+ Ltd | Real estate | 2020 |
| Property for Generations Limited | Construction | 2022 |