| Power Grid Arabia Ltd | Wholesale & retail | 2026 |
| Power Grit Ltd | Manufacturing | 2026 |
| Power on Connections Ltd | Construction | 2003 |
| Power on Investments Limited | Financial services | 2008 |
| Power Revolution Event Services Ltd | Construction | 2016 |
| Power UP Solar Ltd | Construction | 2025 |
| Powerflow Limited | Wholesale & retail | 1999 |
| Powertech Onsite Machining Ltd | Manufacturing | 2015 |
| Powerveritas Ltd | Professional & scientific | 2025 |
| PP Electric Services Limited | Construction | 2002 |
| PPF Consultancy Ltd | Professional & scientific | 2019 |
| Praecedo Coaching Ltd | Administrative & support | 2026 |
| Praesidium Risks Group Ltd | Administrative & support | 2026 |
| Praesidium-Uk Ltd | Manufacturing | 2025 |
| Praevalidus Group Limited | Extraterritorial | 2021 |
| Praeventionis Ltd | Professional & scientific | 2023 |
| Pragmatic Perfectionist Consultancy Ltd | Professional & scientific | 2014 |
| Prassinos Holdings Ltd | Financial services | 2018 |
| Praxis Hospitality Ltd | Professional & scientific | 2014 |
| Praxis Knots Ltd | Health & social care | 2015 |
| Praxis Leadership Consultancy Ltd | Professional & scientific | 2025 |
| Praxtier Ltd | Wholesale & retail | 2026 |
| Preatine Limited | Manufacturing | 2026 |
| Precisio Data Solutions Limited | Information & communication | 2004 |
| Precision Drafting Services Limited | Professional & scientific | 1995 |
| Precision Gear Works Ltd | Manufacturing | 2025 |
| Precision Medicine Diagnostics Consultancy Ltd | Professional & scientific | 2023 |
| Precision Resin Bound Ltd | Administrative & support | 2026 |
| Precision Spray Solutions Ltd | Agriculture & fishing | 2025 |
| Precisionagri Drones Ltd | Agriculture & fishing | 2024 |
| Preco Group Ltd | Wholesale & retail | 2026 |
| Precore Limited | Other services | 2005 |
| Preloved-Things Ltd | Wholesale & retail | 2024 |
| Premier Advisory Group Limited | Professional & scientific | 2015 |
| Premier Bodyworks (Holdings) Limited | Wholesale & retail | 2018 |
| Premier CRU Properties Limited | Real estate | 2020 |
| Premier Motorsport Ltd | Professional & scientific | 2021 |
| Premier Print & Design Services Limited | Manufacturing | 1987 |
| Premier Reliance Limited | Real estate | 2013 |
| Premier Trans Ltd | Transport & logistics | 2019 |
| Premium Parking Manchester Limited | Transport & logistics | 2024 |
| Premium Residential Services Ltd | Real estate | 2025 |
| Prep & Prosper Ltd | Hospitality | 2025 |
| Prep and Prosper Education Ltd | Education | 2026 |
| Prepflora Ltd | Wholesale & retail | 2026 |
| Press Start Ltd. | Information & communication | 1996 |
| Prestige Beauty Group Ltd | Manufacturing | 2026 |
| Prestige Castings Ltd | Manufacturing | 2025 |
| Prestige Creations Limited | Wholesale & retail | 2019 |
| Prestige Hospitality Recruitment Ltd | Administrative & support | 2026 |
| Prestige Interior Fitouts Ltd | Construction | 2023 |
| Prestige Paving & Building Ltd | Construction | 2026 |
| Prestige Peptides Ltd | Professional & scientific | 2026 |
| Prestige Renovations Services Limited | Construction | 2025 |
| Prestige Store Direct Ltd | Wholesale & retail | 2020 |
| Prestkey Limited | Other services | 2025 |
| Preta Carbon Ltd. | Manufacturing | 2023 |
| Prez Goodman Limited | Real estate | 2026 |
| Pride of Rushmoor Community Awards CIC | Administrative & support | 2025 |
| Prim & Posie Aesthetics Ltd | Other services | 2025 |
| Primal Alchemy Ltd | Manufacturing | 2016 |
| Primalbox Ltd | Wholesale & retail | 2026 |
| Primary Commercial Investments (UK) Limited | Real estate | 2004 |
| Primary Path Consulting Limited | Information & communication | 2025 |
| Primavera Studios Ltd | Information & communication | 2026 |
| Primaville Limited | Real estate | 2025 |
| Primavista Bath Ltd | Hospitality | 2026 |
| Primavista Restaurants Ltd | Hospitality | 2025 |
| Prime Accountancy Solutions Limited | Professional & scientific | 2009 |
| Prime Group SAC Ltd | Professional & scientific | 2026 |
| Prime Motor Trade Ltd | Wholesale & retail | 2025 |
| Prime Motors MK Ltd | Wholesale & retail | 2025 |
| Prime Space Living Ltd | Construction | 2026 |
| Prime Strategy Group Ltd | Administrative & support | 2024 |
| Primeaxis Financial Limited | Professional & scientific | 2023 |
| Primedax Logistics Limited | Construction | 2025 |
| Primefx Global Ltd | Information & communication | 2025 |
| Primeledger Accountancy Ltd | Professional & scientific | 2026 |
| Primeport Traders Ltd | Wholesale & retail | 2025 |
| Primepower Ltd | Wholesale & retail | 2020 |
| Primetimestudio Ltd | Wholesale & retail | 2026 |
| Primich Global Ltd | Manufacturing | 2025 |
| Primitive Industries Ltd | Information & communication | 2019 |
| Primperdie Limited | Real estate | 2014 |
| Primus Search Ltd | Administrative & support | 2026 |
| Princeps Dance Company Limited | Arts & recreation | 2016 |
| Principia Technica Limited | Professional & scientific | 2016 |
| Principle Enterprise Ltd | Wholesale & retail | 2022 |
| Print Run Promotions Limited | Professional & scientific | 2014 |
| Printcreative Ltd | Manufacturing | 2023 |
| Printpack Solutions Ltd | Wholesale & retail | 2024 |
| Printscribe Media Ltd | Manufacturing | 2024 |
| Priory Convenience Store Ltd | Wholesale & retail | 2024 |
| Priory Property Investments Limited | Real estate | 2019 |
| Priscam Limited | Extraterritorial | 2017 |
| Prism Palace Ltd | Information & communication | 2022 |
| Prism Training Labs Ltd | Information & communication | 2026 |
| Prism Ventures Group UK Ltd | Financial services | 2026 |
| Prismnexa Ltd | Information & communication | 2026 |
| Prismpay UK Limited | Wholesale & retail | 2025 |