| Prakiyana Consultancy Limited | Information & communication | 2025 |
| Pramukh Travel Limited | Transport & logistics | 2015 |
| Pranav Global Ventures Limited | Construction | 2023 |
| Pranav Limited | Health & social care | 2019 |
| Pranav Professional Consultants Ltd | Health & social care | 2022 |
| Prasham UK Ltd | Real estate | 2023 |
| Prashastha Ltd | Health & social care | 2026 |
| Prata International Limited | Wholesale & retail | 2021 |
| Pratiganak Ltd | Professional & scientific | 2025 |
| Pravaha Consulting Ltd | Professional & scientific | 2025 |
| PRD Property Investments Limited | Real estate | 2016 |
| Precious London Limited | Wholesale & retail | 2016 |
| Precise Supply Ltd | Wholesale & retail | 2021 |
| Precision & General Engravers Limited | Manufacturing | 1981 |
| Precision Edge Consulting Ltd | Professional & scientific | 2026 |
| Precision Hair Salon Ltd | Other services | 2020 |
| Precision Pulse Auto Ltd | Wholesale & retail | 2024 |
| Preconstruction and BID Services Limited | Professional & scientific | 2022 |
| Predictive Search Partners Ltd | Administrative & support | 2020 |
| Preets Investments Ltd | Real estate | 2020 |
| Pregio Pharma LP | | 2025 |
| Preloved by A.C. Ltd | Wholesale & retail | 2026 |
| Preludes Management Ltd | Households | 2021 |
| Prema Property Management Ltd | Real estate | 2025 |
| Prema Service Ltd | Administrative & support | 2024 |
| Premavera Consultancy Ltd | Professional & scientific | 2023 |
| Premier Carpet Cleaning Limited | Financial services | 2023 |
| Premier Catering Equipment Limited | Wholesale & retail | 2002 |
| Premier Early Years Training LLP | | 2020 |
| Premier Homes Limited | Real estate | 1996 |
| Premier Hospitality Solutions Limited | Administrative & support | 2008 |
| Premier Place Management Company Limited | Real estate | 2003 |
| Premier Property Invest Ltd. | Other services | 2013 |
| Premier Telecommunications International Limited | Professional & scientific | 1962 |
| Premium Impex LLP | | 2013 |
| Premium London Limited | Wholesale & retail | 2017 |
| Premium Taste Ltd | Hospitality | 2023 |
| Prerana Consultancy Limited | Information & communication | 2015 |
| Present Enterprise Limited | Professional & scientific | 2023 |
| Present Mind Wellness Pathways C.I.C. | Other services | 2018 |
| Presho Solutions Ltd | Information & communication | 2017 |
| Presia Homes Limited | Real estate | 2025 |
| Prestige 4X4 Vehicle Hire Ltd | Administrative & support | 2025 |
| Prestige Damp Proofing Solutions Ltd | Construction | 2019 |
| Prestige Exports (London) Limited | Wholesale & retail | 2012 |
| Prestige Leisure Holdings Ltd | Financial services | 2021 |
| Prestige Motorhaus Ltd | Wholesale & retail | 2026 |
| Prestige Property Rentals Ltd | Real estate | 2021 |
| Prestige Removals Services Ltd | Construction | 2024 |
| Prestige Reserve Ltd | Wholesale & retail | 2025 |
| Prestigepoint Services Ltd | Administrative & support | 2026 |
| Prestwick Lane Limited | Information & communication | 2022 |
| Prestwood Flats Limited | Households | 1973 |
| Prestwood Freeholds Limited | Households | 2001 |
| Pretorian Services Ltd | Administrative & support | 2022 |
| Pretorian Shield Ltd | Administrative & support | 2026 |
| Pretty Dead Pictures Ltd | Information & communication | 2016 |
| Preview Baby Ltd | Health & social care | 2016 |
| Prexe Ltd | Wholesale & retail | 2017 |
| Priaulx Property Portfolio Ltd | Real estate | 2014 |
| Pride Consultancy Limited | Professional & scientific | 2004 |
| Pridewell Properties (London) Ltd | Real estate | 2014 |
| Pridewell Properties Limited | Real estate | 2004 |
| Prilux Ltd | Construction | 2026 |
| Prima Private Limited | Manufacturing | 2023 |
| Primary Preparation Limited | Education | 2022 |
| Prime Air AC Ltd | Energy | 2007 |
| Prime Distro Ltd | Wholesale & retail | 2023 |
| Prime Electrical Distribution Ltd | Wholesale & retail | 2019 |
| Prime Handyman & Building Ltd | Construction | 2026 |
| Prime Labs Holding Ltd | Financial services | 2025 |
| Prime Labs Ltd | Professional & scientific | 2019 |
| Prime Living Dreamz Limited | Real estate | 2026 |
| Prime Made Property Maintenance Ltd | Households | 2024 |
| Prime Medical Consulting Limited | Health & social care | 2015 |
| Prime Medical Resource Ltd | Financial services | 2019 |
| Prime Mini Food Mart Ltd | Wholesale & retail | 2018 |
| Prime Pet Hub Ltd | Wholesale & retail | 2024 |
| Prime Pizza & Grill Watford Ltd | Hospitality | 2024 |
| Prime Premises Ltd | Construction | 2023 |
| Prime Property Management (UK) Ltd | Real estate | 2000 |
| Prime RIG Contractors Ltd | Construction | 2023 |
| Prime Wear Solutions Ltd | Wholesale & retail | 2025 |
| Primeedge Holdings UK Ltd | Real estate | 2025 |
| Primehold Property Ltd | Construction | 2026 |
| Primeride CAB Services Ltd | Transport & logistics | 2024 |
| Primetech IT Leasing Limited | Administrative & support | 2025 |
| Primhill Computers Limited | Information & communication | 2005 |
| Primrose Construction (London) Ltd | Construction | 2023 |
| Primrose Projects (London) Limited | Construction | 2019 |
| Primus Locus Limited | Hospitality | 2026 |
| Princeacre Limited | Real estate | 1981 |
| Principio 2011 Limited | Professional & scientific | 2011 |
| Pringle Limited | Professional & scientific | 1997 |
| Prinhold 10 Limited | Real estate | 2018 |
| Prinhold 12 Limited | Real estate | 2021 |
| Prinhold 14 Limited | Real estate | 2023 |
| Prinhold 15 Limited | Real estate | 2024 |
| Prinhold 2 LLP | | 2011 |
| Prinhold 4 LLP | | 2012 |