| PHA Construction Ltd | Construction | 2017 |
| Pharmaservicease Ltd | Health & social care | 2024 |
| Phil Solomons Ltd | Wholesale & retail | 2011 |
| Phoenix Ryzing Limited | Professional & scientific | 2004 |
| Physioflex Limited | Professional & scientific | 2001 |
| PI Actuarial & Modelling Solutions Limited | Financial services | 2016 |
| Picacho Consulting Services Limited | Professional & scientific | 2002 |
| Pilgrim Limited | Manufacturing | 1980 |
| Pillay’S Limited | Manufacturing | 2022 |
| Pina Colada Investments Limited | Real estate | 2016 |
| Pina Colada Software Limited | Information & communication | 2015 |
| Pitahaya Corporation & Consultancy Ltd | Wholesale & retail | 2025 |
| Pixeltive Ltd | Information & communication | 2019 |
| PJ & MM Holmes Ltd | Real estate | 2024 |
| Plabable Limited | Education | 2017 |
| Planbee Resources Ltd | Education | 2012 |
| Planet Sweet Limited | Hospitality | 2009 |
| Planlodge Limited | Hospitality | 2000 |
| Platelayers Ltd | Construction | 2007 |
| Platinum Concierge Services Limited | Other services | 2005 |
| PM Services (Data) Ltd | Information & communication | 2023 |
| Pmactive Community Interest Company | Education | 2025 |
| Pmprinted Limited | Manufacturing | 2021 |
| POG Power Services Limited | Professional & scientific | 2024 |
| Polar Heating & Cooling Ltd | Construction | 2024 |
| Portunus Investment Solutions Limited | Financial services | 2009 |
| Postcode Networking Ltd | Administrative & support | 2022 |
| Power 365 EV Ltd | Energy | 2021 |
| Power 365 Tech Ltd | Energy | 2021 |
| Power Agent Limited | Professional & scientific | 2020 |
| PPV Consultancy Ltd | Information & communication | 2007 |
| Pragmatic Consultancy Limited | Professional & scientific | 2020 |
| Precision Tile, Marble & Repair Limited | Construction | 2025 |
| Premier Consulting Svcs Ltd | Professional & scientific | 2012 |
| Premier Pools Limited | Other services | 2016 |
| Premier Rides Limited | Administrative & support | 2009 |
| Prestige Profits Limited | Wholesale & retail | 2024 |
| Prestige Prospects Limited | Professional & scientific | 2024 |
| Primary Heating and Plumbing Ltd | Construction | 2018 |
| Primary Renewables & Mechanical Ltd | Construction | 2021 |
| Prime Care Healthcare Services Ltd. | Administrative & support | 2025 |
| Primebus Ltd | Transport & logistics | 2022 |
| Primepath International Education Ltd | Education | 2026 |
| Primrose Health Global Limited | Manufacturing | 2011 |
| Priory Offices Limited | Real estate | 2025 |
| Pro Nails Design Limited | Other services | 2023 |
| Pro Welfare Limited | Health & social care | 2012 |
| Pro-Fix CP Limited | Wholesale & retail | 2010 |
| Proarcti Limited | Professional & scientific | 2014 |
| Prodhks Ltd | Wholesale & retail | 2013 |
| Progressive Ventilation Limited | Wholesale & retail | 2013 |
| Project Cost Control Limited | Professional & scientific | 2024 |
| Property 26 Limited | Real estate | 2007 |
| Property Bespoke Ltd | Construction | 2019 |
| Property Issues Ltd | Real estate | 2020 |
| PROPERTY-4-U Limited | Construction | 2000 |
| Protegem Limited | Manufacturing | 2003 |
| PSH Group Limited | Hospitality | 2025 |
| PUG Web Design Ltd | Information & communication | 2020 |
| Pugilist Performance Ltd | Education | 2025 |
| Pure Home Environments Limited | Professional & scientific | 2025 |
| Pure Painters Ltd | Construction | 2025 |
| Pure Skin Wellness Limited | Other services | 2019 |
| PVD Services Ltd | Administrative & support | 2023 |
| PYC Intelligent Systems Limited | Construction | 2017 |
| Pyrige Limited | Professional & scientific | 2018 |
| Q Commerce Limited | Wholesale & retail | 2022 |
| Q Connect Ltd | Health & social care | 2021 |
| Qjnursing Ltd | Health & social care | 2021 |
| Qskies Limited | Transport & logistics | 2014 |
| QST International Limited | Wholesale & retail | 2005 |
| Quality Continuous Care Ltd | Administrative & support | 2014 |
| Quality Statutory Inspection Services Ltd | Professional & scientific | 2019 |
| Quantav Limited | Information & communication | 2024 |
| Quantum Executive Consulting Limited | Information & communication | 2025 |
| Quest Graphics Limited | Professional & scientific | 2011 |
| Quickdig Excavation and Surfacing Ltd | Construction | 2017 |
| R M S & Co (UK) Ltd | Professional & scientific | 2015 |
| R R Creative Design Ltd | Professional & scientific | 2022 |
| Raah and Co. Group Ltd | Wholesale & retail | 2025 |
| Racetrack Software Limited | Extraterritorial | 2015 |
| Rachi'Snpservices Limited | Health & social care | 2025 |
| Radlen Bespoke Ltd | Manufacturing | 2025 |
| Railconsult Services Limited | Professional & scientific | 2012 |
| Rangatainment Ltd | Arts & recreation | 2020 |
| Rapscallion Limited | Information & communication | 2007 |
| Rare Drives Ltd | Wholesale & retail | 2024 |
| RAY KAY Designs Ltd | Wholesale & retail | 2020 |
| Raysport International Limited | Manufacturing | 2006 |
| RB Lawn Services Ltd | Administrative & support | 2024 |
| RBC Chauffeurs UK Limited | Transport & logistics | 2023 |
| RD Secretarial Services Ltd | Professional & scientific | 2008 |
| RDY Creative Ltd | Information & communication | 2019 |
| Re-Drive Stabilisation Ltd | Construction | 2015 |
| Reads Roofing Services Limited | Construction | 2025 |
| Ready, Steady, Pilates Ltd | Arts & recreation | 2025 |
| Real Skill Builders Ltd | Construction | 2019 |
| REALESTATE-4-U Limited | Construction | 2000 |
| Reconnect GAS Ltd | Construction | 2026 |
| Red Cell Consultancy Ltd | Information & communication | 2014 |