| Peter Riley Ltd | Transport & logistics | 2016 |
| Petrajokey Ltd | Health & social care | 2012 |
| Petya's Food Ltd | Administrative & support | 2020 |
| PG Yordanova Ltd | Health & social care | 2025 |
| PGB Lifts Ltd | Manufacturing | 2011 |
| PGM Logistics Ltd | Transport & logistics | 2021 |
| Phakamile PK Ltd | Professional & scientific | 2025 |
| Pharmazone Limited | Wholesale & retail | 2010 |
| Phdk Containers Moving Ltd | Transport & logistics | 2021 |
| Phenomenal Music Group Limited | Arts & recreation | 2019 |
| Phi-Ns Tech Ltd | Information & communication | 2026 |
| Phil Summerfield Haulage Service Ltd | Transport & logistics | 2020 |
| Philblez Healthcare Recruitment Ltd | Health & social care | 2023 |
| Phillips Maintenance & Plumbing Ltd | Construction | 2025 |
| Philo London Ltd | Administrative & support | 2020 |
| Phlebotomy Healthcare Ltd | Health & social care | 2024 |
| PHM Corp Ltd. | Wholesale & retail | 2025 |
| Phoenix Property Maintenance Services Ltd | Administrative & support | 2010 |
| Pick N FIX Property Maintenance Ltd | Manufacturing | 2022 |
| PIE Rock Event Planning Services Ltd | Other services | 2022 |
| Pienar Ltd. | Wholesale & retail | 2022 |
| PIK Piotr Kowal Ltd | Transport & logistics | 2019 |
| Pillar & Bloom Limited | Professional & scientific | 2026 |
| Pillsure Limited | Information & communication | 2017 |
| Piloncea Ltd | Construction | 2016 |
| Pinewoods Management Company Limited | Real estate | 2016 |
| Pink Flower Trading Limited | Hospitality | 2019 |
| Pink Splash Projects Ltd | Information & communication | 2025 |
| Pinnacle Commerce Ltd | Professional & scientific | 2013 |
| Pinnacle Labs Group Ltd | Wholesale & retail | 2022 |
| Pinpoint Continuity Limited | Information & communication | 2014 |
| Pioneer Care Group Ltd | Health & social care | 2023 |
| Pioneer Furniture UK Ltd | Wholesale & retail | 2017 |
| Piotr Kuna Ltd | Transport & logistics | 2022 |
| PIT Stop 1 Limited | | 2009 |
| PIT Stop UK Motorbikes Ltd | Wholesale & retail | 2025 |
| Pj's Supported Properties Ltd | Real estate | 2024 |
| PJM Inspection Services Limited | Mining & quarrying | 2014 |
| PJP Consultancy Ltd | Professional & scientific | 2022 |
| PK Majestic Transport Ltd | Transport & logistics | 2023 |
| PKA Rail Solutions Ltd | Construction | 2016 |
| PKM Contractors Limited | Professional & scientific | 2017 |
| Pkore Ltd | Construction | 2023 |
| PKW Flooring Limited | Construction | 2011 |
| Placebo Drinks Ltd | Construction | 2014 |
| Plan a Construction Ltd | Construction | 2009 |
| Plant Fusion Group Ltd | Administrative & support | 2024 |
| Platinum Installations & Maintenance Ltd | Construction | 2022 |
| Playgroundvr Limited | Public administration | 2024 |
| Plenitude Property Group LLP | | 2025 |
| Plexos Ltd | Information & communication | 2008 |
| Plleshi Limited | Transport & logistics | 2025 |
| PLM Property Maintenance Ltd | Households | 2019 |
| PLOESTEANU888 Ltd | Administrative & support | 2023 |
| Plumb & FIX Ltd | Construction | 2018 |
| Plush Stays Ltd | Real estate | 2025 |
| PM Investment Properties Ltd | Real estate | 2024 |
| PMU Mastery Ltd | Other services | 2021 |
| Pohl Morris Limited | Real estate | 2003 |
| Point Financial Solutions Limited | Professional & scientific | 2015 |
| Polar Crunchies Ltd | Manufacturing | 2025 |
| Polar Lifts & Escalators Ltd | Professional & scientific | 2017 |
| Politis Ltd | Professional & scientific | 2021 |
| Pomeque Limited | Manufacturing | 2020 |
| Pooja V Consulting Limited | Professional & scientific | 2016 |
| Popa Trans Ltd | Transport & logistics | 2024 |
| Popcat Ltd | Construction | 2021 |
| Poppyline Properties Limited | Real estate | 2024 |
| Popsor Transport Ltd | Transport & logistics | 2019 |
| Posfem Consults Limited | Information & communication | 2016 |
| Pots of Petals Limited | Wholesale & retail | 2006 |
| Pound City (Grays) Limited | Wholesale & retail | 2010 |
| Pound Stars Retail Limited | Wholesale & retail | 2018 |
| Poundstar Limited | Transport & logistics | 2022 |
| Powerplay Music ENT Ltd | Information & communication | 2019 |
| PPB Services (Fire Protection) Limited | Construction | 2008 |
| PPG NO 1 Ltd | Hospitality | 2015 |
| PPG NO2 Ltd | Hospitality | 2016 |
| PQ Contact Ltd | Administrative & support | 2019 |
| PR Construction Ltd | Construction | 2018 |
| Prabh JI Prime Construction Limited | Construction | 2026 |
| Praedium Crest Ltd | Real estate | 2023 |
| Praise Care Intervention Limited | Health & social care | 2016 |
| Prajapati Builders Ltd | Construction | 2026 |
| Pravalie Store Ltd | Wholesale & retail | 2019 |
| Praveen Patel Limited | Health & social care | 2013 |
| Precise Enterprise Ltd | Construction | 2016 |
| Precision by A&M Ltd | Construction | 2024 |
| Precision Colonial Limited | Construction | 2014 |
| Precision Sealants Limited | Extraterritorial | 2020 |
| Preet Corporation Ltd | Construction | 2019 |
| Premier BS Ltd | Construction | 2024 |
| Premier Contracting (Southern) Ltd | Construction | 2013 |
| Premier Electrical (Southern) Ltd | Construction | 2007 |
| Premier Estates and Management Limited | Construction | 2020 |
| Premier Fire (Southern) Ltd | Other services | 2022 |
| Premier GR Limited | Real estate | 2023 |
| Premier Insulations Limited | Construction | 1946 |
| Premier Recruitment Hub Ltd | Administrative & support | 2024 |
| Premier Windscreens SX Ltd | Wholesale & retail | 2018 |