| Preou Holdings Limited | Financial services | 2024 |
| Prestige Electrical Contracting Limited | Construction | 2019 |
| Prestige Homes Ltd | Real estate | 2025 |
| Prestige Lift Services Limited | Construction | 2016 |
| Prestige Vehicle Sales Limited | Wholesale & retail | 2024 |
| Pretzel 3D Ltd | Wholesale & retail | 2024 |
| PRH Property Holdings Limited | Real estate | 2007 |
| Primary Care Providers Limited | Administrative & support | 2003 |
| Prime AC Supplies Ltd | Wholesale & retail | 2020 |
| Prime Access Services Co UK Limited | Extraterritorial | 2008 |
| Prime Center Ltd | Transport & logistics | 2026 |
| Prime Wellbeing UK Limited | Wholesale & retail | 2023 |
| Principal Property Developments Ltd | Construction | 2023 |
| Principle Care Homes (Chelmsford) Limited | Health & social care | 2020 |
| Principle Care Homes (CM1) Limited | Real estate | 2020 |
| Principle Care Homes (Fleet) Limited | Health & social care | 2020 |
| Principle Care Homes (GU51) Limited | Health & social care | 2019 |
| Principle Care Homes Holdings Limited | Health & social care | 2020 |
| Print Express Essex Ltd | Manufacturing | 2024 |
| Pristine Kleen Ltd | Administrative & support | 2026 |
| Private Label Group Limited | Financial services | 2021 |
| Privo (Longmead) Ltd | Other services | 2025 |
| Privo (the Chase) Limited | Other services | 2024 |
| Privo (the Links) Limited | Other services | 2025 |
| Privo Developments (the Meadows) Limited | Professional & scientific | 2022 |
| Privo Holding Ltd | Financial services | 2024 |
| Privo Land Ltd | Professional & scientific | 2023 |
| Privo Management Limited | Construction | 2020 |
| Pro Choice Compliance Ltd | Professional & scientific | 2022 |
| Pro Clarity Consulting Ltd | Professional & scientific | 2024 |
| Pro Property Holdings Ltd | Financial services | 2024 |
| Pro Salon Academy Ltd | Education | 2025 |
| Pro-Coat (Essex) Limited | Other services | 2023 |
| Pro-Speak Ltd | Education | 2025 |
| Pro-Tect Coatings Ltd | Administrative & support | 2003 |
| Pro-Wheels (Essex) Limited | Wholesale & retail | 2022 |
| PRO4DEVELOPMENTS Ltd | Administrative & support | 2023 |
| Procure | | 2004 |
| Procurexcellence Limited | Wholesale & retail | 2020 |
| Prodigy BIM Ltd | Professional & scientific | 2024 |
| Production Line Maintenance Limited | Construction | 2011 |
| Profit Estates Limited | Real estate | 2017 |
| Progress Building Contractors Limited | Construction | 2012 |
| Progress Plumbing and Heating Services Ltd | Construction | 2025 |
| PROGRESSION4 Services Ltd | Professional & scientific | 2021 |
| Progressive Car Care Ltd | Wholesale & retail | 2020 |
| Projectworks & Policy Consultancy Ltd | Professional & scientific | 2026 |
| Projexa Digital Limited | Information & communication | 2023 |
| Prokol Protective Coatings USA Ltd | Financial services | 2019 |
| Prom & Bridal Boutique Ltd | Wholesale & retail | 2024 |
| Prom & Party Limited | Wholesale & retail | 2020 |
| Prometheus Insights Ltd | Information & communication | 2025 |
| Promethium Analytics Ltd | Information & communication | 2025 |
| Promnparty Ltd | Wholesale & retail | 2013 |
| Property Blok Ltd | Real estate | 2024 |
| Property Rejuvenation Limited | Construction | 2005 |
| Property Services Gillingham Limited | Extraterritorial | 2007 |
| Property Vine Investments Limited | Real estate | 2021 |
| Property.H.Investment Ltd | Real estate | 2025 |
| Propertyserve Building Solutions Ltd | Administrative & support | 1986 |
| Propertyserve Holdings Ltd | Financial services | 2014 |
| Propetual Consulting Ltd | Professional & scientific | 2023 |
| Propetual Ltd | Professional & scientific | 2023 |
| Props 'N' Frocks Limited | Administrative & support | 2008 |
| Prospect Waste Limited | Water & waste | 2025 |
| Prostate Cancer Black MEN Ltd | Information & communication | 2021 |
| Protective Seals Solutions Limited | Wholesale & retail | 2014 |
| Proud Retreats Ltd | Health & social care | 2025 |
| Proudfit Ltd | Arts & recreation | 2021 |
| PRS Capital Limited | Financial services | 2013 |
| Prudence Cleaning Services Limited | Administrative & support | 2013 |
| PS3 Safeguarding Limited | Professional & scientific | 2018 |
| PSG Property Developments Limited | Construction | 2014 |
| PSL Holdco Ltd | Financial services | 2025 |
| PTP Consultant Ltd | Professional & scientific | 2025 |
| Public Notices Limited | Extraterritorial | 2025 |
| Publix Limited | Transport & logistics | 2005 |
| Pullman Direct Ltd | Transport & logistics | 2019 |
| Punchers Plumbing and Heating Ltd | Construction | 2023 |
| Purdy Air Conditioning Ltd | Construction | 2025 |
| Purdy Developments Ltd | Construction | 2025 |
| Purdy Electrical Ltd | Construction | 2025 |
| Pure Basket Ltd | Wholesale & retail | 2025 |
| Pure Blue Consulting Ltd | Professional & scientific | 2014 |
| Pure Security Solutions Ltd | Wholesale & retail | 2022 |
| Purple and Lime Limited | Administrative & support | 2012 |
| Purplescape Limited | Information & communication | 2024 |
| PVD Physio Limited | Health & social care | 2007 |
| PVR Holdings Limited | Administrative & support | 2026 |
| PWR Fitness & Performance Ltd | Arts & recreation | 2019 |
| Pyneappl Limited | Other services | 2021 |
| Q Networkers Ltd | Administrative & support | 2012 |
| Q2I.CO Ltd | Information & communication | 2017 |
| Q4 Electrical Contracts Limited | Manufacturing | 2020 |
| Quad Commercial Solutions Ltd | Construction | 2025 |
| Qualitat Brickwork Limited | Construction | 2000 |
| Quality Clean (Surrey) Ltd | Administrative & support | 2015 |
| Quality Painting Services EOT Limited | Administrative & support | 2023 |
| Quality Painting Services Limited | Construction | 2001 |
| Quantified Associates Ltd | Professional & scientific | 2016 |