| Prestcold(Southern)Limited | | 1952 |
| Prestige Apartment Services Limited | Real estate | 2001 |
| Prestige Homecare Services Limited | Health & social care | 2016 |
| Prestige Motors UK Sales Ltd | Wholesale & retail | 2024 |
| Prian Opulence Ltd | Wholesale & retail | 2024 |
| Prime Capital Management Ltd | Wholesale & retail | 2022 |
| Prime Crest Maintenance Ltd | Construction | 2025 |
| Prime Deals Hub Ltd | Wholesale & retail | 2024 |
| Prime Direct Capital Ltd | Wholesale & retail | 2022 |
| Prime Estate Developments Ltd | Construction | 2024 |
| Prime Frame London Ltd | Construction | 2026 |
| Prime Point Financials Ltd | Professional & scientific | 2025 |
| Prime Properties Capital Ltd | Real estate | 2026 |
| Prime Renovation & Build Ltd | Construction | 2020 |
| Prime Ship Direct Limited | Wholesale & retail | 2023 |
| Prime View Lettings Limited | Real estate | 2025 |
| Primecon Projects Ltd | Construction | 2026 |
| Primefit Construction Ltd | Construction | 2026 |
| Primeguard VIP Chauffeur Ltd | Transport & logistics | 2026 |
| Primeliving Realty Limited | Real estate | 2025 |
| Primemanik Ltd | Wholesale & retail | 2025 |
| Primevest Capital Limited | Real estate | 2024 |
| Prinja Advisory Limited | Professional & scientific | 2025 |
| Printing Comapny Ltd | Manufacturing | 2025 |
| Prism Envyx Ltd | Wholesale & retail | 2026 |
| Prism Pioneer Ltd | Professional & scientific | 2025 |
| Pristine Roofing & Leading Ltd | Construction | 2025 |
| Pristine Roofing Ltd | Construction | 2021 |
| Private Clinic Ltd | Health & social care | 2022 |
| Private UK Property Limited | Real estate | 2020 |
| Priviledged Incorporated Ltd | Professional & scientific | 2025 |
| Pro - EYE Security Limited | Administrative & support | 2005 |
| Pro Artificial Grass Ltd | Administrative & support | 2020 |
| Pro Leaders UK Ltd | Professional & scientific | 2022 |
| Pro Metal Enginering Ltd | Construction | 2019 |
| Pro RO Trading Ltd | Administrative & support | 2019 |
| Pro Shade Ltd | Construction | 2015 |
| Process Simulation and Operator Training Consulting Limited | Education | 2013 |
| PRODUCTS4U Ltd | Wholesale & retail | 2013 |
| Professional IT Management Ltd | Information & communication | 2011 |
| Professional Leaders UK Limited | Professional & scientific | 2011 |
| Profitax Accountants (UK) Ltd | Professional & scientific | 2008 |
| Progasman Ltd | Construction | 2023 |
| Project Gems 100 Ltd | Manufacturing | 2024 |
| Project Pamper Ltd | Education | 2025 |
| Project Solutions 4 U Limited | Administrative & support | 2016 |
| Projectx Competitions Ltd | Wholesale & retail | 2025 |
| Projektify Limited | Information & communication | 2026 |
| Prolearn Academy Ltd | Education | 2025 |
| Prolific Glaze Ltd | Construction | 2018 |
| Property 321 Ltd | Real estate | 2018 |
| Property Worth Ltd | Real estate | 2020 |
| Propmain Construction Limited | Construction | 2024 |
| Protech AV Ltd | Information & communication | 2024 |
| Proton Sprint Technology Ltd | Wholesale & retail | 2026 |
| PRP Property Services Limited | Construction | 2009 |
| Prunella (Tenterden) Limited | Real estate | 1964 |
| Prxt Ltd | Information & communication | 2019 |
| Public Health Initiative UN Ltd | Health & social care | 2015 |
| Pumponomics Limited | Information & communication | 2017 |
| Punjab Construction Team Limited | Construction | 2025 |
| Punjabi Spicy Tadka Ltd | Hospitality | 2023 |
| Pure Amor Ltd | Administrative & support | 2023 |
| Pure Cotton Textiles Ltd | Wholesale & retail | 2025 |
| Pure Foods of London Ltd | Hospitality | 2001 |
| Pure in the Park Ltd | Hospitality | 2025 |
| Pure Raven Construction Ltd | Construction | 2017 |
| Puretrade Ltd | Wholesale & retail | 2025 |
| Purrfect Pixel Ltd | Professional & scientific | 2025 |
| Puspanathan Limited | Real estate | 2025 |
| PYP Estates Ltd | Real estate | 2023 |
| Pyramid Engineering Ltd | Construction | 2016 |
| PZ Plastering Ltd | Construction | 2016 |
| Pzpc Construction Limited | Construction | 2023 |
| QAZ Motor Sports Ltd | Wholesale & retail | 2024 |
| Qazi Commerce Ltd | Wholesale & retail | 2026 |
| Qualifyvisa Limited | Education | 2025 |
| Quality Care & Recruitment Solutions Limited | Health & social care | 2016 |
| Quality Care London Limited | Health & social care | 2011 |
| Quality Furniture Ltd | Manufacturing | 2023 |
| Quality Medical Secretarial Services Limited | Administrative & support | 2020 |
| Quantum ERP Limited | Information & communication | 2020 |
| Quatra UK Ltd | Manufacturing | 2020 |
| Qubitcrypt Ltd | Information & communication | 2020 |
| Queen Anne Street Practice Limited | Extraterritorial | 2012 |
| Queendom Consulting Limited | Professional & scientific | 2025 |
| Queenston Securities Limited | Real estate | 2002 |
| Quelques Choses Limited | Wholesale & retail | 1979 |
| Quick Auto Service Limited | Wholesale & retail | 2019 |
| Quick Buy Online Ltd | Wholesale & retail | 2025 |
| Quick FIX Properties Ltd | Households | 2020 |
| Quick Motor Services Ltd | Real estate | 2024 |
| Quick Way Logistics Ltd | Transport & logistics | 2024 |
| Quickill Pest Control Ltd | Administrative & support | 2020 |
| Quickkartify Ltd | Wholesale & retail | 2026 |
| Quickliftuk Ltd | Construction | 2016 |
| Quintessential Developments (UK) Ltd | Real estate | 2014 |
| Quizczar Games Ltd | Arts & recreation | 2020 |
| QZ Metal Fabrication Ltd | Manufacturing | 2024 |
| R & J Property Developments Limited | Real estate | 2002 |