| Prai Business Consulting Limited | Professional & scientific | 2025 |
| Pratech Solutions and Consultancy Ltd | Information & communication | 2016 |
| Praveks Ltd | Real estate | 2025 |
| Prebinvest Ltd | Wholesale & retail | 2012 |
| Precision Medical Aesthetics Limited | Other services | 2025 |
| Preeti 97 Business Management Ltd | Professional & scientific | 2024 |
| Premier Hardware Ltd | Administrative & support | 2023 |
| Premierbell Limited | Health & social care | 1989 |
| Prescient Solutions Ltd | Financial services | 2022 |
| Prestige Beauty International Ltd | Wholesale & retail | 2017 |
| Prestige Marques Limited | Professional & scientific | 1997 |
| Prestige Steel Doors Ltd | Construction | 2023 |
| Prestige Worldwide Global Ltd | Arts & recreation | 2025 |
| Presto Construction Ltd | Construction | 2016 |
| Pretty Ambition Limited | Other services | 2023 |
| Price PER Square Limited | Information & communication | 2024 |
| Priddy's Hard (Gosport) Management Limited | Administrative & support | 2004 |
| Prima Fitness UK Classes Ltd | Arts & recreation | 2015 |
| Primary Education Advisors Limited | Education | 2017 |
| Prime Care Building Maintenance Limited | Construction | 2025 |
| Prime Change Consulting Limited | Extraterritorial | 2013 |
| Prime Corporation Limited | Administrative & support | 2002 |
| Prime Education Limited | Administrative & support | 2008 |
| Prime Scaffolding Ltd | Construction | 2002 |
| Primecheck Limited | Other services | 2019 |
| Primefix Handyman Services Ltd | Other services | 2025 |
| Primenest Management Ltd | Real estate | 2024 |
| Primerose Properties Unlimited Company | Financial services | 2022 |
| Primesource UK Limited | Administrative & support | 2008 |
| Primo Element Ltd | Wholesale & retail | 2025 |
| Princess Court (Haywards Heath) Management Limited | Households | 2004 |
| Princeton Works Limited | Real estate | 2024 |
| Principium Ltd. | Professional & scientific | 1995 |
| Priority Commercials Limited | Wholesale & retail | 2012 |
| Privateadhd.Com Ltd | Health & social care | 2024 |
| Pro Car Parts Ltd | Wholesale & retail | 2024 |
| Pro Velo Parts Ltd | Wholesale & retail | 2023 |
| Pro-Dry (London) Ltd | Construction | 2022 |
| Pro-Fit Window Systems Ltd | Construction | 2004 |
| Probitas Fidelis Limited | Administrative & support | 2011 |
| Process Adventure Ltd | Manufacturing | 2023 |
| Process Services AL Limited | Professional & scientific | 2015 |
| Procurator LEX Ltd | Professional & scientific | 2016 |
| Production Asset Listing Limited | Information & communication | 2020 |
| Professional Legal Solutions Limited | Professional & scientific | 2010 |
| Proficere Limited | Information & communication | 2010 |
| Profinish Limited | Wholesale & retail | 1994 |
| PROFIT4U Ltd | Real estate | 2025 |
| Prognosis Planning Limited | Information & communication | 2005 |
| Progress Movement Ltd | Information & communication | 2025 |
| Project Controls Professionals Limited | Professional & scientific | 2013 |
| Project Dryad Limited | Professional & scientific | 2022 |
| Project Marquee Limited | Administrative & support | 2017 |
| Project Seventy One Limited | Construction | 2019 |
| Prometheus Holdings International Limited | Real estate | 2018 |
| Promod Works Ltd. | Professional & scientific | 2019 |
| Pronto Technologies UK Ltd | Information & communication | 2023 |
| Propel Group Limited | Financial services | 2017 |
| Property & Garden Maintenance Company Limited | Professional & scientific | 1997 |
| Property 1111 Limited | Information & communication | 2020 |
| Property 71 Ltd | Real estate | 2018 |
| Property Associate Development Ltd | Construction | 2005 |
| Property Investor Media Limited | Professional & scientific | 2008 |
| Property PAL AI Ltd | Real estate | 2023 |
| Property Three Limited | Real estate | 2021 |
| Property Transfer Co-Ordination Limited | Professional & scientific | 1983 |
| Prosell Learning Limited | Education | 2000 |
| Prospect Quay Limited | Administrative & support | 2006 |
| Prosperon Construction Limited | Construction | 2025 |
| Protea Family Company Limited | Real estate | 2026 |
| Protected Void Limited | Information & communication | 2016 |
| Proteros Biostructures (UK) Limited | Professional & scientific | 2023 |
| Protoplan Ltd | Information & communication | 2023 |
| Proud Events Ltd | Professional & scientific | 2014 |
| Proud Promotions Limited | Professional & scientific | 2024 |
| Pryme Intelligence Ltd | Information & communication | 2026 |
| Prymus Car Garage Ltd. | Wholesale & retail | 2012 |
| Psdu Technologies Limited | Information & communication | 2026 |
| PSF Structural Engineering Limited | Professional & scientific | 2007 |
| Psituk Limited | Other services | 2010 |
| PTC Solutions LLP | | 2023 |
| Puja Properties Limited | Households | 2021 |
| Pulsar Services Limited | Professional & scientific | 2007 |
| Pupil Pluck Limited | Wholesale & retail | 2025 |
| Pure International Education Ltd | Education | 2023 |
| Pure Plumbing Solutions Limited | Construction | 2015 |
| Purplast UK Limited | Wholesale & retail | 2021 |
| Purple Caterpillar Ltd | Real estate | 2024 |
| Purple Nest Ltd | Real estate | 2020 |
| Purple Pharma Limited | Wholesale & retail | 2013 |
| Purple Plant Games Limited | Wholesale & retail | 2021 |
| Purple Starlite Ltd | Wholesale & retail | 2025 |
| Push Pals Ltd | Education | 2021 |
| PVR Foods Limited | Hospitality | 2022 |
| PW Consulting Limited | Professional & scientific | 1999 |
| PWJ Architects Limited | Professional & scientific | 2012 |
| Pyper Medical Services Limited | Professional & scientific | 2010 |
| Q&A ERP Solutions Ltd | Wholesale & retail | 2025 |
| Qararli Ltd | Wholesale & retail | 2019 |
| Qiying Financial Limited | Professional & scientific | 2019 |