| Primecraft Traders Ltd | Wholesale & retail | 2024 |
| Primeview Tech Services Ltd | Administrative & support | 2025 |
| Primrose Care Services Ltd | Public administration | 2020 |
| Princess Property Limited | Extraterritorial | 2022 |
| Principal Compliance Ltd | Professional & scientific | 2020 |
| Principessa Ltd | Administrative & support | 2022 |
| Principle Projects Limited | Information & communication | 2014 |
| Printably Ltd | Wholesale & retail | 2025 |
| Printcare Universal UK Limited | Administrative & support | 2019 |
| Printing Services London Ltd | Information & communication | 2020 |
| Printium Properties Limited | Financial services | 2021 |
| Printrain Limited | Manufacturing | 2013 |
| Priority 5 Plumbing & Heating Limited | Construction | 2018 |
| Priority AV Ltd | Other services | 2008 |
| Priority Tree Services Ltd | Administrative & support | 2021 |
| Priory House Management Company Limited | Professional & scientific | 1983 |
| Priory Quay Residents Management Company Limited | Administrative & support | 2005 |
| Prisi Trans Ltd | Transport & logistics | 2024 |
| Prism Alarms & Security Limited | Administrative & support | 2007 |
| Prism Property Limited | Construction | 2015 |
| Prism Star Training Ltd | Education | 2026 |
| Pristine Oven Clean Ltd | Administrative & support | 2022 |
| Pristine Specialist Cleaning Services Limited | Construction | 2009 |
| Privatesector Property Management Limited | Households | 1987 |
| Privilege Logistics Limited | Transport & logistics | 2014 |
| PRM (2022) Limited | Professional & scientific | 2022 |
| Pro Books Accountancy & Bookkeeping Services Ltd | Professional & scientific | 2020 |
| Pro Guard Roofing Specialists Ltd | Construction | 2024 |
| Pro Herbal Limited | Wholesale & retail | 2020 |
| Pro Kent Cleaning Ltd | Administrative & support | 2024 |
| Pro Kent Properties Ltd | Real estate | 2021 |
| Pro Panel Insights Group Ltd | Professional & scientific | 2025 |
| Pro Shoe Repairs Ltd | Other services | 2022 |
| Pro Spray Upvc Ltd | Manufacturing | 2019 |
| Pro'Shea Limited | Hospitality | 2017 |
| Pro-Capital Corporation Limited | Professional & scientific | 2014 |
| PRO.13. Ltd | Construction | 2024 |
| Proactive Safeguarding Ltd | Public administration | 2022 |
| Proartist Ltd | Construction | 2011 |
| Proboscis | Information & communication | 1996 |
| Procare Complete Cover Ltd | Financial services | 2024 |
| Procea Limited | Professional & scientific | 2023 |
| Process Exchange Limited | Professional & scientific | 2010 |
| Processively Ltd | Information & communication | 2019 |
| Proctor & Co Limited | Construction | 1997 |
| Procurement and Cost Control Limited | Professional & scientific | 2017 |
| Produced in Kent Limited | Other services | 2005 |
| Product Angels Group Ltd | Wholesale & retail | 2020 |
| Product Paradise Ltd | Wholesale & retail | 2024 |
| Productions Inc Limited | Information & communication | 2010 |
| Prody Books Ltd | Professional & scientific | 2016 |
| Proex Valves Limited | Extraterritorial | 2017 |
| Professional - Build Consulting Limited | Construction | 2024 |
| Professional Drawing Services Ltd | Professional & scientific | 2023 |
| Professional Products Ltd | Wholesale & retail | 2021 |
| Profile Construction Consultants Limited | Administrative & support | 1994 |
| Profision Shipping Capital Management Ltd | Financial services | 2015 |
| Proflow Solutions Ltd | Construction | 2026 |
| Profound Psychology Limited | Health & social care | 2023 |
| Progenie Ltd | Financial services | 2011 |
| Progress Comms Ltd | Information & communication | 2011 |
| Progress LMD Services Ltd | Transport & logistics | 2021 |
| Proguide Roofing and Guttering Ltd | Construction | 2025 |
| Prohealth Therapy Limited | Health & social care | 2019 |
| Project Management Surveying Ltd | Professional & scientific | 2022 |
| Project Oasis Limited | Financial services | 2020 |
| Projectiveai Ltd | Information & communication | 2018 |
| Prologix Surveying Ltd | Professional & scientific | 2024 |
| Promethean Global Limited | Real estate | 2017 |
| Promise Properties Ltd | Real estate | 2022 |
| Pronto Ross-On-Wye Ltd | Hospitality | 2023 |
| Pronurture Group Ltd | Health & social care | 2025 |
| Proofofwork Technologies Ltd | Information & communication | 2026 |
| Propaint Bodyshop Ltd | Wholesale & retail | 2024 |
| Propellernet Holdings Ltd | Professional & scientific | 2020 |
| Propellernet Ltd | Professional & scientific | 2003 |
| Properties Nationwide Ltd | Real estate | 2022 |
| Property 80 Ltd | Real estate | 2025 |
| Property Care Building Maintenance Limited | Construction | 2019 |
| Property KEYS2GO Ltd | Households | 2025 |
| Property Management (Henley) Limited | Financial services | 1980 |
| Property.Kent Ltd | Real estate | 2021 |
| Propertymart Ltd | Construction | 2022 |
| Propscsa Ltd | Real estate | 2023 |
| Prose on Pixels Holdings Limited | Financial services | 2021 |
| Prose on Pixels UK Limited | Professional & scientific | 2015 |
| Prospect Communications Services Limited | Information & communication | 2010 |
| Prospect Freight Solution Limited | Wholesale & retail | 2014 |
| Prosperous Way Ltd | Wholesale & retail | 2020 |
| Prostyle Design Solutions Limited | Construction | 2019 |
| Protea Educational and IT Services Limited | Information & communication | 2020 |
| Protea Sonos Imaging Ltd | Public administration | 2025 |
| Protech Doors Ltd | Manufacturing | 2013 |
| Protex Pest Control Services Ltd | Administrative & support | 2008 |
| Proton Motor Power Systems Ltd | Professional & scientific | 2006 |
| Provendesign( Consultancy) Limited | Professional & scientific | 2014 |
| Providence Lodge Limited | Administrative & support | 2022 |
| Provident Property Services Limited | Real estate | 2023 |
| Provision Training UK Limited | Education | 2013 |
| PRP (Kent) Limited | Real estate | 2001 |