| Prism Information Technology Services Limited | Information & communication | 1999 |
| Prism Interior Services Limited | Construction | 2008 |
| Private Pregnancy Ultrasound Services Ltd Trading AS Expectancy Scanning Studios Ltd | Health & social care | 2015 |
| Privilegio Limited | Information & communication | 2015 |
| PRL Investments Ltd | Real estate | 2022 |
| PRN Pharma Ltd | Wholesale & retail | 2022 |
| Pro Legal Group Limited | Administrative & support | 2022 |
| Pro Properties Kent Limited | Real estate | 2021 |
| Pro Screen App Ltd | Information & communication | 2024 |
| Pro TLS UK Ltd | Wholesale & retail | 2021 |
| Pro-Active Technical Solutions Limited | Wholesale & retail | 2006 |
| Pro-Fit Bespoke Kitchens and Furniture Ltd | Construction | 2025 |
| Proarc Ltd | Professional & scientific | 2016 |
| Procands Events Limited | Administrative & support | 2017 |
| Procands Limited | Administrative & support | 2019 |
| Process Efficiency Solutions Ltd | Professional & scientific | 2015 |
| Profdom Limited | Health & social care | 2022 |
| Professional Canine and Security Limited | Administrative & support | 2016 |
| Professional Legal Collections Ltd | Financial services | 2014 |
| Professional Legal Company Limited | Administrative & support | 2022 |
| Professional Legal Compliance Limited | Professional & scientific | 2021 |
| Professional Legal Contracts Limited | Administrative & support | 2022 |
| Professional Litigation Company Limited | Professional & scientific | 2022 |
| Progressive Mandate Limited | Other services | 2026 |
| Prohab Clinics Ltd | Health & social care | 2025 |
| Project 77 Limited | Professional & scientific | 2013 |
| Project Dimension Limited | Energy | 2008 |
| Projology Ltd | Real estate | 2006 |
| Prolek Contractors Ltd | Construction | 2025 |
| Prolek Holdings Limited | Administrative & support | 2019 |
| Prolek Properties Limited | Real estate | 2022 |
| Prometheus Fire Detection and Security Ltd | Public administration | 2020 |
| Proofshield Ltd | Manufacturing | 2018 |
| Properties Underway Ltd | Real estate | 2020 |
| Property Investment Technologies Limited | Information & communication | 2025 |
| Property Powwow Community CIC | Education | 2026 |
| Property Powwow Ltd | Administrative & support | 2026 |
| Property-O Ltd | Households | 2021 |
| Prospect Marketing (UK) Limited | Administrative & support | 1999 |
| Prospect Print Management (UK) Limited | Manufacturing | 1995 |
| Protection Against Stalking | Professional & scientific | 2009 |
| Prowired Electrical Ltd | Construction | 2012 |
| PRR Service Ltd | Wholesale & retail | 2025 |
| PRS Air Conditioning Ltd | Construction | 2021 |
| PS Haulage Limited | Transport & logistics | 2017 |
| PSP Consultancy Limited | Information & communication | 2015 |
| PSR Restaurant's Ltd | Hospitality | 2024 |
| Psychic Proof Limited | Extraterritorial | 2007 |
| Psychic Sight Limited | Extraterritorial | 2009 |
| PTE Group Limited | Financial services | 2023 |
| Pugh & Sons Flooring Ltd | Construction | 2025 |
| Pure Cooling Ltd | Energy | 2021 |
| Pure Electrical Services Limited | Construction | 2020 |
| Pure Research Limited | Information & communication | 2012 |
| Pure&Eco Ltd | Wholesale & retail | 2025 |
| Purple Octopus Management Limited | Health & social care | 2017 |
| Purpose Driven Lifestyle Limited | Wholesale & retail | 2020 |
| PV Property Investment Ltd | Real estate | 2017 |
| Pyramyd 84 Limited | Wholesale & retail | 2021 |
| Q Catering Supplies Limited | Wholesale & retail | 1998 |
| Quadpro Consulting Limited | Real estate | 2014 |
| Quality Air Engineering Limited | Energy | 2025 |
| Quality Simply Ltd | Information & communication | 2025 |
| Quality Team Healthcare Ltd | Health & social care | 2023 |
| Quantum Leap Inc. Limited | Administrative & support | 2007 |
| Quarfinite Ltd | Wholesale & retail | 2021 |
| Quayside Marketing & Communications Limited | Professional & scientific | 1989 |
| Quealy & Co Financial Services Limited | Financial services | 2019 |
| Quealy & Co Holdings Limited | Real estate | 2022 |
| Quealy & Co Land and New Homes Limited | Real estate | 2017 |
| Quealy & Co. Residential Lettings Limited | Real estate | 2005 |
| Queenborough Barber Ltd | Other services | 2025 |
| Queenborough Marine Welding Limited | Manufacturing | 1983 |
| Queensbridge Distribution Ltd | Professional & scientific | 2006 |
| Quen Nails 2002 Limited | Other services | 2025 |
| Quick Plant and Tools Limited | Administrative & support | 2025 |
| Quick Waste Limited | Water & waste | 2018 |
| Quinn Pulse Services Ltd | Construction | 2023 |
| Quoncept Ltd | Administrative & support | 2020 |
| R & H Motor Group Limited | Administrative & support | 2017 |
| R & R Deer Management Ltd | Agriculture & fishing | 2021 |
| R Acott Ltd | Construction | 2018 |
| R and C Tyres Ltd | Wholesale & retail | 2024 |
| R and H Car Sales Limited | Wholesale & retail | 2020 |
| R M Builders Kent Ltd | Construction | 2017 |
| R Quinn Properties Ltd | Real estate | 2024 |
| R Quinn Utilities Ltd | Construction | 2021 |
| R Sowaruth Ltd | Health & social care | 2013 |
| R&Aj Services Limited | Professional & scientific | 2014 |
| R&G Antics Limited | Other services | 2025 |
| R&J Brickwork Limited | Construction | 2020 |
| R&M Surfacing Ltd | Construction | 2023 |
| R&R Trans Ltd | Transport & logistics | 2019 |
| R3BORN Limited | Wholesale & retail | 2026 |
| Radeshani Enterprise Limited | Health & social care | 2016 |
| Radfield Limited | Agriculture & fishing | 1946 |
| Radfield Teynham Limited | Arts & recreation | 1971 |
| Radius Computing Ltd | Information & communication | 2017 |
| Radu Trans 2023 Ltd | Transport & logistics | 2023 |
| Raha Accountancy Limited | Professional & scientific | 2011 |