| Porters Grove (ST. Leonards) Management Company Limited | Real estate | 2022 |
| Posh Floors Limited | Administrative & support | 2002 |
| Post and Packing Franchising Limited | Transport & logistics | 2015 |
| Post Haste Media Limited | Information & communication | 2011 |
| Potion Law & Marketing Limited | Administrative & support | 2015 |
| Potters Hand Cleaning Services Ltd | Construction | 2019 |
| PP Electrical Ltd | Construction | 2019 |
| Precision Drivers Limited | Other services | 2012 |
| Precision Plastics (London) Limited | Construction | 2003 |
| Precisionlab Instruments Ltd | Wholesale & retail | 2026 |
| Premier Auto Renovations Ltd | Wholesale & retail | 2020 |
| Premier Tooling Limited | Professional & scientific | 2018 |
| Premium Window Cleaning Services Limited | Administrative & support | 2025 |
| Prestige Panel Craft and Servicing Limited | Wholesale & retail | 2015 |
| Prideaux Consultancy Limited | Professional & scientific | 2024 |
| Prime Programme Integrity Management Ltd | Professional & scientific | 2018 |
| Principal Architects Ltd | Professional & scientific | 2023 |
| Priordube Ltd | Health & social care | 2023 |
| Private Care Solutions Ltd | Administrative & support | 2018 |
| PRO2 Automotive Engineering Limited | Professional & scientific | 2007 |
| Production Fifty One Limited | Other services | 2011 |
| Prohealth Skills Ltd | Administrative & support | 2015 |
| Project One Racing Group Limited | Arts & recreation | 2024 |
| Project One Racing Limited | Extraterritorial | 2024 |
| Projectzone Limited | Construction | 2017 |
| Propeller Aviation Limited | Professional & scientific | 2022 |
| Property Development Projects Limited | Construction | 2013 |
| Prospects Payroll Limited | Administrative & support | 1996 |
| Provectus Developments 1 Ltd | Financial services | 2019 |
| Provectus Developments Ltd | Construction | 2022 |
| Provectus Holdings Ltd | Construction | 2019 |
| Provectus Land Ltd | Real estate | 2019 |
| Provident Recruitment Ltd | Administrative & support | 2011 |
| PTA Construction Limited | Construction | 2010 |
| PTP Coaching Ltd | Arts & recreation | 2019 |
| PTP Collective Ltd | Arts & recreation | 2023 |
| PTP Organisation Ltd | Arts & recreation | 2025 |
| PTP Works Ltd | Construction | 2026 |
| Puffin Shipping Limited | Transport & logistics | 1988 |
| Pulse Fixings 2000 Ltd | Wholesale & retail | 2012 |
| Pulse Padel (Caerphilly) Ltd | Arts & recreation | 2026 |
| Pulse Padel (Dartford) Ltd | Arts & recreation | 2024 |
| Pulse Padel (Peterborough) Ltd | Arts & recreation | 2025 |
| Pulse Padel (Sittingbourne) Ltd | Arts & recreation | 2026 |
| Pulse Padel Group Ltd | Arts & recreation | 2024 |
| Pulse Padel Leisure Ltd | Arts & recreation | 2010 |
| Pupmate Ltd | Professional & scientific | 2026 |
| Pure Organic Ltd | Construction | 2014 |
| Purecom Solutions Limited | Extraterritorial | 2000 |
| Purely Patterns Ltd | Manufacturing | 2025 |
| PW Physiotherapy Limited | Health & social care | 2017 |
| PWM Services Limited | Professional & scientific | 2025 |
| Pxdl Sports Limited | Wholesale & retail | 2026 |
| Pyralis Pharma Limited | Professional & scientific | 2011 |
| Q I Statistics Limited | Professional & scientific | 2001 |
| Q.A. International Certification Limited | Other services | 1992 |
| QA Mansions Limited | Households | 1985 |
| Qaic (Packaging) Ltd | Other services | 2011 |
| QI Management Limited | Professional & scientific | 2013 |
| Qlue Limited | Information & communication | 2007 |
| Quadra Heritage Ltd | Financial services | 2025 |
| Qualis Properties (Kent) Ltd | Real estate | 2019 |
| Quality Fire Safety Management (EOT) Limited | Financial services | 2026 |
| Quality Fire Safety Management Limited | Public administration | 2005 |
| Quernstone Limited | Professional & scientific | 2001 |
| R Dsouza Properties Limited | Real estate | 2024 |
| R E S Property Investments Limited | Real estate | 2022 |
| R Gould Limited | Construction | 2006 |
| R M Radiology Limited | Health & social care | 2012 |
| R M Real Estates Limited | Real estate | 2018 |
| R Mankragod Limited | Health & social care | 2024 |
| R N Syed Ltd | Health & social care | 2022 |
| R Whyte Properties Limited | Real estate | 2018 |
| R&N Utilities Ltd | Energy | 2024 |
| R-Invest 7 Ltd | Information & communication | 2017 |
| R.P.M. Installations (Kent) Limited | Manufacturing | 1983 |
| R.T.Warren(Builders,St.Albans)Limited | Professional & scientific | 1936 |
| RA Accounts Ltd | Professional & scientific | 2018 |
| Rabb Inns Limited | Real estate | 1983 |
| Radbourne Consulting Limited | Professional & scientific | 2009 |
| Radbourne Expeditions Limited | Professional & scientific | 2011 |
| Radfall Haven Ltd | Construction | 2022 |
| Radiant Rooms Cleaning Services Limited | Administrative & support | 2023 |
| Ramsden Regeneration LLP | | 2010 |
| Rasco Services Ltd | Professional & scientific | 2015 |
| Rasen Estates Limited | Construction | 2001 |
| Ravish Mankragod Limited | Health & social care | 2012 |
| Rawlings Associates Limited | Professional & scientific | 1984 |
| RB Lettings & Property Management Ltd | Real estate | 2016 |
| Rbconsult Limited | Administrative & support | 2009 |
| RC Kent Limited | Other services | 2025 |
| RCT Project Management Limited | Administrative & support | 2016 |
| RDD Management Group Limited | Professional & scientific | 2026 |
| RDR Property Investments Ltd | Real estate | 2020 |
| RE Property and Developments Ltd | Real estate | 2024 |
| Rebiere Holdings Ltd | Other services | 2020 |
| Rectory Management Limited | Households | 1979 |
| Redplay Limited | Construction | 2002 |
| Redplay Partnerships Limited | Construction | 2019 |
| Reds Engineering Ltd | Professional & scientific | 2026 |