| Oliver RAW Fine Art Limited | Arts & recreation | 2026 |
| Online Advisory Ltd. | Information & communication | 1999 |
| Optiglow Limited | Wholesale & retail | 2025 |
| Optinet Limited | Information & communication | 1987 |
| Opus Resourcing Holdings Limited | Administrative & support | 2021 |
| Opus Resourcing Limited | Administrative & support | 2005 |
| Orchard House Construction Ltd | Construction | 2025 |
| Osaka Kent & Co. Ltd | Professional & scientific | 2025 |
| Osobenaya Ltd | Wholesale & retail | 2020 |
| Ourloma | Health & social care | 2021 |
| Over the Eight PUB Group Limited | Hospitality | 2024 |
| P&D Rosa Transport Ltd | Administrative & support | 2023 |
| P.S.Shoes Limited | Wholesale & retail | 2015 |
| Packpro Displays Ltd | Manufacturing | 2018 |
| Pagetest Limited | Transport & logistics | 1989 |
| Paish Limited | Wholesale & retail | 2010 |
| Palacios Food UK Limited | Manufacturing | 2021 |
| Panamoure Group LLP | | 2020 |
| Papergoose Ltd | Professional & scientific | 2018 |
| Park Farm (Hawkhurst) Limited | Hospitality | 2003 |
| Parrott & Parrott Fine Arts Limited | Manufacturing | 2003 |
| Patrick Durr Associates Limited | Construction | 2015 |
| Pavillon (Publishing) Limited | Information & communication | 1991 |
| Paws on Tour Limited | Other services | 2025 |
| PCH Consulting Ltd | Information & communication | 2024 |
| PCS Consulting Services Limited | Professional & scientific | 2004 |
| Pdnj Services Ltd | Professional & scientific | 2015 |
| Peacock Entertainment Limited | Hospitality | 2021 |
| Peacock Inn Holdings Ltd | Hospitality | 2025 |
| Pearson Drury Limited | Professional & scientific | 2013 |
| Peekay Publishing Limited | Information & communication | 1985 |
| Pembury Bathrooms Limited | Extraterritorial | 2021 |
| Peppers Marjon Limited | Real estate | 2018 |
| Percy Kirk Group Limited | Wholesale & retail | 1985 |
| Perfection Decorating Ltd | Construction | 2016 |
| Perfumeparadiise Ltd | Manufacturing | 2026 |
| Pest Control Solutions Limited | Administrative & support | 2019 |
| Peter Buswell Estate Agents Limited | Real estate | 2006 |
| Pink Giraffes Limited | Administrative & support | 2009 |
| PIP 2004 Limited | Financial services | 2018 |
| PIP Trustees Limited | Other services | 2018 |
| Piped-Right Limited | Construction | 2024 |
| Piper Farms Energy Limited | Energy | 2014 |
| Piper Farms Feedstock Ltd | Agriculture & fishing | 2014 |
| PIX Hall Productions | Arts & recreation | 2005 |
| Pizzuto Ltd | Health & social care | 2011 |
| PK National Eyecare Group Limited | Wholesale & retail | 1978 |
| PL Surfacing Limited | Construction | 2023 |
| Planetvista Homes Ltd | Real estate | 2025 |
| Plantworks Limited | Manufacturing | 2000 |
| Plateau International Limited | Wholesale & retail | 2018 |
| Platinum Exteriors Limited | Wholesale & retail | 2025 |
| Portica Associates Limited | Arts & recreation | 2013 |
| Portmast Limited | Construction | 1983 |
| Postern Estates Ltd | Construction | 2015 |
| Poyntell Holdings Limited | Financial services | 2021 |
| Poyntell Limited | Administrative & support | 1998 |
| Pozelo Ltd | Wholesale & retail | 2025 |
| Priceless Group Limited | Extraterritorial | 2019 |
| Prime Wines Limited | Wholesale & retail | 2016 |
| Priory Properties (Kent) Limited | Real estate | 2012 |
| Prisma Invest Limited | Extraterritorial | 2011 |
| Property Visual Ltd | Professional & scientific | 2011 |
| Providence Chapel Limited | Hospitality | 2011 |
| Prudentia Consulting Limited | Professional & scientific | 2023 |
| PTY Investments Limited | Real estate | 2025 |
| PU Consulting Associates Ltd | Professional & scientific | 2016 |
| PWL Contracts Ltd | Information & communication | 2014 |
| Pygmalion Records Limited | Information & communication | 2001 |
| Quaye & Co International Dressage Sales Limited | Wholesale & retail | 2023 |
| Quiet Threshold Limited | Information & communication | 2024 |
| R M & C Consultants Ltd. | Professional & scientific | 2001 |
| R W Banister Limited | Wholesale & retail | 2020 |
| R.F.Barnes(Farms)Limited | Agriculture & fishing | 1957 |
| R.F.T. Business Solutions Ltd | Professional & scientific | 2005 |
| Racebuild Limited | Construction | 1982 |
| Radio Systems Information Limited | Information & communication | 1991 |
| Radipole Limited | Real estate | 2001 |
| Rail & Property Consulting Ltd | Professional & scientific | 2024 |
| Rail Reliability Consultancy Services Ltd | Professional & scientific | 2020 |
| Ranters Oak Residents Association Limited | Households | 1983 |
| Rare Refined UK Ltd | Construction | 2022 |
| Rastelli Telecoms Ltd | Information & communication | 2020 |
| Ravensrock Groundworks Limited | Construction | 2008 |
| Rayns Contractors Ltd | Construction | 2018 |
| Re-Caffeinated Limited | Other services | 2020 |
| Reader Business Limited | Administrative & support | 2008 |
| Recool Limited | Professional & scientific | 2024 |
| Recrowned Ltd | Other services | 2026 |
| Recruitmentbyclinicians Ltd | Administrative & support | 2023 |
| Red FOX Retail Ltd | Hospitality | 2026 |
| Redstone Supplies Limited | Wholesale & retail | 2012 |
| Regent Psychology Associates Limited | Health & social care | 2014 |
| Relaylane Labs Ltd | Information & communication | 2026 |
| Renzo Pool Services Ltd | Administrative & support | 2026 |
| Resource Technology Capital Limited | Professional & scientific | 2017 |
| Restored Land Limited | Professional & scientific | 2023 |
| RFR Limited | Professional & scientific | 2020 |
| Rhokett Limited | Manufacturing | 2002 |
| Ridgeback Carpentry Limited | Manufacturing | 2026 |