| Postlethwaite Consultancy Services Limited | Professional & scientific | 2024 |
| Potentiate SW London & Surrey Ltd | Arts & recreation | 2024 |
| Povey Cross Management Company Limited | Households | 2002 |
| PP Ices Limited | Hospitality | 2025 |
| Pracserve Properties Limited | Real estate | 2016 |
| Precisionbytes Tech Limited | Information & communication | 2024 |
| Premier IT Services Ltd | Information & communication | 2025 |
| Premier IT Solution Limited | Information & communication | 2018 |
| Premier Mini CAB Services (UK) Limited | Other services | 2013 |
| Premier Properties Limited | Construction | 2004 |
| Premiermastercleaners Ltd | Administrative & support | 2025 |
| Premium Joinery and Carpentry Limited | Construction | 2015 |
| Premium Team Ltd | Manufacturing | 2022 |
| Pressure Clean & Garden Maintenance Ltd | Construction | 2023 |
| Prestige Courier Services Limited | Transport & logistics | 1982 |
| Prestige Structural Solutions Ltd | Construction | 2017 |
| Pricescience Limited | Administrative & support | 2019 |
| Pride Vape Limited | Wholesale & retail | 2019 |
| Prideyear (1996) Limited | Administrative & support | 1996 |
| Prima Maintenance Services Limited | Construction | 2025 |
| Primeforge Limited | Wholesale & retail | 2025 |
| Primrose Wellman Creative Services Limited | Professional & scientific | 2017 |
| Princess Court (Wimbledon) Limited | Households | 2001 |
| Printland Limited | Manufacturing | 2015 |
| Priory Builders Ltd | Real estate | 2021 |
| Pro Gecko Limited | Real estate | 2018 |
| Project Data Limited | Information & communication | 2026 |
| Project Vector Ltd | Information & communication | 2021 |
| Projtech Ltd | Information & communication | 2009 |
| Prologue London Ltd | Hospitality | 2025 |
| Pronto Property Sourcing Limited | Real estate | 2023 |
| Propharma Consultancy Ltd | Wholesale & retail | 2016 |
| Propose Tech Limited | Information & communication | 2025 |
| Prorenovate & Design Limited | Construction | 2023 |
| Prospect Avenue Ltd | Construction | 2016 |
| Protech Innovative Solutions Limited | Professional & scientific | 2018 |
| Protect Bidco Limited | Financial services | 2021 |
| Protect Midco 1 Limited | Financial services | 2021 |
| Protect Midco 2 Limited | Financial services | 2021 |
| Proud Pickles Limited Limited | Hospitality | 2026 |
| Providus Limited | Information & communication | 2014 |
| Provik Limited | Professional & scientific | 2022 |
| PS Contractors Ltd | Extraterritorial | 2025 |
| Pshb Engineering Ltd | Construction | 2015 |
| Pure Eco Power Ltd | Wholesale & retail | 2022 |
| Purely Hair and Beauty Ltd | Other services | 2022 |
| Purism Properties Limited | Real estate | 2010 |
| Purl Limited | Information & communication | 2017 |
| Purl Properties Ltd | Real estate | 2023 |
| Purley Reit Ltd | Construction | 2024 |
| Purple and Orange Ltd. | Information & communication | 2005 |
| Purpose Travel Limited | Administrative & support | 2022 |
| Pushka Home Ltd | Wholesale & retail | 2012 |
| Pynes Consulting Limited | Professional & scientific | 2025 |
| Q4 Capital Advisors Ltd | Professional & scientific | 2020 |
| Qondile Consulting Limited | Professional & scientific | 2013 |
| QR Plumbing and Heating Limited | Construction | 2023 |
| Quality Fire Stop Ltd | Construction | 2019 |
| Quark Technology Limited | Information & communication | 2017 |
| Queen's Court (Barnes) Limited | Households | 1997 |
| Queensborough House (Weybridge) Management Company Limited | Households | 2003 |
| Quickfix London Ltd | Professional & scientific | 2023 |
| Quinonfran Ltd | Health & social care | 2013 |
| Quintessence Publishing Company Limited | Information & communication | 1982 |
| Quinto Alpha Ltd | Information & communication | 2020 |
| R & P Collective Limited | Construction | 2025 |
| R & XH Builder Limited | Construction | 2025 |
| R Kikz Ltd | Wholesale & retail | 2019 |
| R&E Sports Management Limited | Arts & recreation | 2018 |
| R&T Painting Ltd | Construction | 2021 |
| R.R. Secretarial Limited | Administrative & support | 2007 |
| Rachel Rebello Ltd | Education | 2025 |
| Ractive Ltd | Information & communication | 2018 |
| Rada Builders Ltd | Construction | 2025 |
| Rada Cars UK Ltd | Wholesale & retail | 2025 |
| Radiant Realty Ltd | Real estate | 2025 |
| Rafal Borek Limited | Financial services | 2023 |
| Raheel Mushtaq Limited | Professional & scientific | 2012 |
| Rajku Construction Ltd | Construction | 2019 |
| Raju E Commerce Ltd | Wholesale & retail | 2025 |
| Rajwali Limited | Transport & logistics | 2025 |
| Rakat CT Ltd | Other services | 2003 |
| Rakhi Nayar Limited | Professional & scientific | 2016 |
| Ramesh Property Management Ltd | Real estate | 2002 |
| Rana Beauty London Ltd | Other services | 2025 |
| Rano Properties Limited | Real estate | 2025 |
| RAO Estate Ltd | Real estate | 2023 |
| Rapidkey Automotive Ltd | Other services | 2020 |
| Rasi Home Ltd | Hospitality | 2021 |
| Ratchet Creations Ltd | Manufacturing | 2025 |
| Ravesparlor Limited | Other services | 2024 |
| Ravo Ltd | Wholesale & retail | 2024 |
| RAW Tonic Co. Ltd | Hospitality | 2017 |
| RAY and Ice Global Ltd | Real estate | 2026 |
| RAY Stevens Fitness Limited | Arts & recreation | 2007 |
| Raza Jaffri Financial Services Ltd | Financial services | 2016 |
| Razen Ltd | Wholesale & retail | 2026 |
| RD Construction International Ltd | Construction | 2023 |
| RDV Management Limited | Hospitality | 2019 |
| Real Estate Enterprises Ltd | Real estate | 2020 |