| Propertiesbywendy Ltd | Hospitality | 2026 |
| Property Company Group Limited | Real estate | 2016 |
| Property Facilities Group Ltd | Construction | 1996 |
| Property Investment for Life Ltd | Real estate | 2019 |
| Property Wealth Developments Ltd | Construction | 2025 |
| Prophix Plus Ltd | Wholesale & retail | 2021 |
| Proptradinglabs Ltd | Education | 2024 |
| Proskuneo Limited | Information & communication | 2024 |
| Prospect Cyber Limited | Professional & scientific | 2023 |
| Prosperitas Finance Limited | Financial services | 2008 |
| Prostars Football Development Ltd | Other services | 2026 |
| Protech Ventures Limited | Professional & scientific | 2018 |
| Protectdeter Ltd | Construction | 2026 |
| Protempus 2 Limited | Real estate | 2026 |
| Protempus Limited | Other services | 1991 |
| Provetro Group Ltd | Administrative & support | 2023 |
| Providing Better Alternatives Consultancy Ltd | Professional & scientific | 2015 |
| Provisum Ltd | Professional & scientific | 2024 |
| PRS Pipework & Landfill Limited | Construction | 2004 |
| Prudence Asset & Consulting Ltd | Real estate | 2022 |
| Prudent Village | Information & communication | 2021 |
| Prudent Village, Inc. LP | | 2022 |
| Prudhoe West Ltd | Wholesale & retail | 1973 |
| Prusane Limited | Transport & logistics | 2026 |
| PSH Builders Limited | Construction | 2016 |
| Psyko Jackson LLP | | 2019 |
| Psylex Consulting Ltd | Professional & scientific | 2025 |
| PT Accounts Ltd | Professional & scientific | 2022 |
| PT Rentals Ltd | Real estate | 2025 |
| Publisherr Limited | Information & communication | 2023 |
| Puddles and Cuddles Childcare Ltd | Health & social care | 2023 |
| Puff & Munch Ltd | Wholesale & retail | 2025 |
| Pughtronics Ltd | Professional & scientific | 2015 |
| Pull UP Promotions & Events Limited | Arts & recreation | 2016 |
| Pullman Court (Streatham) Management Co Limited | Real estate | 1977 |
| Pullman Mews Management Company Limited | Real estate | 2000 |
| Pump House Freehold Management Limited | Households | 2005 |
| Punch First Limited | Arts & recreation | 2017 |
| Pure Pictures Limited | Information & communication | 2004 |
| Purecraftcleaning Ltd | Administrative & support | 2025 |
| Purelake Investments Limited | Real estate | 1998 |
| Purelake New Homes Limited | Construction | 1992 |
| Purelake Properties Limited | Real estate | 1991 |
| Purelites Ltd | Wholesale & retail | 1996 |
| Purely YOU Aesthetics Limited | Other services | 2023 |
| Puresky Window Cleaning Ltd | Administrative & support | 2022 |
| Purewhite Creative Group Ltd. | Professional & scientific | 2009 |
| Purfect Cat Limited | Wholesale & retail | 2025 |
| Purity Sweet Clean Laundry Limited | Other services | 1929 |
| Purple PEA Services Ltd | Administrative & support | 2019 |
| Purple Power Electrical Ltd | Construction | 2017 |
| Purplefully Ltd | Professional & scientific | 2021 |
| Purpose and Profit Ltd. | Professional & scientific | 2017 |
| Purpose Partners Consulting Ltd | Information & communication | 2026 |
| Purpose Physiotherapy Ltd | Administrative & support | 2022 |
| Pushkin Ltd | Wholesale & retail | 2015 |
| PV Brand and Medical Services Ltd | Wholesale & retail | 2021 |
| PVP Consulting Limited | Professional & scientific | 2015 |
| PW United Ltd | Real estate | 2026 |
| PWR House Advisory Limited | Administrative & support | 2023 |
| PWR House Consulting Limited | Administrative & support | 2025 |
| PWR House Technology Limited | Professional & scientific | 2025 |
| PWR TWR Ltd | Construction | 2025 |
| Pyrite VR Ltd | Manufacturing | 2019 |
| Q Security Solutions Limited | Administrative & support | 2019 |
| Q Space Ltd | Construction | 2019 |
| Q Tech Private Ltd | Administrative & support | 2024 |
| Q&P Plumbing Ltd | Construction | 2026 |
| QC Security Ltd | Administrative & support | 2016 |
| Qgold Limited | Administrative & support | 2016 |
| Qhse International Ltd. | Professional & scientific | 2025 |
| QI Success Ltd | Administrative & support | 2021 |
| QID Management Limited | Real estate | 2025 |
| Qilotyan Limited | Other services | 2021 |
| Qingdao Jihe Chemical Co Ltd | Extraterritorial | 2020 |
| Qissah Ltd | Information & communication | 2026 |
| QN Seles Limited | Hospitality | 2024 |
| QQ LEI & MEE Ltd | Real estate | 2025 |
| Qssp Ltd | Professional & scientific | 2020 |
| Qstruct Ltd | Information & communication | 2014 |
| Quad Estates Limited | Real estate | 2017 |
| Quadblocks Ltd | Information & communication | 2025 |
| Quadrifoglio Consulting Ltd | Administrative & support | 2023 |
| Qualhub Limited | Education | 2015 |
| Qualitas Vitae Care Limited | Health & social care | 2017 |
| Quality Brickwork GB Limited | Construction | 2010 |
| Quality TM & Events Ltd | Manufacturing | 2020 |
| Quality Workwear Services Limited | Other services | 1966 |
| Quanast Services | Professional & scientific | 1976 |
| Quantology Solutions Ltd | Information & communication | 2023 |
| Quantom Limited | Wholesale & retail | 2011 |
| Quantum Bridge Capital Ltd | Financial services | 2019 |
| Quantum Financial Services Ltd | Financial services | 2024 |
| Quantum PR Limited | Professional & scientific | 2024 |
| Quantum Properties Group Limited | Real estate | 2025 |
| Quartco Limited | Manufacturing | 2021 |
| Quartette Capital Ltd | Professional & scientific | 2019 |
| Quartette Properties Limited | Real estate | 2020 |
| Quatro Consulting Limited | Information & communication | 2013 |
| Quaver Construction Ltd | Construction | 2015 |