| Protected Trust Services (Business) Limited | Information & communication | 2014 |
| Protected Trust Services (Travel) Limited | Administrative & support | 2017 |
| Protected Trust Services Limited | Administrative & support | 2007 |
| Protected-On-Line Limited | Financial services | 2009 |
| Protectingyourboxuk Limited | Financial services | 2015 |
| Protection and Communication Engineering Limited | Professional & scientific | 2020 |
| Protection and Mortgage Group HC Ltd | Financial services | 2023 |
| Protection Refined Limited | Financial services | 2017 |
| Protective World Ltd | Wholesale & retail | 2015 |
| Proteger Ltd | Administrative & support | 2010 |
| Protexnet Solutions Ltd | Information & communication | 2023 |
| Protium Engineering Ltd | Professional & scientific | 2016 |
| Protonic Games Ltd | Arts & recreation | 2021 |
| Protostar Investments Ltd | Financial services | 2023 |
| Provenience Drylining and Plastering Ltd | Construction | 2026 |
| Providence Pharma Ltd | Wholesale & retail | 2026 |
| Prozone Cleaning Co Ltd | Administrative & support | 2025 |
| Prudent Estates Limited | Real estate | 2026 |
| Prudent Technologies Ltd | Information & communication | 2022 |
| Prudentia Business Services Ltd | Professional & scientific | 2025 |
| PS Mobile Tyres Ltd | Wholesale & retail | 2025 |
| Psag Limited | Information & communication | 2023 |
| PSB Sales Limited | Wholesale & retail | 2014 |
| PSB Scaffolding Group Limited | Professional & scientific | 2013 |
| Psdr Consulting Limited | Professional & scientific | 2022 |
| PSG Paint Ltd | Manufacturing | 2019 |
| Psyche Therapy Ltd | Other services | 2022 |
| PT Auto (Dorset) Ltd | Wholesale & retail | 2024 |
| Ptmp Training Ltd | Education | 2019 |
| PTS Associates Ltd | Professional & scientific | 2025 |
| PUB Tale Limited | Construction | 2018 |
| Public Affairs Group Limited | Professional & scientific | 2021 |
| Public Fashion Ltd | Wholesale & retail | 2026 |
| Public Sector Solution Management Ltd | Professional & scientific | 2020 |
| Publishers International Marketing Limited | Information & communication | 2010 |
| Puff and Vape Limited | Wholesale & retail | 2022 |
| Pullan Consultancy Ltd | Professional & scientific | 2019 |
| Pullan Property Management Ltd | Real estate | 2022 |
| Pulsecrm Ltd | Information & communication | 2019 |
| Pupils Optical Ltd | Wholesale & retail | 2025 |
| Pupncup Ltd | Wholesale & retail | 2025 |
| Puppet BEE Theatre Ltd | Arts & recreation | 2024 |
| Pura Water Filters Ltd | Construction | 2025 |
| Purbeck Valet Domestic Ltd | Other services | 2020 |
| Purbeck Valley Property Limited | Households | 2011 |
| Pure Cleaning Services South Ltd | Administrative & support | 2021 |
| Pure Flow Ltd | Manufacturing | 2023 |
| Pure Greens Fruit & VEG Ltd | Other services | 2024 |
| Pure Town Planning Limited | Professional & scientific | 2011 |
| Pure Wellness Centre Limited | Health & social care | 2017 |
| Pure.Crest Ltd | Professional & scientific | 2019 |
| Purely Platinum Holdings Limited | Financial services | 2020 |
| Purewatt Energy Ltd | Wholesale & retail | 2026 |
| Purja Ltd | Real estate | 2026 |
| Puro Gusto Restaurant Ltd | Hospitality | 2026 |
| Purple Care Limited | Health & social care | 2007 |
| Purple Fairy Ltd | Real estate | 2015 |
| Purple Jaguar Fundraising Consultancy Ltd | Professional & scientific | 2025 |
| Purple Tuna Ltd | Administrative & support | 2003 |
| PURPOSE2PROPERTY Filton Limited | Construction | 2021 |
| PURPOSE2PROPERTY Limited | Real estate | 2018 |
| Pursers Limited | Real estate | 1997 |
| Purtunia House Limited | Real estate | 2025 |
| Push to Talk Limited | Information & communication | 1990 |
| Puzuzu Shipping Ltd | Transport & logistics | 2024 |
| Pvsb Homes Ltd | Real estate | 2019 |
| PWJ Assets Limited | Real estate | 2024 |
| PWR Window and Door Services Ltd | Construction | 2023 |
| PX Trade Sales Ltd | Wholesale & retail | 2011 |
| PXL Screens Ltd | Administrative & support | 2021 |
| PY Finance Limited | Real estate | 2010 |
| PYL Properties Ltd | Construction | 2015 |
| Pyramid Cafe and Lounge Limited | Hospitality | 2024 |
| Q Gardening Ltd | Professional & scientific | 2025 |
| Q Motors (UK) Ltd | Wholesale & retail | 2011 |
| Q P Care Ltd | Administrative & support | 2020 |
| Q Taxis and Partners Ltd | Extraterritorial | 2019 |
| Q.C.R. Company Limited | Real estate | 1997 |
| QBR Ltd | Wholesale & retail | 2021 |
| QBS Learning UK Ltd | Information & communication | 2021 |
| QHB Hospitality Bournemouth Ltd | Hospitality | 2023 |
| Qoin Ltd | Administrative & support | 2021 |
| QP Engineering Ltd | Manufacturing | 2014 |
| Qtest Battery Systems Limited | Manufacturing | 2024 |
| Qualia Properties Limited | Real estate | 2017 |
| Quality Auto Repair Ltd | Wholesale & retail | 2025 |
| Quality Care Dorset Ltd | Health & social care | 2019 |
| Quality Care Matters Consultancy Limited | Health & social care | 2022 |
| Quality Finish Plastering Ltd | Construction | 2022 |
| Quality Health Care Investments Limited | Real estate | 1988 |
| Quality Healthcare Professionals Ltd | Administrative & support | 2021 |
| Quality Mark UK Ltd | Professional & scientific | 2023 |
| Quality Marquee Hire (Southern) Ltd | Administrative & support | 2021 |
| Quality Solutions Wessex Limited | Professional & scientific | 2003 |
| Quanterae Solutions Ltd | Professional & scientific | 2025 |
| Quantis Fire Services Ltd | Professional & scientific | 2025 |
| Quantum Advanced Systems Limited | Wholesale & retail | 2006 |
| Quantum Card Services Ltd | Information & communication | 2002 |
| Quantum Civil Engineering Limited | Construction | 2017 |
| Quantum Field Electrical Ltd | Construction | 2025 |