| Psychopomp Ltd | Manufacturing | 2014 |
| Psychostasia Limited | Professional & scientific | 2021 |
| Psyclinic Ltd | Health & social care | 2022 |
| Psyedu Ltd | Education | 2023 |
| Psykhe Services Ltd | Other services | 2019 |
| Psyop Ltd | Extraterritorial | 2022 |
| PTC Construction Ltd | Construction | 2026 |
| Ptha Properties Limited | Real estate | 2021 |
| Ptit Ltd | Information & communication | 2019 |
| Ptjohnson Services Limited | Health & social care | 2013 |
| Ptka Ltd | Real estate | 2025 |
| Ptmb Southwest Limited | Real estate | 2023 |
| Ptnm Limited | Real estate | 2022 |
| PTS - PAT Testing Solutions Ltd | Extraterritorial | 2011 |
| PTS Consultants Ltd | Information & communication | 2023 |
| PTS Consulting Services Limited | Administrative & support | 2005 |
| PTS Managment Consulting Ltd | Professional & scientific | 2011 |
| PTS Pro-Truck-Service Ltd | Wholesale & retail | 2021 |
| PTT Automotive Ltd | Wholesale & retail | 2019 |
| PUB Casino Ltd | Information & communication | 2025 |
| PUB One World Ltd | Hospitality | 2024 |
| PUB World Ltd | Hospitality | 2021 |
| Public Group Ltd | Information & communication | 2017 |
| Public Interest Investigations | Information & communication | 2005 |
| Public Interest Productions Limited | Information & communication | 2022 |
| Public Ltd | Information & communication | 2018 |
| Public Order Enforcement Teams Limited | Other services | 2017 |
| Public Sector Advisory Limited | Other services | 2020 |
| Public Security Ltd | Administrative & support | 2026 |
| Public Storage Services Limited | Professional & scientific | 1995 |
| Publicity Matters Limited | Information & communication | 2002 |
| Pucarelli Investments Ltd | Households | 2022 |
| Puck Bay Limited | Real estate | 2023 |
| PUD Design Limited | Information & communication | 2015 |
| Puffin & Family GIN Ltd | Wholesale & retail | 2024 |
| Puffin & PEN Ltd | Manufacturing | 2026 |
| Puffin Medical Investments Ltd | Health & social care | 2015 |
| Puffin Property Solutions Ltd | Real estate | 2025 |
| Pugspond Limited | Information & communication | 2018 |
| Puja-G Ltd | Health & social care | 2011 |
| Pukka Crush Ltd | Education | 2015 |
| Pulchra Design and Build Ltd | Construction | 2021 |
| Pullen Enterprises Ltd | Financial services | 2023 |
| Pullen Ventilations Ltd | Administrative & support | 2020 |
| Pullins (Bakers) Limited | Manufacturing | 1938 |
| Pullins Holdings Limited | Financial services | 2017 |
| Pulmolink Ltd | Wholesale & retail | 2001 |
| Pulsar Helium (UK) Ltd | Mining & quarrying | 2021 |
| Pulsar Holdings (UK) Ltd | Professional & scientific | 2021 |
| Pulse Eco Nest Properties Ltd | Real estate | 2024 |
| Pulse Enterprise Ltd | Professional & scientific | 2018 |
| Pulse Global Holdings Limited | Manufacturing | 2011 |
| Pulse Investment Management Ltd | Real estate | 2020 |
| Pulse Networking Limited | Construction | 2007 |
| Pulse Networks Limited | Information & communication | 2020 |
| Pulse Printing Products Limited | Manufacturing | 1999 |
| Pulse Roll Label Products Limited | Manufacturing | 2001 |
| Pulse Width Ltd | Manufacturing | 2023 |
| Pulsevault Ltd | Professional & scientific | 2025 |
| Pulso Partners Limited | Arts & recreation | 2026 |
| Puma Properties (South West) Limited | Real estate | 2020 |
| Puma Security Limited | Administrative & support | 2022 |
| Puma TKD Limited | Arts & recreation | 2002 |
| Pump Heating Limited | Construction | 2023 |
| Pump Wright Ltd | Construction | 2017 |
| Pumphouse Gym Ltd | Arts & recreation | 2022 |
| Pumpkin Film Productions Limited | Extraterritorial | 2022 |
| Pumpkin Interactive Ltd | Information & communication | 1999 |
| Punch Promotions (Bristol) Limited | Administrative & support | 2016 |
| Punchy VIB Ltd | Other services | 2023 |
| Pundit Investments Limited | Households | 1971 |
| Punjabveer Properties Ltd | Real estate | 2023 |
| Punk AS Funk Ltd | Other services | 2024 |
| Punk Couplings Limited | Manufacturing | 2013 |
| Punk Media Ltd | Information & communication | 2004 |
| Punkworks Ltd | Information & communication | 2024 |
| Puns Capital Ltd | Real estate | 2024 |
| Puns GAS Ltd | Construction | 2023 |
| Puns Property Services Ltd | Households | 2018 |
| Puppet Place Trust Ltd. | Arts & recreation | 1993 |
| Puppix Limited | Professional & scientific | 2024 |
| Pura Bliss Music Limited | Arts & recreation | 2023 |
| Pura Vida Care Ltd | Professional & scientific | 2025 |
| Puracore Limited | Manufacturing | 2011 |
| Puratec Ltd | Construction | 2015 |
| Purcell Production Design Limited | Information & communication | 2014 |
| Purdown Property & Development Ltd | Construction | 2026 |
| Pure Ability Ltd | Wholesale & retail | 2006 |
| Pure Alloys Ltd | Wholesale & retail | 2025 |
| Pure Electric Limited | Wholesale & retail | 2018 |
| Pure Force Cleaning Limited | Administrative & support | 2024 |
| Pure Grain Ltd | Manufacturing | 2025 |
| Pure Life Hypnobirthing Limited | Other services | 2022 |
| Pure Meat & Poultry SW Ltd | Wholesale & retail | 2018 |
| Pure Method Ltd | Manufacturing | 2026 |
| Pure Motivation Limited | Administrative & support | 1990 |
| Pure Plastics Limited | Manufacturing | 2005 |
| Pure Plumb Ltd | Construction | 2023 |
| Pure Power E Bikes Ltd | Wholesale & retail | 2026 |
| Pure Professionals Limited | Professional & scientific | 2014 |