| P. Sawyer Ltd | Education | 2013 |
| P.A.L. Carriers Limited | Real estate | 2002 |
| P.B. Glass & Glazing Limited | Manufacturing | 1995 |
| P4 Properties Ltd | Real estate | 2023 |
| P70TWO Ltd | Construction | 2025 |
| Pablos Kebab Ltd | Hospitality | 2025 |
| PAC Technical Services Limited | Information & communication | 2003 |
| Pacific Island Navigation Limited | Transport & logistics | 2003 |
| PAD Accessories Limited | Professional & scientific | 2024 |
| Paddy Hopkirk Limited | Other services | 2007 |
| Padel Galactic Ltd | Wholesale & retail | 2024 |
| Padel Movement Limited | Wholesale & retail | 2026 |
| Padfolio Limited | Real estate | 2024 |
| PAG Founders Limited | Administrative & support | 2017 |
| Paga Properties Ltd | Real estate | 2024 |
| Page & Page Contracts Limited | Construction | 2017 |
| Paguera Property Limited | Real estate | 2019 |
| PAI Media Ltd | Information & communication | 2024 |
| Paimio Properties Ltd | Real estate | 2022 |
| Paksh Ltd | Wholesale & retail | 2016 |
| PAL Beta Ltd | Real estate | 2023 |
| PAL Corporation Ltd | Financial services | 2023 |
| PAL Property Ltd | Real estate | 2023 |
| Pala Group Limited | Financial services | 2023 |
| Pala Investments Ltd | Real estate | 2020 |
| Palfrey Green Investments Ltd | Financial services | 2020 |
| Palladian Capital Limited | Construction | 2017 |
| Palm Tree Massage Ltd | Other services | 2025 |
| Palz Limited | Manufacturing | 2010 |
| Panacea Healthcare Group Holdings Limited | Professional & scientific | 2018 |
| Panacea Healthcare Holdings Limited | Professional & scientific | 2018 |
| Panacea Universal Healthcare Limited | Professional & scientific | 2018 |
| Panacea Universal Holdings Limited | Professional & scientific | 2018 |
| Pancathay Consulting Ltd | Professional & scientific | 1986 |
| Panda Bridge Limited | Information & communication | 2017 |
| Panda Household Services Limited | Construction | 2022 |
| Pandanus Solutions Limited | Information & communication | 2007 |
| Pangea Strategies Ltd | Hospitality | 2014 |
| Panic Brew Limited | Manufacturing | 2023 |
| Panic INK (Herts) Ltd | Other services | 2017 |
| Panorama Estates Corporation Limited | Real estate | 2017 |
| Pantai Lima Limited | Real estate | 2017 |
| Papa Paella Ltd | Hospitality | 2023 |
| Papa's Piri Piri Limited | Hospitality | 2018 |
| Papa's Pizza ST Albans Limited | Hospitality | 2019 |
| Papaya Technologies Ltd | Information & communication | 2022 |
| Paper Alchemy Ltd | Wholesale & retail | 2025 |
| Paper Planet Limited | Extraterritorial | 2017 |
| PAR 3 Lounge Limited | Hospitality | 2022 |
| Para Dance UK Ltd | Education | 2006 |
| Paraden AI Ltd | Information & communication | 2026 |
| Paragon Home Developments Limited | Construction | 2014 |
| Paragon Timbercraft Ltd | Construction | 2024 |
| Paragonteeth Limited | Health & social care | 2013 |
| Parametric Consulting Ltd. | Information & communication | 2018 |
| Paramount Beers and Wines Ltd | Hospitality | 2005 |
| Parc 2021 Ltd | Financial services | 2021 |
| Parc Assets Ltd | Financial services | 2021 |
| Pardon OUR Prolific T/As POP Network Ltd | Other services | 2024 |
| Pareto Thinking Ltd | Professional & scientific | 2023 |
| Pargeter Property Partnership Ltd | Construction | 2020 |
| Pariswhite Developments Limited | Construction | 2017 |
| Park DCL Ltd | Real estate | 2016 |
| Park Earls Management Limited | Households | 2017 |
| Park Estate Management Limited | Administrative & support | 1967 |
| Park Living Limited | Construction | 2011 |
| Park Lodge Residents Company (Harpenden) Limited | Households | 2005 |
| Park Mill Interiors Limited | Construction | 2026 |
| Park Street Development & Refurbishment Ltd | Construction | 2025 |
| Parkers Removals Ltd | Transport & logistics | 2024 |
| Parklands Advisors Limited | Professional & scientific | 2016 |
| Parkmead Limited | Manufacturing | 1992 |
| Parkup.Club Ltd | Information & communication | 2026 |
| Parravani's Holdings Limited | Financial services | 2016 |
| Parsons Rental Properties Limited | Real estate | 2026 |
| Parsons Services Limited | Professional & scientific | 2020 |
| Part 25 Limited | Professional & scientific | 2023 |
| Parthenon Education Limited | Education | 2023 |
| Particle Invest Ltd | Financial services | 2021 |
| Partulov Ltd | Other services | 2015 |
| Patch London Ltd | Manufacturing | 2024 |
| Patel & Mudunkotuwe Consultancy Limited | Professional & scientific | 2012 |
| Patience Mawema Ltd | Public administration | 2024 |
| Patrician Services Limited | Extraterritorial | 2023 |
| Pattern Architects Ltd | Professional & scientific | 2023 |
| Paul Boniface Services Ltd | Construction | 2013 |
| Paul Davis Fencing Academy Ltd | Arts & recreation | 2014 |
| Paul Johnson Sound Engineers Limited | Arts & recreation | 2005 |
| Paula Jane Gardens Ltd | Administrative & support | 2024 |
| Paulbprops Ltd | Information & communication | 2022 |
| Pavilion Travel Group Ltd | Administrative & support | 2026 |
| Paving & Construction Ltd | Construction | 2022 |
| Pawsome Paddles Ltd | Professional & scientific | 2021 |
| PAY AS U Stay Ltd | Real estate | 2020 |
| Paymán Operations Ltd | Administrative & support | 2015 |
| Pays International Limited | Professional & scientific | 2009 |
| Payswell Ltd | Administrative & support | 2015 |
| PB Electrical Automation Ltd | Manufacturing | 2018 |
| PBV Bradford Ltd | Hospitality | 2026 |
| PBV Kitchens Ltd | Hospitality | 2026 |