| Park and Clean Ltd | Administrative & support | 2018 |
| Park Road Projects Ltd | Construction | 2024 |
| Park Valet Ltd | Transport & logistics | 2011 |
| Parker Construction & Electrical Ltd | Construction | 2021 |
| Parkfield Estates (UK) Limited | Real estate | 2002 |
| Parkfield Estates Chessington Limited | Real estate | 2026 |
| Parkhouse Finance Ltd | Financial services | 2020 |
| Parnhams Property Consultants Ltd | Real estate | 2013 |
| Parstec Limited | Real estate | 2003 |
| Partica London Limited | Wholesale & retail | 2019 |
| Partnur Limited | Administrative & support | 2023 |
| Partridge Developments | | 1987 |
| Pascal B. Hair Studio Limited | Other services | 2017 |
| Passion Incorporated Group Ltd | Professional & scientific | 2019 |
| Passion Incorporated Ltd | Professional & scientific | 2013 |
| Patolia Properties Ltd | Real estate | 2020 |
| Pattern Freight Services Ltd | Transport & logistics | 2023 |
| Pattinson Green Limited | Real estate | 2009 |
| Patton Environmental Services UK Ltd | Water & waste | 2005 |
| Paul Abbott Electrical Services Ltd | Construction | 2026 |
| Paul Clarke Services Limited | Households | 2008 |
| Paul H Consulting Ltd | Professional & scientific | 2023 |
| Paul Meakin Estate Agents Limited | Real estate | 2002 |
| Paulbproperty Ltd | Real estate | 2020 |
| Paulo's Soul&Heart Ltd | Wholesale & retail | 2023 |
| Pawi Tasty Food Ltd | Hospitality | 2023 |
| Paws & Abodes Ltd | Agriculture & fishing | 2025 |
| Paxia UK Ltd | Information & communication | 2019 |
| Paxton-Nova Ltd | Real estate | 2025 |
| Pazhar Zvezdy Ltd. | Construction | 2018 |
| Pazzia Limited | Hospitality | 2011 |
| PB Associates (UK) Ltd | Professional & scientific | 2023 |
| PB Associates Group Ltd | Extraterritorial | 2022 |
| PB Associates Limited | Professional & scientific | 2019 |
| PB Builder Ltd | Construction | 2019 |
| PB Scaffolding Service Ltd | Construction | 2011 |
| PBC (Project Building & Construction) Ltd | Construction | 2022 |
| PBV Ltd | Wholesale & retail | 2026 |
| PC Rail Limited | Administrative & support | 2024 |
| PCB Plumbing & Heating Ltd | Extraterritorial | 2012 |
| Pcmw Contract Services Ltd | Administrative & support | 2019 |
| Pdfminer Limited | Information & communication | 2024 |
| PDS Bikes Ltd | Manufacturing | 2025 |
| PDS Cycle Ltd | Manufacturing | 2025 |
| Peace Persons Ltd | Construction | 2024 |
| Peaches & Co UK Limited | Real estate | 2026 |
| Peaches Close (Cheam) Garage Management Limited | Real estate | 1987 |
| Peaches Court (Cheam) Limited | Households | 1992 |
| Peak Agent AI Limited | Information & communication | 2025 |
| Peak Health Strategies Ltd | Health & social care | 2024 |
| Pearl Car Hire Ltd | Administrative & support | 2015 |
| Pearson Electrical Services Ltd | Construction | 2021 |
| Pebble Ridge Ltd | Hospitality | 2023 |
| PEC International Limited | Professional & scientific | 1993 |
| Peck Consultancy Ltd. | Transport & logistics | 2019 |
| Pegasus Court (Sutton) Management Company Limited | Households | 2003 |
| Pegasus Court Freehold Company Limited | Households | 2004 |
| Peiris Productions Ltd | Arts & recreation | 2022 |
| Peke Technology Limited | Wholesale & retail | 2021 |
| Peks Limited | Construction | 2008 |
| Pelican Roofing and Building Limited | Construction | 2023 |
| Pelle Bites Limited | Hospitality | 2012 |
| Pembroke 7 Ltd | Arts & recreation | 2018 |
| Pendulum IT Ltd | Information & communication | 2014 |
| Pendulum Ventures Ltd | Real estate | 2020 |
| Penhaligon's Recruitment Ltd | Administrative & support | 2014 |
| Penned Productions Ltd | Information & communication | 2026 |
| Penteract Limited | Information & communication | 2023 |
| Penuel Consulting Limited | Manufacturing | 2000 |
| Percival Farm Ltd | Agriculture & fishing | 2024 |
| Perfect Ambience Ltd | Real estate | 2020 |
| Perfect Built Ltd | Construction | 2013 |
| Perfect in Ltd | Construction | 2004 |
| Perfect Smile P&A Holding Ltd | Health & social care | 2020 |
| Perfectair Limited | Manufacturing | 2011 |
| Perfectionair Ltd | Energy | 2021 |
| Perfectly Focused Ltd | Professional & scientific | 2008 |
| Performance Car Finance Limited | Professional & scientific | 2007 |
| Peritus Technologies Limited | Wholesale & retail | 2014 |
| Perivale Business Centre Limited | Real estate | 2017 |
| Perivale Properties Ltd | Financial services | 2018 |
| Perizza Ltd | Hospitality | 2023 |
| Permutit Boby Limited | Water & waste | 2007 |
| Persevera AI Ltd | Information & communication | 2023 |
| Peshtan Developments Ltd | Real estate | 2024 |
| Pests BEE Gone Ltd | Administrative & support | 2025 |
| Pet Supplies Galore Ltd | Wholesale & retail | 2019 |
| Peter Andrews Wood Floor Specialist Limited | Construction | 2015 |
| Peter COX Preservation Limited | Professional & scientific | 1963 |
| Peter Manduell and Company Financial Services Limited | Financial services | 1994 |
| Peter Ostling Autocentre Ltd | Wholesale & retail | 2025 |
| Peter Ostling Automotive Ltd | Wholesale & retail | 2015 |
| Peter Oxendale Music Services Limited | Arts & recreation | 2011 |
| Peter Ralph Ltd | Administrative & support | 2016 |
| Peter RAY Design Limited | Construction | 2008 |
| Peter Veronica Limited | Health & social care | 2013 |
| Peter's Motors Ltd | Wholesale & retail | 2020 |
| Peter's Nursery Limited | Real estate | 1962 |
| Peters House Freehold Company Limited | Professional & scientific | 2022 |
| Peters House Management Company Limited | Households | 2014 |