| Pegasus Maintenance Group Limited | Construction | 2025 |
| PEL Roofing Services Ltd | Construction | 2014 |
| Pelotazos Ltd | Arts & recreation | 2026 |
| Pels International Skincare and Beauty Ltd | Other services | 2019 |
| PEN and Pencil Ltd | Professional & scientific | 2019 |
| Pendred Innovations Ltd | Wholesale & retail | 2018 |
| Pendulum Legal Consultancy Ltd | Professional & scientific | 2014 |
| Penguin Cold Caps Machines Ltd | Manufacturing | 2026 |
| Penguin Cold Caps Therapy Ltd | Manufacturing | 2026 |
| Penguin Cold Caps Worldwide Limited | Manufacturing | 2026 |
| Penn Development Consultancy Limited | Professional & scientific | 2010 |
| People Powered Delivery Ltd | Transport & logistics | 2023 |
| Peoplewise Technologies Ltd | Information & communication | 2026 |
| PEP Beauty Ltd | Other services | 2026 |
| Pepmo Properties Limited | Real estate | 2016 |
| Perafs Limited | Health & social care | 2013 |
| Percival & Sons Ltd | Professional & scientific | 2024 |
| Perfect Blue Holidays Limited | Administrative & support | 2010 |
| Perfect Paving Limited | Administrative & support | 2003 |
| Perko Prints Ltd | Wholesale & retail | 2023 |
| Perris LLP | | 2023 |
| Persist Physio Ltd | Health & social care | 2025 |
| Person Focused Residential Plus Limited | Health & social care | 2023 |
| Peta Alana Limited | Other services | 2015 |
| Petal & Stone Limited | Administrative & support | 2022 |
| Petas Security Ltd | Administrative & support | 2019 |
| Peter Golebiowski Electrical Ltd | Construction | 2016 |
| Peter Lineen Ltd Limited | Professional & scientific | 2025 |
| Peter's Driving School Limited | Education | 2022 |
| Peter's Windows Ltd | Construction | 2023 |
| Peterjohn Holdings Limited | Financial services | 2017 |
| Petersham Drive Management Ltd. | Households | 1982 |
| Petleys Residents Limited | Real estate | 2020 |
| Petray IT Media Limited | Professional & scientific | 2025 |
| Petrit Demushi Stonemasons Limited | Construction | 2013 |
| Pette Street Food and Catering Ltd | Wholesale & retail | 2019 |
| Petts Wood Bakery Limited | Hospitality | 2016 |
| Petts Wood DRY Cleaning Ltd | Other services | 2025 |
| Petts Wood Garden Rooms Ltd | Construction | 2024 |
| Petts Wood Nails and Beauty Ltd | Other services | 2024 |
| Petts Wood Nails Ltd | Other services | 2025 |
| Petts Wood Plumbing & Tiling Limited | Construction | 2016 |
| Petts Wood Store Ltd | Wholesale & retail | 2019 |
| Petts Wood Wine UK Ltd | Wholesale & retail | 2017 |
| Pettswood Design Ltd | Construction | 2019 |
| Pettswood Tiling Ltd. | Construction | 2014 |
| PG Advisors Ltd | Professional & scientific | 2023 |
| PG Consulting PTY Limited | Education | 2025 |
| PG Jewelery & Gift Shop Ltd | Manufacturing | 2024 |
| PG48 Bromley Limited | Households | 2013 |
| Pgak Ortho Ltd | Real estate | 2012 |
| PGC Associates Ltd | Professional & scientific | 2024 |
| Pgrcj Ltd | Real estate | 2020 |
| PGS Cleaning Services Limited | Administrative & support | 2017 |
| PGS Landscape Services Ltd | Administrative & support | 2021 |
| Pharma by Nature Ltd | Wholesale & retail | 2019 |
| Pharmabotics Limited | Manufacturing | 1998 |
| Pharmatwins Ltd | Professional & scientific | 2011 |
| Phase 4 (Southern) Limited | Energy | 2017 |
| Phenom Ltd | Financial services | 2024 |
| PHG Kent Ltd | Real estate | 2025 |
| Phil Hyland Limited | Other services | 2011 |
| Philip Long Limited | Financial services | 2020 |
| Philip Nolan Accountants ( Edinburgh ) Ltd | Professional & scientific | 2025 |
| Philip Nolan Ltd | Professional & scientific | 2019 |
| Philkiki Ltd | Real estate | 2025 |
| Phillip Andrews Limited | Wholesale & retail | 2007 |
| Phillipa B&B Limited | Hospitality | 2014 |
| Phillips Media Limited | Information & communication | 1999 |
| Phoebe Rumble Equestrian Ltd | Agriculture & fishing | 2025 |
| Phoenix Early Learners Limited | Education | 2025 |
| Phoenix Logis Limited | Construction | 2023 |
| Photog Limited | Wholesale & retail | 2017 |
| Photonic Universe Ltd | Wholesale & retail | 2011 |
| PIA International Ltd | Wholesale & retail | 2020 |
| Piaggio Limited | Wholesale & retail | 1992 |
| Piano Creative Services Limited | Administrative & support | 2011 |
| PIANO4BEGINNERS Limited | Education | 2023 |
| Piccolo Italian Sourdough Pizza Ltd | Hospitality | 2023 |
| Pickd Sports Ltd | Information & communication | 2026 |
| Pickering Management Limited | Households | 2013 |
| Pickettandbosch Carpentry Ltd | Construction | 2012 |
| Pickleball Games UK Limited | Arts & recreation | 2023 |
| Pickleball Pro UK Limited | Other services | 2023 |
| Piece of Art Ltd | Wholesale & retail | 2023 |
| Piermont Goldman Klein Limited | Real estate | 2025 |
| PIF Club Ltd | Education | 2025 |
| PIG Productions Ltd | Information & communication | 2022 |
| Pila Books Limited | Information & communication | 2012 |
| Pilates Reform Ltd | Arts & recreation | 2023 |
| Pilates Reform Woolwich Limited | Arts & recreation | 2024 |
| Pilates With Julie (Kent) Limited | Health & social care | 2013 |
| Pilkington Lifts Limited | Manufacturing | 2016 |
| Pinc Square Limited | Construction | 2015 |
| Pinden Limited | Mining & quarrying | 2004 |
| Pinder Developments Co. (Chislehurst) Limited | Real estate | 1973 |
| Pineridge Development Project Ltd | Construction | 2023 |
| Pinewood Electrical Controls Limited | Manufacturing | 2013 |
| Pink Monkey Ltd | Wholesale & retail | 2025 |
| Pink Personnel Limited | Administrative & support | 2025 |