| P and P Groundworks Ltd | Construction | 2011 |
| P J Forecourt Construction Ltd | Construction | 2021 |
| P M H Training Limited | Education | 2018 |
| P S J Developments Limited | Administrative & support | 2015 |
| P Z & W Limited | Information & communication | 1994 |
| P&Dh Ltd | Information & communication | 2015 |
| P&P Cybersecurity Ltd | Information & communication | 2021 |
| P.C.M.R. Holdings Ltd | Financial services | 2025 |
| P.H. and L.C. Jowett Limited | Agriculture & fishing | 1986 |
| P.M.A. Property Maintenance Limited | Construction | 2020 |
| P413 Ltd | Real estate | 2025 |
| Paddock View Residents Management Company Limited | Households | 2014 |
| Paddy Roche Agricultural Services Limited | Administrative & support | 2009 |
| Padel for Anyone? Ltd | Arts & recreation | 2024 |
| Padson Group Ltd | Other services | 2010 |
| Paint Systems Services Limited | Manufacturing | 2017 |
| PAL Trustees Limited | Professional & scientific | 1982 |
| Palette and Pasture Limited | Manufacturing | 2018 |
| Palladian Products Limited | Wholesale & retail | 1983 |
| Pallard Contracts Limited | Construction | 1986 |
| Pallatia Court Management Company Limited | Households | 2014 |
| Pallisade Management Company Limited | Households | 1996 |
| Palmer Image Processing Ltd | Information & communication | 2025 |
| Palmer's Surveyors Ltd | Professional & scientific | 2008 |
| Palmeraie DES Cygnes UK Limited | Administrative & support | 2006 |
| Panarc International Limited | Professional & scientific | 1978 |
| Panarox Healthcare Ltd | Health & social care | 2016 |
| Panchaea Ltd | Wholesale & retail | 2020 |
| Panthera Dance Company Limited | Arts & recreation | 2018 |
| Paoli Francine Limited Partnership | | 2006 |
| Papaya Retail Limited | Wholesale & retail | 2026 |
| Paper Hearts Publishing Limited | Information & communication | 2025 |
| Parachuting Aircraft Limited | Administrative & support | 2009 |
| Parachuting Caravan Leasing Limited | Transport & logistics | 2016 |
| Paragon Property Management and Lettings Ltd. | Real estate | 2011 |
| Parallax Commodities Limited | Administrative & support | 2019 |
| Parallel Electrical, Plumbing & Heating Ltd | Construction | 2023 |
| Parc Llandaf Management Company Limited | Households | 2023 |
| Parc Llandaf Residents Management Company Limited | Households | 2025 |
| Parched Events Ltd | Hospitality | 2025 |
| Parcour Consulting Ltd | Administrative & support | 2014 |
| Parctech Solutions Ltd | Information & communication | 2019 |
| Parental Alliance for Choice in Education(The) | Other services | 1985 |
| Parish Ltd | Construction | 2016 |
| PARISHAIR105 Online Ltd | Real estate | 2024 |
| Parisian Court at Rosedale Park Management Company Limited | Households | 2022 |
| Park House (Leeds) Management Limited | Households | 2002 |
| Park House Mews Management Company Limited | Households | 1987 |
| Park Place (Corsham) Management Company Limited | Households | 2017 |
| Parker Bullen LLP | | 2009 |
| Parker Bullen Services Limited | Other services | 2009 |
| Parkera UK Ltd | Professional & scientific | 2025 |
| Parkgate House Freehold Limited | Households | 2018 |
| Parking London Limited | Transport & logistics | 2018 |
| Parklands Llanishen Management Company Limited | Households | 2006 |
| Parklands Manor Management Company Limited | Households | 2019 |
| Parkside (Cosham) Management Company Limited | Households | 2014 |
| Parktavernspub Ltd | Hospitality | 2026 |
| Parkwater Investments (2018) Limited | Construction | 2016 |
| Pars Dental Supplies Ltd | Other services | 2017 |
| Parson Associates Limited | Health & social care | 2015 |
| Parsonage Equity Ltd | Professional & scientific | 2025 |
| Parsons Family Investments Ltd | Real estate | 2026 |
| Parsons Farming Limited | Agriculture & fishing | 2012 |
| Parsons Green Preparatory School Limited | Administrative & support | 2014 |
| Partridge Screeding Limited | Construction | 2013 |
| Partridge Way Residents Company Limited | Households | 1999 |
| Pashley Meadow Management Company Limited | Households | 2023 |
| Passmaster Driving School Limited | Education | 2015 |
| Pastures Wood (Crawley Down) Management Company Limited | Households | 2015 |
| Patel Oils Limited | Other services | 2015 |
| PATH2MARKET Ltd | Professional & scientific | 2014 |
| Pathfinder Place (Melksham) Management Company Limited | Real estate | 2019 |
| Patient Path Secure Transport Ltd | Health & social care | 2025 |
| Patina People CIC | Arts & recreation | 2024 |
| Patinspect Limited | Professional & scientific | 2017 |
| Patties Direct Ltd | Wholesale & retail | 2025 |
| Paul & Asanga Limited | Manufacturing | 2009 |
| Paul Burke Engineering Services Ltd | Professional & scientific | 2023 |
| Paul Frampton Design Ltd | Manufacturing | 2018 |
| Paul FRY Laminations Limited | Administrative & support | 2026 |
| Paul Kent Ltd | Construction | 2016 |
| Paul Rhys Davies Spinal Surgeon Limited | Health & social care | 2021 |
| Paul Roberts Writing Limited | Professional & scientific | 2008 |
| Paul Shelley Plant Services Ltd | Construction | 2006 |
| Paul Stevens Architecture Limited | Professional & scientific | 2010 |
| Paul Winter Consulting Ltd | Professional & scientific | 2014 |
| Paul's Aerials Limited | Other services | 2002 |
| Paving Concepts PVT Limited | Wholesale & retail | 2023 |
| PAW Pals Salisbury Limited | Other services | 2014 |
| PAW Trading Co Ltd | Wholesale & retail | 2018 |
| Paws Meadow Limited | Other services | 2024 |
| Paxton Business Centre Management Company Limited | Real estate | 2000 |
| Payments Publishing Limited | Information & communication | 2023 |
| Paypertray Limited | Hospitality | 2012 |
| PBD Nails Ltd | Other services | 2023 |
| PCR Property Limited | Real estate | 2018 |
| Pcs-Appscons Limited | Information & communication | 2010 |
| Pdjd Limited | Financial services | 2011 |
| PDK MOT Centre Limited | Wholesale & retail | 2022 |