| Papadi Ltd | Health & social care | 2012 |
| Papchem International UK Limited | Wholesale & retail | 2024 |
| Paperback INK Ltd | Hospitality | 2014 |
| Papi Chulo London Ltd | Hospitality | 2023 |
| Papillon Ribbon & BOW (UK) Ltd. | Wholesale & retail | 1996 |
| Pappedbooths Ltd | Professional & scientific | 2024 |
| PAR Design Limited | Administrative & support | 2003 |
| PAR Excellence Golf Lifestyle Services Ltd | Arts & recreation | 2017 |
| Paracha Traders Ltd | Wholesale & retail | 2023 |
| Paradigm Biopharmaceuticals Limited | Health & social care | 2025 |
| Paradis Productions Ltd | Administrative & support | 2011 |
| Paradise Travel Ltd | Administrative & support | 2022 |
| Paragon Cars London Limited | Wholesale & retail | 2011 |
| Paragon International Systems Limited | Professional & scientific | 1999 |
| Paragon New Homes Limited | Construction | 2014 |
| Paragon Tech Solutions Ltd | Information & communication | 2019 |
| Parakar UK Limited | Administrative & support | 2022 |
| Param CS Ltd | Construction | 2013 |
| Parameswary Property Management Ltd | Real estate | 2020 |
| Paramount Apartments Limited | Real estate | 2015 |
| Paramount Procurement Limited | Transport & logistics | 1985 |
| Paramount Window Cleaning Services Limited | Administrative & support | 2013 |
| Parana Cleaning Limited | Administrative & support | 2025 |
| Parcelmind Ltd | Wholesale & retail | 2026 |
| Parchment Limited | Information & communication | 2021 |
| Pardelta Limited | Wholesale & retail | 2025 |
| Parekh Corporation Ltd | Real estate | 2019 |
| Parekh Services Ltd | Construction | 2023 |
| Parens Investments Limited | Real estate | 2023 |
| Paresh Holdings Ltd | Real estate | 2024 |
| Paresh Shah Limited | Professional & scientific | 2010 |
| Pareto Consulting Limited | Information & communication | 2016 |
| Parfums Vogue Limited | Administrative & support | 1985 |
| Parikshit Associate Ltd | Wholesale & retail | 2025 |
| Parin Retail Ltd | Wholesale & retail | 2025 |
| Paripus Land Ltd | Real estate | 2017 |
| Paripus Limited | Administrative & support | 2016 |
| Pariraj Global Ltd | Real estate | 2022 |
| Parisha Acharya T/A DR. Paris Limited | Health & social care | 2012 |
| Parisha Ltd | Wholesale & retail | 2025 |
| Parishatech Limited | Information & communication | 2017 |
| Parjay Investments Limited | Real estate | 2018 |
| Parjay Limited | Real estate | 2016 |
| Park Accounting Limited | Professional & scientific | 2026 |
| Park Court Limited | Households | 1982 |
| Park Healthcare Limited | Health & social care | 1984 |
| Park House Practice Limited | Health & social care | 2010 |
| Park View Estate (Woking) Limited | Households | 1982 |
| Park View Management Company (SW19 5NG) Limited | Professional & scientific | 2020 |
| Park West (Hanwell) Management Company Limited | Households | 1986 |
| Parkalot Ltd | Transport & logistics | 2024 |
| Parkar Events Services Limited | Hospitality | 2026 |
| Parkchapel Ltd | Construction | 2001 |
| Parke Bree Ltd | Real estate | 2022 |
| Parkeager Limited | Professional & scientific | 1992 |
| Parker White Group Limited | Financial services | 2026 |
| Parker White Limited | Construction | 2009 |
| Parker White Properties (NTH) Limited | Real estate | 2026 |
| Parker White Properties Limited | Real estate | 2016 |
| Parker White Services Limited | Professional & scientific | 2025 |
| Parker Wood Associates Limited | Professional & scientific | 2011 |
| Parkeridge Limited | Professional & scientific | 2007 |
| Parkers Residential Stanmore Ltd | Real estate | 2025 |
| Parkfield Care Limited | Real estate | 2017 |
| Parkin Media Limited | Information & communication | 2016 |
| Parkland Heating & Plumbing Ltd | Construction | 2015 |
| Parklands (Northampton) Limited | Wholesale & retail | 1997 |
| Parklane Management Services Ltd | Professional & scientific | 2017 |
| Parkonomy Limited | Information & communication | 2015 |
| Parkrow London Ltd | Real estate | 2022 |
| Parksouth UK Limited | Professional & scientific | 2025 |
| Parkstates Ltd | Real estate | 2012 |
| Parkview Residents (Eastbury Road) Limited | Households | 1971 |
| Parkway 38 Limited | Administrative & support | 2002 |
| Parlimetrics Group Ltd | Information & communication | 2025 |
| Parmar & Partners Properties Limited | Real estate | 2019 |
| Parmar and Sons Property Limited | Real estate | 2016 |
| Parmar Designers Ltd | Professional & scientific | 2019 |
| Parmar Housing Limited | Real estate | 2024 |
| Parmar Property London Limited | Construction | 2016 |
| Parmar Property Management Limited | Real estate | 2015 |
| Parmar Property Partners Limited | Financial services | 2020 |
| Parmarit Yacht Consultancy Ltd. | Professional & scientific | 2020 |
| Parmi Holdings Ltd | Financial services | 2021 |
| Parmin Ltd | Real estate | 2023 |
| Parmu Storage Limited | Real estate | 2024 |
| Parnell Capital Ltd | Financial services | 2014 |
| Parohia Harlow Ltd | Other services | 2025 |
| Parr Accountancy Services Ltd | Professional & scientific | 2022 |
| Parr Blackpool Ltd | Real estate | 2024 |
| Parrot Builders Limited | Construction | 2015 |
| Parrot Holdings Limited | Real estate | 2025 |
| Parry-Jones Ltd | Construction | 2012 |
| Parson Street Management Limited | Households | 2000 |
| Parsons Table Company Limited(The) | Other services | 1986 |
| Parth Investments Ltd | Real estate | 2025 |
| Parth Services Limited | Wholesale & retail | 2003 |
| Partnership Mortgages Ltd | Financial services | 2004 |
| Party and Play Events Ltd | Other services | 2018 |
| Party App Ltd | Information & communication | 2019 |