| OUR Local Garage Limited | Wholesale & retail | 2020 |
| OUT West Properties Ltd | Real estate | 2023 |
| Outbox Ltd | Construction | 2020 |
| Ovenclean (North London) Limited | Administrative & support | 2007 |
| Overtones 2 Tune Limited | Professional & scientific | 2010 |
| OZ ER Investment SPV Ltd | Real estate | 2025 |
| OZ YBK Holding Ltd | Financial services | 2025 |
| Ozar Lenetzrochim Limited | Other services | 2010 |
| Ozdemir Property Group Ltd | Real estate | 2025 |
| Ozinga Productions Ltd | Other services | 2014 |
| Ozmeon Ltd | Hospitality | 2025 |
| Ozzi Property Limited | Real estate | 2021 |
| P & P Metalia Builders Ltd | Construction | 2014 |
| P B Design Build & Supply Ltd | Construction | 2026 |
| P C M Motors Ltd | Wholesale & retail | 2014 |
| P J Ludlow Builder Limited | Construction | 2004 |
| P Jordan & Sons Limited | Construction | 2016 |
| P&P Property Investments Limited | Real estate | 2015 |
| P.S.G. Down to Earth Limited | Administrative & support | 2022 |
| P2P Property Investments Ltd | Real estate | 2024 |
| Pachas Aesthetics Limited | Other services | 2023 |
| Pada Cladding Ltd | Construction | 2018 |
| Palette Beauty Limited | Other services | 2024 |
| Palit Ltd | Real estate | 2022 |
| Palpable Technologies Limited | Information & communication | 2025 |
| PAM London Ltd | Construction | 2022 |
| Pandp Steeple Limited | Professional & scientific | 2021 |
| Pangea Property Group Ltd | Real estate | 2023 |
| Panorama Letting Investment Ltd | Real estate | 2023 |
| Paolo M Investments Ltd | Financial services | 2023 |
| Paragon Carpet Cleaning Ltd | Administrative & support | 2014 |
| Parismit & Co (UK) Limited | Transport & logistics | 2007 |
| Parkhurst Road Management Company Limited | Real estate | 2020 |
| Parkstone Global Properties Ltd | Real estate | 2025 |
| Parrilla Gaucha UK Limited | Wholesale & retail | 2015 |
| Parts Market Limited | Wholesale & retail | 2020 |
| Pashn Limited | Professional & scientific | 2022 |
| Patpals Lions Ltd | Households | 2025 |
| Patrice Cares for YOU Ltd | Health & social care | 2023 |
| Paul Down to Earth Limited | Administrative & support | 2003 |
| Paul Smith Glory Shirts Ltd | Manufacturing | 2016 |
| Paul Zeni Couture Limited | Manufacturing | 2020 |
| Pauline Olson Limited | Wholesale & retail | 2019 |
| Pavilion Toys Ltd | Wholesale & retail | 2024 |
| Pavillion Plaza Cafe Ltd | Hospitality | 2018 |
| Paymentap Ltd | Financial services | 2024 |
| Paymentap Services Limited | Financial services | 2025 |
| Payroll AS YOU Go Limited | Other services | 2016 |
| PAZ Trading Limited | Administrative & support | 2019 |
| Pcch Land Limited | Financial services | 2022 |
| PCH BRO Limited | Construction | 2012 |
| PCJ Operational Support Services Ltd | Construction | 2007 |
| PCL Electrical Ltd | Construction | 2023 |
| PCT Middle East Limited | Other services | 2016 |
| PE Silverback Ltd | Information & communication | 2020 |
| Pear Investments Limited | Real estate | 2015 |
| Pebble Links Ltd | Other services | 2019 |
| Peer'D UP Ltd | Education | 2026 |
| Peeredge Limited | Wholesale & retail | 1985 |
| Pegas Supply Ltd | Wholesale & retail | 2025 |
| Peleg Consulting Limited | Professional & scientific | 2021 |
| Pelham Pilates Limited | Arts & recreation | 2019 |
| People 4 Hire Ltd | Administrative & support | 2019 |
| People Workforce Solutions Ltd | Administrative & support | 2025 |
| Perceptron Group Ltd | Manufacturing | 2024 |
| Pereira Grosso Properties Ltd | Real estate | 2022 |
| Perfect Design London Limited | Professional & scientific | 2015 |
| Perfumes Logistics & Distribution Limited | Wholesale & retail | 2017 |
| Perlman Estates Limited | Real estate | 2020 |
| Permitted Developments Investments NO 14 Limited | Real estate | 2020 |
| Permitted Developments Investments NO 4 Ltd | Real estate | 2016 |
| Permkill Limited | Other services | 2016 |
| Personal Box Office Service Limited | Administrative & support | 2007 |
| Personal Numbers Ltd | Wholesale & retail | 2009 |
| Pery Properties Investment Limited | Real estate | 2011 |
| Peter NAY Heating Limited | Construction | 2009 |
| Peterbyte Ltd | Information & communication | 2019 |
| Petros Limited | Professional & scientific | 2010 |
| PF Cleaning Ltd | Administrative & support | 2025 |
| PH Portfolio Limited | Real estate | 2022 |
| Phable Ltd. | Professional & scientific | 2016 |
| Pharmkg Ltd | Wholesale & retail | 2023 |
| PHC (Commercial) Limited | Administrative & support | 2015 |
| PHC Health Care Ltd | Health & social care | 2015 |
| Philia Consulting Ltd | Financial services | 2024 |
| Philipcompany Limited | Transport & logistics | 2016 |
| Philippou INV LLP | | 2022 |
| Philippou Property Investments Ltd | Real estate | 2022 |
| Phoenix Aukin Ltd | Information & communication | 2025 |
| Phoenixlux Ltd | Wholesale & retail | 2021 |
| Photon Hunters Limited | Real estate | 2025 |
| Piaz Limited | Hospitality | 2024 |
| Picked Careers Limited | Administrative & support | 2024 |
| Pier Way Management Company Limited | Real estate | 2021 |
| Piercegas Engineering Limited | Construction | 2025 |
| Pigeon Print Limited | Manufacturing | 2025 |
| Pikker Retail Limited | Wholesale & retail | 2016 |
| Pimeks UK Ltd | Construction | 2022 |
| Pina & Asan Property Ltd | Real estate | 2021 |
| Pine Delicatessen Limited | Wholesale & retail | 2025 |