| Propainters London Limited | Construction | 2021 |
| Proper Building Renovation Ltd | Construction | 2023 |
| Proper-T Investments Ltd | Real estate | 2020 |
| Properties J Ltd | Real estate | 2016 |
| Property Development (Cranford) Ltd | Real estate | 2018 |
| Property+Padel Ltd | Professional & scientific | 2025 |
| Propertywise Estates UK Limited | Real estate | 2026 |
| Propipe Heating and Electric Ltd | Construction | 2019 |
| Propitious Services Ltd | Other services | 2026 |
| Pros Construction Ltd | Construction | 2026 |
| Prosap Corporation Limited | Information & communication | 2011 |
| Prosys Manufacturing Consultancy Ltd | Professional & scientific | 2024 |
| Protec C Ltd. | Administrative & support | 2014 |
| Protect Financial Limited | Financial services | 2015 |
| Proton Tyres Ltd | Wholesale & retail | 2024 |
| Protonsoft Solutions Ltd | Information & communication | 2013 |
| Provaller Services Ltd | Wholesale & retail | 2023 |
| Provent Hygiene Solutions Ltd | Administrative & support | 2024 |
| Provesters Limited | Real estate | 2013 |
| Provesters Management Limited | Hospitality | 2025 |
| Providence Accounting Ltd | Professional & scientific | 2022 |
| Providing Care 24/7 Limited | Health & social care | 2025 |
| Proxpect Group Ltd | Wholesale & retail | 2020 |
| PRP Retail Ltd | Wholesale & retail | 2026 |
| PRT4U Ltd | Construction | 2023 |
| Prutm Ltd | Construction | 2026 |
| PRV Design Ltd | Construction | 2007 |
| PRV1 Ltd | Information & communication | 2026 |
| PS London Love... Ltd | Wholesale & retail | 2017 |
| PS Traders Ltd | Wholesale & retail | 2023 |
| PSB Electrical Limited | Construction | 2019 |
| PSD Hounslow Ltd | Real estate | 2025 |
| PSI Web Tech Limited | Wholesale & retail | 2003 |
| PSJ Builders Ltd | Construction | 2022 |
| Psjewellers Ltd | Wholesale & retail | 2025 |
| Pslv Family Ltd | Real estate | 2022 |
| Psrk Limited | Construction | 2026 |
| PSS IT Solutions Ltd | Information & communication | 2021 |
| PSV Construction Ltd | Construction | 2023 |
| Psvin Limited | Wholesale & retail | 2025 |
| Psyki Ltd | Health & social care | 2023 |
| Ptadz Limited | Other services | 2020 |
| Ptmk Limited | Wholesale & retail | 2010 |
| PUB Ceylon Limited | Hospitality | 2023 |
| Public Health by Design Limited | Health & social care | 2013 |
| PUD CUP Limited | Hospitality | 2024 |
| Puffins Global Ltd | Wholesale & retail | 2026 |
| Pullipuk Ltd | Wholesale & retail | 2020 |
| Pulse Estates Garages Ltd | Real estate | 2019 |
| Pulse Estates Ltd | Real estate | 2024 |
| Pulse Market Ltd | Wholesale & retail | 2024 |
| Pulse N' Paint Ltd | Construction | 2022 |
| Pulse Smarttech Ltd | Other services | 2019 |
| Puneet Food & Wine Ltd | Wholesale & retail | 2025 |
| Punjab Homes Slough Ltd | Real estate | 2025 |
| Punjab Properties Ltd | Real estate | 2025 |
| Punjabi Breakfast Limited | Hospitality | 2025 |
| Punjabi Diamonds Ltd | Wholesale & retail | 2025 |
| Punjabi Lounge Ltd | Hospitality | 2026 |
| Punjabi Taste Limited | Hospitality | 2018 |
| Punkalasa UK Ltd | Construction | 2015 |
| Purajit Constructions Ltd | Construction | 2021 |
| Purbury Limited | Information & communication | 2024 |
| Purcee Productions Ltd | Information & communication | 2025 |
| Pure Cleaning Services Ltd | Administrative & support | 2024 |
| Pure Import and Export Ltd | Wholesale & retail | 2024 |
| Pure Silk Path Limited | Wholesale & retail | 2026 |
| Pure Tiles and Carpets Ltd | Wholesale & retail | 2024 |
| Pureness Investments Limited | Real estate | 2023 |
| Purple Cherry Investments Ltd | Real estate | 2018 |
| Purple Staffing Solutions Ltd | Other services | 2019 |
| Purple Tech Limited | Wholesale & retail | 2025 |
| Purser Films Ltd | Information & communication | 2025 |
| Pushups Coffee Limited | Hospitality | 2026 |
| PVK1 Ltd | Construction | 2026 |
| Pvnr Associates Limited | Real estate | 2023 |
| PVR Goods Ltd | Wholesale & retail | 2017 |
| PYL Traders Ltd | Wholesale & retail | 2025 |
| Pyramidstrade Ltd | Hospitality | 2017 |
| Pyvsearch Ltd | Professional & scientific | 2023 |
| Q and a Trade Ltd | Wholesale & retail | 2023 |
| Q&J Tech Ventures Limited | Information & communication | 2026 |
| QA Fusion Ltd. | Administrative & support | 2013 |
| QA Point Ltd | Information & communication | 2012 |
| Qace Holdings Ltd | Wholesale & retail | 2026 |
| Qadiri Ltd | Real estate | 2018 |
| Qalyup Ltd | Health & social care | 2024 |
| Qandala Ltd | Transport & logistics | 2024 |
| Qantas Cabin Crew (UK) Limited | Administrative & support | 2004 |
| Qaris Tech Ltd | Information & communication | 2024 |
| Qayam Ltd | Wholesale & retail | 2020 |
| QCF Construction and Management Ltd | Construction | 2019 |
| Qclients Limited | Other services | 2020 |
| Qelyra Beauty LAB Ltd | Wholesale & retail | 2026 |
| QH Cranford Ltd | Hospitality | 2023 |
| Qiwi Limited | Information & communication | 2016 |
| QM Quality Ltd | Wholesale & retail | 2020 |
| QP Accountants Ltd | Professional & scientific | 2013 |
| Qreverse.Uk Ltd | Wholesale & retail | 2026 |
| QS Learning Limited | Education | 2017 |