| Prosoh Limited | Manufacturing | 2023 |
| Prosource Consultancy Ltd | Information & communication | 2023 |
| Prosperty Infra UK Limited | Construction | 2023 |
| Prospira Estates Ltd | Real estate | 2024 |
| Prosteck Ltd | Information & communication | 2011 |
| Prostuffuk Ltd | Wholesale & retail | 2025 |
| PROTECH9 Limited | Construction | 2019 |
| Protection 1 Security Solutions UK Ltd | Administrative & support | 2015 |
| Protection One Security Systems UK Ltd | Administrative & support | 2011 |
| Protivus Ltd | Real estate | 2025 |
| Protocol Office Limited | Manufacturing | 1991 |
| Protouch Foam Valeting Ltd | Wholesale & retail | 2025 |
| Protrait Ltd | Hospitality | 2020 |
| Proud Investments Ltd | Real estate | 2022 |
| Provider of Work Ltd | Administrative & support | 2020 |
| Prozon Limited | Real estate | 2024 |
| PRS Dentals Ltd | Health & social care | 2025 |
| Prudent Scholar Ltd | Education | 2024 |
| Pryzm Labs Ltd | Wholesale & retail | 2026 |
| Pryzma Products Ltd | Wholesale & retail | 2024 |
| PS Electronics Repairs Ltd | Wholesale & retail | 2016 |
| PS Forwarding Co Limited | Transport & logistics | 2005 |
| PS Forwarding EOT Limited | Professional & scientific | 2024 |
| PS Heating&Plumbing Ltd | Construction | 2020 |
| PS Projects Limited | Construction | 2012 |
| PS Services Ltd | Transport & logistics | 2025 |
| PS7 Services (Transport) Ltd | Transport & logistics | 2019 |
| PSB Carpentry Limited | Construction | 2013 |
| Psbn Limited | Administrative & support | 2001 |
| PSD Music Ltd | Information & communication | 2025 |
| PSG Pharma Ltd | Wholesale & retail | 2025 |
| PSG Transport Ltd | Transport & logistics | 2025 |
| Pshdar Restaurant Ltd | Hospitality | 2025 |
| PSK Development London Ltd | Construction | 2016 |
| PSN Bites Ltd | Hospitality | 2026 |
| Pssa Services Limited | Information & communication | 2009 |
| PSW Healthcare Ltd | Health & social care | 2016 |
| PSY Technologies Ltd | Information & communication | 2015 |
| Psychedelic Films Limited | Information & communication | 2017 |
| Psychiatry Needs Ltd | Health & social care | 2015 |
| PT (PR) Ltd | Real estate | 2024 |
| PT Installation Ltd | Construction | 2017 |
| PT Vans Limited | Wholesale & retail | 2018 |
| PTK Distrib Ltd | Transport & logistics | 2024 |
| PTP Software Limited | Information & communication | 1996 |
| Public Clocks Ltd | Other services | 2001 |
| Puccino Slough Limited | Hospitality | 2022 |
| Puddles Childcare Ltd | Health & social care | 2025 |
| Puja Associates Ltd | Information & communication | 2011 |
| Pujara Property Solutions Limited | Real estate | 2023 |
| Pulborough Smiles Ltd | Health & social care | 2021 |
| Pumpkin Cars Ltd | Other services | 2019 |
| Punjab Holdings Limited | Wholesale & retail | 2024 |
| Punjab Sweet & Curry T/A Punjab Sweets & Curry's Ltd | Hospitality | 2019 |
| Punjab Van & Truck Ltd | Transport & logistics | 2024 |
| Punjtun Publics Ltd | Wholesale & retail | 2024 |
| Puran Chand Ltd | Construction | 2025 |
| Pure Accounts & Management Ltd | Professional & scientific | 2012 |
| Pure Blade Ltd | Other services | 2025 |
| Pure Blue Ocean Ltd | Professional & scientific | 2014 |
| Pure Childcare Solutions Ltd | Public administration | 2025 |
| Pure Environs Ltd | Professional & scientific | 2021 |
| Pure EYE Property Ltd | Real estate | 2026 |
| Pure Finance Ltd | Professional & scientific | 2025 |
| Pure Flame Solutions Ltd | Construction | 2022 |
| Pure Globe Ltd | Construction | 2023 |
| Pure Picks Ecom Limited | Wholesale & retail | 2024 |
| Pure Plant Foods Ltd | Wholesale & retail | 2020 |
| Pure Right Move Ltd | Real estate | 2025 |
| Pure Tiles Ltd | Wholesale & retail | 2026 |
| Pure Tune Ltd | Wholesale & retail | 2019 |
| Pureamanah Ltd | Wholesale & retail | 2026 |
| Pureboost Ltd | Public administration | 2020 |
| PURECLEAN1001 Ltd | Administrative & support | 2024 |
| Pureflow Plumbing and Heating Ltd | Energy | 2011 |
| Purely Local LLP | | 2009 |
| Purepath Haulage Ltd | Transport & logistics | 2025 |
| Purity & Brilliance Ltd | Administrative & support | 2015 |
| Purple Builder Services Ltd | Construction | 2022 |
| Purple Ice Ltd | Wholesale & retail | 2024 |
| Purple Lion Entertainment Ltd | Arts & recreation | 2006 |
| Purple Paradigm Technologies Ltd | Information & communication | 2026 |
| Purrhaven Ltd | Wholesale & retail | 2025 |
| Pursue Your Purpose C.I.C. | Education | 2022 |
| Puru Partners Ltd | Hospitality | 2018 |
| Push Management Limited | Professional & scientific | 2018 |
| Putney Fire & Security Systems Ltd | Administrative & support | 2022 |
| Puzzel Ltd | Information & communication | 2000 |
| PV Matters Limited | Health & social care | 2016 |
| PV Residential Limited | Real estate | 2024 |
| PVZ Technical Services UK Ltd | Manufacturing | 2017 |
| PW Media Ltd. | Professional & scientific | 2021 |
| PWR Building Contractors Ltd | Construction | 2026 |
| PXL Tech Ltd | Extraterritorial | 2023 |
| Pynk Holdings LH Limited | Real estate | 2025 |
| Pynk Holdings Limited | Real estate | 2025 |
| Pyramid Transport Ltd | Other services | 2016 |
| Pyrite Properties Limited | Real estate | 2022 |
| Q & a Global Trade Limited | Wholesale & retail | 2025 |
| Q & S 2012 Ltd | Other services | 2012 |