| Profecta Investments Ltd | Financial services | 2022 |
| Profusion Limited | Manufacturing | 1989 |
| Progresh College Ltd | Education | 2020 |
| Progressive Pipeline Limited | Professional & scientific | 2026 |
| Project 100 Consulting Limited | Professional & scientific | 2026 |
| Project Services (Upminster) Limited | Professional & scientific | 2001 |
| Project Southchurch CIC | Health & social care | 2023 |
| PROJECT40MEDIA Limited | Information & communication | 2024 |
| Projects Works Limited | Construction | 2020 |
| Prolac Property Limited | Households | 2008 |
| Prolific Choice Lettings Ltd | Hospitality | 2020 |
| Prolific Health Care Ltd | Health & social care | 2019 |
| Promatrix Ltd | Construction | 2024 |
| Prompt Power Solutions Ltd | Administrative & support | 2022 |
| Pronto (First AID, Fire, Health & Safety) Limited | Education | 2011 |
| Property 2 Homes Limited | Real estate | 2017 |
| Property Care & Renovations Ltd | Construction | 2023 |
| Property Claims Assessors Ltd | Financial services | 2004 |
| Property Investments UK Limited | Construction | 2003 |
| Property Jigsaw Limited | Administrative & support | 2019 |
| Property Point AK Ltd | Construction | 2021 |
| Property Point Developments Limited | Construction | 2020 |
| Property Point FP Ltd | Real estate | 2016 |
| Property Point Group Ltd | Financial services | 2018 |
| Property Point Investments Ltd | Real estate | 2023 |
| Property Point KAS Limited | Real estate | 2018 |
| Property Point Management Limited | Real estate | 2017 |
| Property Point One Limited | Real estate | 2017 |
| Property Point Parquez Ltd | Real estate | 2016 |
| Property Point South East Ltd | Real estate | 2016 |
| Property Point Two Limited | Real estate | 2019 |
| Property Point Victoria Ltd | Construction | 2023 |
| Property Pro South East Ltd | Real estate | 2023 |
| Property Wise Lettings & Management Ltd | Households | 2024 |
| Propitious Day Limited | Real estate | 2019 |
| Proplate Limited | Manufacturing | 2004 |
| Proplumb Services Ltd | Construction | 2022 |
| Prosperity Alpha Ltd | Financial services | 2024 |
| Protect Choice Limited | Administrative & support | 2021 |
| Protofoam Ltd | Professional & scientific | 2023 |
| Proud Nails & Spa Limited | Other services | 2023 |
| Psaila Properties Ltd | Hospitality | 2025 |
| PSJ Retail Ltd | Wholesale & retail | 2026 |
| PSP Property Ltd | Real estate | 2022 |
| Psyche-Spectrum Limited | Health & social care | 2020 |
| PTJ Renewables Ltd | Construction | 2014 |
| PTN Steel Ltd | Manufacturing | 2024 |
| Ptsmartcareservices Limited | Administrative & support | 2018 |
| Puffie Limited | Health & social care | 2013 |
| Pukka Pickleball Ltd | Arts & recreation | 2024 |
| Pulse & Pepper Ltd | Professional & scientific | 2025 |
| Pulse Bars Limited | Hospitality | 2025 |
| Pulse+Path Limited | Transport & logistics | 2026 |
| Punaar Properties Limited | Real estate | 2023 |
| Punjab Grill Ltd | Hospitality | 2023 |
| Purco Ltd | Real estate | 2010 |
| Pureandsimpleproducts Ltd | Professional & scientific | 2025 |
| Purely Consulting Limited | Professional & scientific | 2025 |
| Purely People Recruitment Limited | Professional & scientific | 2024 |
| Purpose Sisters Circle Ltd | Other services | 2025 |
| PWJ Clothing Limited | Wholesale & retail | 2025 |
| PYD Trading Ltd | Wholesale & retail | 2013 |
| QSR5 Ltd | Construction | 2010 |
| Quadro Developments Limited | Real estate | 1994 |
| Quality and Performance Consulting Limited | Information & communication | 2002 |
| Quality Assets Ltd | Real estate | 2021 |
| Quality Compassionate Care Ltd | Administrative & support | 2022 |
| Quality Products Traders Ltd | Wholesale & retail | 2021 |
| Quality Street Group Limited | Extraterritorial | 2020 |
| Quality Windows & Doors Ltd | Construction | 2018 |
| Quantrex Construction Ltd | Construction | 2026 |
| Quantum Capital Partners Limited | Professional & scientific | 1999 |
| Quantum Care Services Limited | Health & social care | 2009 |
| Quantum Management Consulting Ltd | Real estate | 2019 |
| Quantum Training Academy Limited | Education | 2024 |
| Queuejump Group Limited | Information & communication | 2026 |
| Quicksouth Limited | Real estate | 1984 |
| Quinlan Holdings Ltd | Financial services | 2017 |
| Quinnross London Ltd | Construction | 2024 |
| Quodex Solutions Limited | Information & communication | 2014 |
| Qwerty Print Solutions Ltd | Manufacturing | 2015 |
| Qwizz Books Limited | Wholesale & retail | 2025 |
| R & D Chauffeurs Ltd | Transport & logistics | 2026 |
| R & E Group Limited | Wholesale & retail | 2022 |
| R & R Construction Specialists Limited | Construction | 2022 |
| R Bines Consulting Ltd | Information & communication | 2013 |
| R C Project & Sales Management Limited | Construction | 2010 |
| R Devine Limited | Health & social care | 2015 |
| R E C S Limited | Administrative & support | 2003 |
| R Hood Services Ltd | Professional & scientific | 2013 |
| R J M Developers Limited | Construction | 2021 |
| R K Horsfall Limited | Real estate | 2026 |
| R Plant Holdings Limited | Financial services | 2017 |
| R Watson Management Services Ltd | Construction | 2014 |
| R&K Decorating Services Limited | Construction | 2021 |
| R&R Carpentry Ltd | Construction | 2019 |
| R-Kos Maintenance Ltd | Professional & scientific | 2015 |
| R.A.Byford & Sons Limited | Real estate | 1967 |
| R.C.Mchardy & Co. Limited | Construction | 2010 |
| R.D.S. Plumbing Limited | Construction | 2006 |