| Premier DC Limited | Other services | 2016 |
| Premm Properties Limited | Financial services | 2025 |
| Premm Property Holdings Limited | Financial services | 2025 |
| Preston Consulting Limited | Professional & scientific | 2006 |
| PRH Pro Ltd | Real estate | 2018 |
| Pricebeam Ltd | Information & communication | 2016 |
| Priceright Supplies Limited | Administrative & support | 2011 |
| Pride Debt Recovery Ltd | Other services | 2010 |
| Pride Hill Limited | Real estate | 2019 |
| Pridela Limited | Transport & logistics | 2008 |
| Primary Medico Consulting Ltd | Professional & scientific | 2013 |
| Prime Commercial and Residential Cleaning Services Ltd | Administrative & support | 2025 |
| Prime Espace Ltd | Professional & scientific | 2024 |
| Prime Homes Management Limited | Households | 2024 |
| Prime Law Chambers Ltd | Professional & scientific | 2019 |
| Prime Pulse Sales 2 Ltd | Administrative & support | 2025 |
| Prime Real Estate INT Ltd | Real estate | 2025 |
| Prime Waste Services Ltd | Water & waste | 2023 |
| Primeguk Ltd | Other services | 2024 |
| Princelet Partners Limited | Professional & scientific | 2011 |
| Princes Court (New Malden) Management Company Limited | Households | 1985 |
| Priority Building and Facility Maintenance Ltd | Administrative & support | 2022 |
| Private Cleaners Ltd | Administrative & support | 2015 |
| Pro-Pipefitting Ltd | Construction | 2018 |
| Proathlon Training Limited | Professional & scientific | 2011 |
| Process First Limited | Administrative & support | 2006 |
| Procoat Specialist Limited | Wholesale & retail | 2025 |
| Procubate Ltd | Professional & scientific | 2025 |
| Procurement Capability Ltd | Professional & scientific | 2021 |
| Prodeco Ltd | Construction | 2015 |
| Professional Accountancy Students' Services (Pass) Ltd. | Administrative & support | 2016 |
| Profina Consult Ltd. | Professional & scientific | 2015 |
| Profit Sense Limited | Professional & scientific | 2011 |
| Progressing People Limited | Professional & scientific | 2014 |
| Prohaus Ltd | Construction | 2015 |
| Project IQ Talent Limited | Administrative & support | 2022 |
| Project Origin Ltd | Information & communication | 2026 |
| Prologue Project Co-Ordination Limited | Arts & recreation | 2007 |
| Prometheus Technology Limited | Information & communication | 2019 |
| Proper Confetti Limited | Wholesale & retail | 2019 |
| Property 247 Ltd | Real estate | 2020 |
| Property by SA Ltd | Real estate | 2026 |
| Property Managed Ltd | Real estate | 2018 |
| Propertyfix Services Ltd | Construction | 2019 |
| Propvt Ltd | Real estate | 2022 |
| Prospect 7 Limited | Construction | 2005 |
| Prosper Future Investments Limited | Households | 2025 |
| Protea Global Ltd | Administrative & support | 2017 |
| Protea Home Developers Limited | Construction | 2020 |
| Protea Properties Ltd | Real estate | 2025 |
| Protogenia Recruitment Limited | Administrative & support | 2016 |
| Proxyden Ltd | Professional & scientific | 2025 |
| Pryced Group Ltd | Wholesale & retail | 2025 |
| PS ED Limited | Other services | 2007 |
| PSB Associates Ltd | Professional & scientific | 2024 |
| Pscurtis Limited | Other services | 2009 |
| Ptel Investments Ltd | Real estate | 2021 |
| Pugwane Ltd | Real estate | 2020 |
| Puia Khenglawt Holdings Ltd | Financial services | 2024 |
| PUK Fencing Ltd | Construction | 2024 |
| Pure White Lines Europe Ltd | Wholesale & retail | 2023 |
| Purple Squirrel Recruitment Ltd | Professional & scientific | 2022 |
| Purposeformal Property Management Limited | Households | 1997 |
| Purton Scaffolding Ltd | Construction | 2021 |
| Putney Wraparound Childcare Limited | Health & social care | 2016 |
| Pyne Road (Freehold) Ltd | Households | 2018 |
| Pyramid Management Solutions Ltd | Administrative & support | 2007 |
| Pyro Ferret Ltd | Administrative & support | 2020 |
| Q One Property Services Ltd | Administrative & support | 2015 |
| Q Trade Solutions Ltd | Other services | 2025 |
| Q&Q Enterprises Ltd | Wholesale & retail | 2020 |
| Q4 Management Limited | Professional & scientific | 2003 |
| Qabana Limited | Hospitality | 2020 |
| Qbix AI Ltd | Information & communication | 2026 |
| Qirattraders Ltd | Wholesale & retail | 2026 |
| QME Corp Ltd | Wholesale & retail | 2020 |
| QT Developments Ltd | Real estate | 2015 |
| Qualifai Ltd | Information & communication | 2020 |
| Qualipro Foods Limited | Wholesale & retail | 2017 |
| Qualitas Software Limited | Information & communication | 2012 |
| Quality Home Ltd | Real estate | 2007 |
| Quality Home Services Ltd | Construction | 2021 |
| Quantock Retail Ltd | Wholesale & retail | 2020 |
| Quantum Edge Consultancy Ltd | Professional & scientific | 2025 |
| Qudo Baby Ltd | Wholesale & retail | 2020 |
| Qudo Global Ltd | Wholesale & retail | 2021 |
| Queens Road (Weybridge) Residents' Association Limited | Households | 1974 |
| Queensmere Investments Ltd | Real estate | 2025 |
| Queenswood Court Management Company Limited | Households | 2013 |
| Queenswood Property Developments Limited | Administrative & support | 2012 |
| Questprofectus Limited | Professional & scientific | 2020 |
| Quick Tax Ltd | Professional & scientific | 2021 |
| Quick Web Limited | Information & communication | 1998 |
| Quickbooks and Tax Services Limited | Professional & scientific | 2010 |
| Quirksmode Ltd | Professional & scientific | 2013 |
| Quiver Tree Ltd | Real estate | 2020 |
| Qumily Ltd | Wholesale & retail | 2023 |
| QZD Consulting Ltd | Professional & scientific | 2026 |
| R & K Joinery Limited | Manufacturing | 2006 |
| R & R Roofing & Sons Limited | Construction | 2025 |