| Psfa Ltd | Administrative & support | 2018 |
| PSM Accounting Services Limited | Professional & scientific | 2013 |
| PSM100 Watford Ltd | Other services | 2022 |
| PSP Associates Limited | Professional & scientific | 2026 |
| Psyche in the City Limited | Health & social care | 2019 |
| Psychic Fairs UK Ltd | Administrative & support | 2023 |
| PTE Electrical Ltd | Construction | 2016 |
| PTG Treatments Holdings Limited | Financial services | 2017 |
| PUB Connect Limited | Professional & scientific | 2023 |
| Public EYE Communications Limited | Professional & scientific | 1991 |
| Public Health Connect Ltd | Professional & scientific | 2020 |
| Puli Trading LLP | | 2023 |
| Pull UP Audio Ltd | Professional & scientific | 2024 |
| Pullman Place (Merstham) Management Company Limited | Households | 2005 |
| Punchpunk Ltd | Manufacturing | 2020 |
| Punter Hately Partners Limited | Financial services | 2000 |
| Purdey Court Limited | Households | 2002 |
| Pure Peptides Limited | Wholesale & retail | 2025 |
| Pure Point Ltd | Wholesale & retail | 2023 |
| Pure Power Services Ltd | Construction | 2023 |
| Pure Progress Limited | Wholesale & retail | 2016 |
| Pure Roots Limited | Wholesale & retail | 2025 |
| Pure Water Consulting Limited | Professional & scientific | 2022 |
| Pure White Films Ltd | Information & communication | 2014 |
| Puresip Ltd | Manufacturing | 2018 |
| Purple Commuse UK Limited | Wholesale & retail | 2012 |
| Purple HAT Security Limited | Information & communication | 2018 |
| Purple Pilot Limited | Extraterritorial | 2023 |
| Purple Seven Limited | Information & communication | 2002 |
| Purple Sky Events Limited | Other services | 2012 |
| Pursue Property Limited | Real estate | 2013 |
| Pushbox Ltd | Administrative & support | 2013 |
| Puzzle Panda Limited | Administrative & support | 2025 |
| PVH Project Solutions Ltd | Professional & scientific | 2025 |
| PX3 Limited | Information & communication | 2017 |
| Pxiii Ltd | Information & communication | 2023 |
| Q Drains Ltd | Water & waste | 2019 |
| Q36.5 UK Limited | Wholesale & retail | 2026 |
| QA IT Technology PVT Limited | Information & communication | 2018 |
| QC Homes Limited | Real estate | 2026 |
| QCD 88 Limited | Professional & scientific | 2019 |
| QEN Ltd | Information & communication | 2019 |
| Qforum Limited | Administrative & support | 2005 |
| Qintara Limited | Information & communication | 2025 |
| QRL Electrical Ltd | Construction | 2010 |
| Qrqr Ltd | Information & communication | 2021 |
| QS Services Hub Ltd | Professional & scientific | 2023 |
| QSE Compliance Limited | Transport & logistics | 2021 |
| Qservices London Limited | Professional & scientific | 2021 |
| Quadrant Freehold Epsom Ltd | Real estate | 2022 |
| Quadrant Ventures Limited | Professional & scientific | 2010 |
| Quail Court & Larchvale Court(Su Tton)Management Co Ltd | Households | 1980 |
| Qualikitty Ltd | Wholesale & retail | 2024 |
| Qualit Solutions Ltd | Information & communication | 2025 |
| Quality LAB Ltd | Information & communication | 2019 |
| Quantum Craft Ltd | Information & communication | 2024 |
| Quantum Living Investments Limited | Real estate | 2024 |
| Quare Limited | Professional & scientific | 2016 |
| Quarry Hill SPV Limited | Real estate | 2022 |
| Quasar Electrical Ltd | Construction | 2025 |
| Quaser Studio Limited | Construction | 2021 |
| Quercia Media Limited | Wholesale & retail | 2022 |
| Querki Limited | Real estate | 2022 |
| Quest Actuarial Ltd | Financial services | 2023 |
| Quetzel Limited | Information & communication | 2022 |
| Quinic Consulting Ltd. | Professional & scientific | 2017 |
| Quirico Estates Limited | Real estate | 2014 |
| Quports Limited | Information & communication | 2019 |
| QX Medical Limited | Professional & scientific | 2012 |
| R & R Holdings (Epsom) Limited | Real estate | 2021 |
| R G Bell Services Ltd | Information & communication | 2025 |
| R Greca Painting and Decorating Ltd | Construction | 2023 |
| R Hearn Limited | Professional & scientific | 2015 |
| R J Adaptions Limited | Wholesale & retail | 2016 |
| R K Investment London Ltd | Real estate | 2022 |
| R R Joinery Limited | Construction | 2004 |
| R S J Security Systems Ltd | Administrative & support | 2009 |
| R U Security Ltd | Professional & scientific | 2010 |
| R Wiles Limited | Construction | 2014 |
| R&C Real Estate Ltd | Real estate | 2020 |
| R&N Financial Services Limited | Professional & scientific | 2019 |
| R&R Chord Limited | Professional & scientific | 2011 |
| R&S Landholding Ltd | Real estate | 2022 |
| R.S Clinical Coding Consultancy Ltd | Professional & scientific | 2016 |
| R.S. Engineering Consultants Limited | Professional & scientific | 2003 |
| R7 Restaurants Limited | Hospitality | 2017 |
| R8 Restaurants Ltd | Hospitality | 2026 |
| R9 Restaurants Ltd | Hospitality | 2026 |
| Ra.Lux Properties Ltd | Real estate | 2020 |
| Rabbit in the Window Limited | Professional & scientific | 2013 |
| Racesource Ltd | Wholesale & retail | 2025 |
| Racesource Property Ltd | Real estate | 2025 |
| Rachael Dalton Consulting Ltd | Administrative & support | 2024 |
| Racketedge Ltd | Arts & recreation | 2025 |
| Radiator Lady Limited | Arts & recreation | 1996 |
| Radwell Limited | Professional & scientific | 2023 |
| Raedar Productions Ltd | Arts & recreation | 2024 |
| Rafa & M Motorcycle Ltd | Wholesale & retail | 2021 |
| Rafaa Collection Limited | Professional & scientific | 2025 |
| Raffle Effect Ltd | Administrative & support | 2025 |