| Productool Engineering Limited | Manufacturing | 1982 |
| Professional Choice Support Ltd | Professional & scientific | 2019 |
| Progress Homes Group Ltd | Real estate | 2024 |
| Project Mako Ltd | Construction | 2019 |
| Prolectrotech Ltd | Information & communication | 2011 |
| Promiracle Limited | Other services | 2014 |
| Property Auctions IO Ltd | Information & communication | 2025 |
| Property Finders Direct Limited | Construction | 2025 |
| Property Plus (International) Limited | Professional & scientific | 2017 |
| Property Solutions (Lettings & Management) Limited | Real estate | 2008 |
| Prospect Bathrooms Ltd | Construction | 2025 |
| Prospect Surrey Ltd | Construction | 2018 |
| Prospects Home Improvements Ltd | Construction | 2019 |
| Prospects Refurbishments Limited | Construction | 2026 |
| Protect 20/20 Limited | Information & communication | 2014 |
| Protection Financial Services Ltd | Financial services | 2020 |
| Proteus-Cyber Ltd | Information & communication | 2010 |
| Prtnr Strategies Limited | Information & communication | 2023 |
| Prystine Limited | Administrative & support | 2004 |
| PS Beauty Salon Ltd | Other services | 2025 |
| Psychiatric Healthcare Ltd | Health & social care | 2011 |
| Psyq Centre Limited | Public administration | 2024 |
| PT Karma Title Limited | Professional & scientific | 2014 |
| Public Market Limited | Professional & scientific | 2014 |
| Puffwood Limited | Real estate | 2021 |
| Pulse Premier Football Limited | Arts & recreation | 2011 |
| Pump Design and Services Limited | Professional & scientific | 2014 |
| Purbecks Consulting Ltd | Information & communication | 2019 |
| Purbeli Incorporation Limited | Hospitality | 2025 |
| Purbeli Trading Limited | Hospitality | 2026 |
| Pure Dreams Photography Ltd | Professional & scientific | 2025 |
| Pure Expertise Ltd | Professional & scientific | 2022 |
| Pure Linen (Holdings) Limited | Real estate | 2001 |
| Pure Vision Events Ltd | Manufacturing | 2019 |
| Purity Victoria Healthcare Services Pvhs Ltd | Health & social care | 2023 |
| Purple Rain Consulting Limited | Information & communication | 2010 |
| Purple Renewables Group LLP | | 2025 |
| Purple Windmill Ltd | Manufacturing | 2008 |
| Puttenham Construction Company Limited | Construction | 2013 |
| PVO Group Ltd | Real estate | 2026 |
| Pway Consulting Limited | Construction | 2020 |
| Pyrford Place Residents Company Limited | Households | 1994 |
| Pyxus Agriculture Holdings Limited | Financial services | 2018 |
| Q3M Limited | Information & communication | 2023 |
| Qdole Limited | Information & communication | 1987 |
| Qnetix Ltd | Information & communication | 2021 |
| Qolaba Limited | Professional & scientific | 2025 |
| QSN 2025 Ltd | Professional & scientific | 2025 |
| QTA Interior Refurbishment Ltd | Construction | 2014 |
| Quadtronics Ltd | Wholesale & retail | 2004 |
| Quality and Validation Compliance Limited | Professional & scientific | 2020 |
| Quality Perspective Limited | Professional & scientific | 2011 |
| Qualityfloor Ltd | Construction | 2025 |
| Quant Capital Consulting Limited | Administrative & support | 2013 |
| Quantbase Consulting Ltd | Professional & scientific | 2025 |
| Quantum Automation Limited | Manufacturing | 2025 |
| Quantum Brain Tutoring Ltd | Education | 2025 |
| Quantus Information Services Limited | Information & communication | 2018 |
| Quatrain Ltd | Hospitality | 2017 |
| Quay Homes & Developments Ltd | Construction | 2022 |
| Quayslake Limited | Real estate | 2026 |
| Queens Court (Leatherhead) Residents Management Company Ltd | Households | 2022 |
| Quick EPC Limited | Professional & scientific | 2014 |
| Quick Home Ltd | Real estate | 2013 |
| Quick TAP Consulting Ltd | Professional & scientific | 2021 |
| Quickfix Electrical Service Ltd | Energy | 2014 |
| Quicktaka Limited | Financial services | 2009 |
| Quortex Consultants Limited | Information & communication | 1990 |
| Quorum Consulting Limited | Professional & scientific | 2003 |
| Quorum Corporate Services Limited | Administrative & support | 2000 |
| Quorum Directors Limited | Professional & scientific | 2000 |
| Quorum Nominees Limited | Professional & scientific | 2000 |
| Quorum Secretaries Limited | Professional & scientific | 2000 |
| R & a Property Services Limited | Construction | 2015 |
| R B Plumbing & Heating South Limited | Construction | 2012 |
| R J Ford & Sons Limited | Wholesale & retail | 2014 |
| R M Brown Electrical Contractors Ltd | Energy | 2004 |
| R S Electrical (Aldershot) Ltd | Construction | 2008 |
| R&G Fleet Valeting Centre Ltd | Administrative & support | 2022 |
| R. a. Croft Ltd. | Construction | 2003 |
| R.H.F. Potter & Sons Limited | Hospitality | 1965 |
| R2 Electrical Services Limited | Construction | 2024 |
| R3C Boutique Limited | Wholesale & retail | 2024 |
| RAB Long & Company Limited | Professional & scientific | 2022 |
| Racam Limited | Real estate | 2025 |
| Rachel Hind Consulting Limited | Other services | 2013 |
| Radiant Systems Limited | Information & communication | 2024 |
| Radiation Consultancy Services Limited | Professional & scientific | 1993 |
| Radius Communication Systems Limited | Information & communication | 1989 |
| Radivoy UK Ltd | Other services | 2016 |
| Radmod Research Ltd. | Professional & scientific | 2012 |
| Rafic Products Limited | Administrative & support | 2018 |
| Ragphoto Ltd | Information & communication | 2017 |
| RAI Training Ltd | Education | 2024 |
| Raident Ltd | Health & social care | 2018 |
| Raja Sufian Limited | Administrative & support | 2021 |
| Rajan Develops Ltd | Real estate | 2026 |
| RAM BTL Ltd | Real estate | 2019 |
| RAM Finance Ltd | Financial services | 2013 |
| RAM Fitness UK Ltd | Arts & recreation | 2024 |