| Projectlifeline CIC | Professional & scientific | 2023 |
| Projectxchain Services Ltd | Professional & scientific | 2019 |
| Propcollectibles Ltd | Financial services | 2025 |
| Property Network (Balham) Limited | Real estate | 2015 |
| Property Network (KA SPV) Limited | Real estate | 2016 |
| Property Network (KA) Limited | Real estate | 2010 |
| Property Network Asset Management Limited | Real estate | 2015 |
| Property Network Central (Corunna Road) Limited | Real estate | 2018 |
| Property Network Central (SPV) Limited | Real estate | 2016 |
| Property Network Central Limited | Real estate | 2013 |
| Property Network Innovations Limited | Real estate | 2013 |
| Property Network London Limited | Real estate | 2013 |
| Property.Ro Limited | Real estate | 2020 |
| Propholders Ltd | Financial services | 2024 |
| Proptec Limited | Professional & scientific | 2017 |
| Proptrading Ltd | Real estate | 2025 |
| Prospect Barnsley Limited | Real estate | 2008 |
| Prostar Trending Online Ltd | Wholesale & retail | 2018 |
| Prostellar Limited | Real estate | 2025 |
| Protech PVT Limited | Wholesale & retail | 2025 |
| Protos International Limited | Wholesale & retail | 2025 |
| Proximity Building Limited | Real estate | 2011 |
| Prust Global Ltd | Wholesale & retail | 2020 |
| PSD Strategic Consulting Limited | Professional & scientific | 2017 |
| PSM Retail Limited | Wholesale & retail | 2014 |
| Pulborough Pizza & Grill Limited | Hospitality | 2019 |
| Pulse Swim School Ltd | Arts & recreation | 2025 |
| Purazen Gold Ltd | Wholesale & retail | 2019 |
| Pure AU London Limited | Wholesale & retail | 2019 |
| Pure Productions Limited | Professional & scientific | 1994 |
| Pure Sands Limited | Real estate | 2022 |
| Purebeautybya Ltd | Other services | 2021 |
| Pureclean and Hoarding Therapy Services Ltd | Administrative & support | 2024 |
| Purley Assets Ltd | Real estate | 2022 |
| Purley Cafe & Sandwich Bar Limited | Hospitality | 2024 |
| Purley Oaks Freehold Ltd | Households | 2022 |
| Purlin Construction Limited | Construction | 2003 |
| Purple Panda Supplies Limited | Wholesale & retail | 2024 |
| Purple Stone Group Ltd | Information & communication | 2026 |
| PYC Resources Limited | Real estate | 2025 |
| Pygic Ltd | Information & communication | 2008 |
| Qasba Limited | Professional & scientific | 2006 |
| QM Executive Cars Ltd | Wholesale & retail | 2021 |
| Quantara Clinical Research Group Ltd | Professional & scientific | 2026 |
| Quantum Enterprise Developments Limited | Information & communication | 1989 |
| Queens Catering Company(Park Lane)Limited | Financial services | 1964 |
| Quik FIX Consultancy Ltd | Information & communication | 2021 |
| Quulo Tech Ltd | Information & communication | 2026 |
| Quwatan Kebab Limited | Hospitality | 2019 |
| R & J Contractors Ltd | Construction | 2007 |
| R Dudman Construction Limited | Construction | 2016 |
| R Fitness Gyms Ltd | Arts & recreation | 2026 |
| R H Construction London Ltd | Construction | 2019 |
| R S & G Consultancy Ltd | Construction | 2025 |
| R S B Plastering Limited | Construction | 2007 |
| R&B Fastfood Limited | Hospitality | 2021 |
| R-Link Tech Talent Ltd | Administrative & support | 2025 |
| R-Space Group Ltd | Information & communication | 2025 |
| R.O.D Mayo Limited | Transport & logistics | 2024 |
| R36 Ltd | Other services | 2018 |
| Raama Investments Ltd | Real estate | 2024 |
| RAB Konsulting Ltd | Professional & scientific | 2013 |
| Raclette Melt Limited | Hospitality | 2014 |
| Raco Holdings Ltd | Real estate | 2025 |
| Radiant Sun Ltd | Wholesale & retail | 2019 |
| Raghuvanshi Association(The) | Health & social care | 1986 |
| Ragsm Ltd | Wholesale & retail | 2024 |
| Rail Power Solutions Ltd | Construction | 2013 |
| RAJ Living Ltd | Construction | 2023 |
| Raja Technology Ltd | Information & communication | 2017 |
| RAM INS Consultants Ltd | Financial services | 2023 |
| Ram-En IT Services UK Limited | Information & communication | 2022 |
| Ramadevi BI Solutions Ltd | Information & communication | 2011 |
| Raman Consulting Limited | Professional & scientific | 2015 |
| Ramcom UK Limited | Wholesale & retail | 2009 |
| Rapid Rise Scaffolding Limited | Construction | 2025 |
| Ratanam Consultancy Limited | Information & communication | 2015 |
| Ratatula Estate Ltd | Real estate | 2024 |
| Raven Refurbishments Ltd | Administrative & support | 2016 |
| Ravenshouse Limited | Professional & scientific | 2015 |
| Ravitap Properties Limited | Real estate | 2024 |
| RAW Natural Foods Ltd | Agriculture & fishing | 2024 |
| RAW Security Limited | Information & communication | 2012 |
| Rawling (Holdings) Limited | Real estate | 1958 |
| RAY Studio Architects Limited | Professional & scientific | 2021 |
| Raymond Richards Limited | Professional & scientific | 2010 |
| Raymond Technologies Ltd | Information & communication | 2023 |
| Rayner LDN Ltd | Wholesale & retail | 2025 |
| RAZ Development Limited | Real estate | 2023 |
| RAZ1 Ltd | Other services | 2024 |
| Rdmd Properties Ltd | Real estate | 2019 |
| Rdsi Holdings Limited | Construction | 2025 |
| REA Maid Cleaning Services Ltd | Administrative & support | 2020 |
| Read Building Solutions Limited | Construction | 2015 |
| Real Tech Ltd | Information & communication | 2015 |
| Rechase Cleaning Services Ltd | Administrative & support | 2025 |
| Recovery 24/7 Ltd | Transport & logistics | 2016 |
| Rectory Court Residents Limited | Households | 1998 |
| Rectory Park Limited | Real estate | 2016 |
| Red Adams Utilities Ltd | Construction | 2022 |