| Property Webb Investment Ltd | Real estate | 2016 |
| Prorisk-Solution Ltd | Professional & scientific | 2026 |
| Prospect Electrical Contractors Limited | Construction | 2017 |
| Prospect Number Seven Limited | Administrative & support | 2002 |
| Protector Services Group Ltd. | Professional & scientific | 2008 |
| Proud Ventures Limited | Other services | 2017 |
| Prudence Holdings Ltd | Professional & scientific | 2020 |
| PS Studio Creative Limited | Other services | 2024 |
| PSB Decorating Ltd | Construction | 2019 |
| Psychoacoustica Limited | Information & communication | 2021 |
| PT Taks Ltd | Health & social care | 2022 |
| Puddles and Play Childcare Ltd | Health & social care | 2026 |
| Pullan Construction Limited | Construction | 2024 |
| Pump Lane (Hayes) Management Company Limited | Real estate | 2020 |
| Pure Cloud Lettings Ltd | Real estate | 2025 |
| Pure Residences Ltd | Hospitality | 2025 |
| Pure Rheumatology London Ltd | Health & social care | 2020 |
| Pure Scan Ltd | Health & social care | 2024 |
| Purple Sea Limited | Real estate | 2006 |
| Purplecore Ltd | Arts & recreation | 2024 |
| Purrinos Investments Limited | Construction | 2017 |
| PVR Asset Holdings Ltd | Real estate | 2026 |
| PWD Construction Ltd | Construction | 2022 |
| Pyke Crane Operators Ltd | Construction | 2015 |
| Pyraminx Limited | Real estate | 2022 |
| Pyre Sense Limited | Administrative & support | 2026 |
| Q E Decorating Ltd | Construction | 2015 |
| Qmzubis Ltd | Arts & recreation | 2022 |
| Quartz Models Ltd | Extraterritorial | 2015 |
| Queens Award Limited | Education | 2022 |
| Quercus Gardens [Hampstead] Ltd | Administrative & support | 2007 |
| Quick MAN and Van Ltd | Transport & logistics | 2016 |
| Quick Pick HU Limited | Wholesale & retail | 2025 |
| Quick Spedition Ltd | Transport & logistics | 2021 |
| Quickspread Ltd | Construction | 1999 |
| Quintasphere Solutions Limited | Information & communication | 2026 |
| Quni Construction Limited | Construction | 2025 |
| R Billa Ltd | Construction | 2023 |
| R C GAS & Heating Ltd | Construction | 2023 |
| R Corcoran Logistics Ltd | Transport & logistics | 2023 |
| R H Builders and Decorators Limited | Construction | 2018 |
| R J Shave Farrier Limited | Other services | 2010 |
| R M C Chippy Ltd | Hospitality | 2012 |
| R P Delivery Solutions Ltd | Transport & logistics | 2015 |
| R&K Electrical Ltd | Construction | 2025 |
| R-K10 Limited | Administrative & support | 2016 |
| R-K11 Limited | Financial services | 2025 |
| R.J. Property Maintenance Limited | Construction | 2022 |
| R.P.C. Formworks Ltd | Construction | 2010 |
| R.P.W. Soft Services Limited | Construction | 2015 |
| R@Re Technology Limited | Hospitality | 2016 |
| RAA Enterprises Ltd | Construction | 2015 |
| Rachp School Ltd | Administrative & support | 2024 |
| Rada Interior Construction Ltd | Construction | 2021 |
| Radconsult Group Ltd | Health & social care | 2025 |
| Radio Control Supplies Limited | Wholesale & retail | 1996 |
| Raffi Construction Ltd | Construction | 2025 |
| Raine and Co. (Cheshunt) Ltd | Real estate | 2013 |
| Raised Access Flooring Company UK Limited | Construction | 2001 |
| Rakemp Ltd | Information & communication | 2023 |
| Ralph's Balham LLP | | 2024 |
| RAM Transportation Ltd | Transport & logistics | 2018 |
| Ramasis Limited | Financial services | 2003 |
| Rapid Reinforcement Services Ltd | Construction | 2007 |
| Rascal Barbers Ltd | Other services | 2023 |
| RAY Rose Removals Limited | Transport & logistics | 2020 |
| Rayit Ltd | Information & communication | 2022 |
| Rayner Hecht & Gregorio Limited | Real estate | 2024 |
| Rayo Concept Ltd | Health & social care | 2019 |
| RB Costa Services Limited | Construction | 2017 |
| RBC Maintenance Ltd | Construction | 2017 |
| RBL Construction Ltd | Construction | 2024 |
| RC Depot Limited | Professional & scientific | 2007 |
| RCL Project Ltd | Administrative & support | 2026 |
| RE Rugs & Carpets Ltd | Wholesale & retail | 2021 |
| Real DEV Labs Ltd | Information & communication | 2022 |
| Real Life Opportunities Ltd | Education | 2023 |
| Real Lounge UK Limited | Hospitality | 2019 |
| Recber Building Ltd | Construction | 2023 |
| Recber Electrical Ltd | Construction | 2023 |
| Recber Property & Investment Ltd | Real estate | 2019 |
| Record Business Support Limited | Professional & scientific | 2018 |
| Recruitz Ltd | Administrative & support | 2017 |
| Recuventa Ltd | Construction | 2026 |
| Red and Yellow Properties Ltd | Real estate | 2017 |
| Red Arboriculture Limited | Professional & scientific | 2025 |
| Red Bar Law Holdings Ltd | Financial services | 2026 |
| Red Beard Creative Ltd | Professional & scientific | 2021 |
| Red Biodiversity Limited | Professional & scientific | 2025 |
| Red Brook Developments Limited | Real estate | 2022 |
| Red Brook Holdings Limited | Financial services | 2017 |
| Red Brook Properties Ltd | Real estate | 2021 |
| Red City Concierge Ltd | Construction | 2023 |
| Red Dust Digital Ltd | Other services | 2006 |
| Red Ecology Limited | Professional & scientific | 2024 |
| Red Environmental Group Limited | Professional & scientific | 2025 |
| Red Maple Trading Limited | Wholesale & retail | 2023 |
| Redbox Property Management Limited | Real estate | 2016 |
| Reddragon Housing Ltd | Real estate | 2026 |
| REDINGS1 Ltd | Extraterritorial | 2022 |