| Proman Systems Ltd | Information & communication | 2010 |
| Promoveo Supported Housing CIC | Real estate | 2023 |
| Propello Consultants Ltd | Professional & scientific | 2025 |
| Proper Mint Media Ltd | Information & communication | 2023 |
| Proper Mint Property Investments Limited | Real estate | 2023 |
| Property Agency Services Ltd | Administrative & support | 2023 |
| Property Fit UK Ltd | Real estate | 2022 |
| Property Holding 1 Limited | Real estate | 2023 |
| Property Investment Consulting Limited | Real estate | 2015 |
| Property Maintenance U.K Limited | Administrative & support | 2025 |
| Property Trading 1 Limited | Real estate | 2023 |
| PROPERTY365 Investments Ltd | Real estate | 2024 |
| PROPERTY365 Lettings Ltd | Real estate | 2026 |
| Prospect Heights Management Company Limited | Households | 2025 |
| Protein Solutions Ltd | Wholesale & retail | 2023 |
| Proud to BEE MCR Ltd | Wholesale & retail | 2025 |
| Provincial Tax Shops (UK) Limited | Professional & scientific | 2000 |
| PS Contract Furniture Limited | Manufacturing | 2015 |
| PSP Trade & Consultants Ltd | Wholesale & retail | 2023 |
| Pssa Ltd | Real estate | 2019 |
| PT Portfolios Ltd | Real estate | 2025 |
| PT Ward Decorators Limited | Construction | 2013 |
| PTD Worldwide Ltd | Transport & logistics | 2018 |
| PTW Project Management Limited | Construction | 2017 |
| PULSE2PUFF Ltd | Wholesale & retail | 2024 |
| PULSELECTRONICSNO1 Ltd | Wholesale & retail | 2015 |
| Pure Elegance Limited | Other services | 2024 |
| Pure Hitech Limited | Information & communication | 2018 |
| Pursuit OV Passion Ltd | Wholesale & retail | 2020 |
| PV Fluid Products UK Ltd | Professional & scientific | 1997 |
| Quadcomp Limited | Wholesale & retail | 2016 |
| Quadrant House Private Day Nursery Limited | Other services | 2013 |
| Quickedge Surveying Ltd | Professional & scientific | 2021 |
| Quintessential Items Limited | Construction | 2019 |
| Quinton Group Ltd | Professional & scientific | 2018 |
| Quinton Solutions Limited | Extraterritorial | 2013 |
| R G Plastering (NW) Ltd | Construction | 2022 |
| R I Electrical Solutions Ltd | Construction | 2020 |
| R Mcpartland Electrical Limited | Construction | 2017 |
| R Miles Ltd | Construction | 2023 |
| R S Cooling Limited | Construction | 2016 |
| R W Window Cleaning Ltd | Administrative & support | 2024 |
| R&A Car Solution Limited | Transport & logistics | 2019 |
| R. E. C. Installations Limited | Construction | 2014 |
| R.B Briscoe 119 Limited | Wholesale & retail | 2016 |
| R.P. Mistry Limited | Health & social care | 2010 |
| RA Vision Ltd | Wholesale & retail | 2025 |
| Race & Retro Limited | Wholesale & retail | 2024 |
| Rachael MAY Johnson Ltd | Professional & scientific | 2015 |
| Rachael Welford Ltd | Other services | 2021 |
| Racine Developments London Ltd | Financial services | 2024 |
| RAD Services Limited | Professional & scientific | 2017 |
| Radiant Dental Limited | Health & social care | 2021 |
| Raerose Properties Ltd | Construction | 2022 |
| Rahman Healthcare Services Ltd | Health & social care | 2021 |
| Raifatechnologies Limited | Information & communication | 2024 |
| Rainbow Retailers Ltd | Wholesale & retail | 2019 |
| Raja Kingdom Ltd | Wholesale & retail | 2022 |
| Rajar Kalan Ltd | Wholesale & retail | 2022 |
| Ramya's Ltd | Information & communication | 2025 |
| Rapidline Homes Ltd | Real estate | 2026 |
| Rapidline Logistics Ltd | Transport & logistics | 2026 |
| Rash Estate Ltd | Real estate | 2022 |
| RASHE2R Ltd | Health & social care | 2016 |
| Raven Holdings Ltd | Financial services | 2023 |
| Raxo Ltd | Construction | 2018 |
| RB Energyhub Ltd | Wholesale & retail | 2026 |
| RB Flames Ltd | Hospitality | 2019 |
| RBH Property Group Ltd | Real estate | 2021 |
| RC.BARGAINS10 Ltd | Wholesale & retail | 2024 |
| RDN Consulting Limited | Administrative & support | 2006 |
| Reach Agency Limited | Information & communication | 2012 |
| Real Acting Limited | Education | 2025 |
| Real PT Ltd | Arts & recreation | 2019 |
| Rebuild Northwest Limited | Construction | 2019 |
| REC Music Ltd | Education | 2022 |
| Recovery Haus Ltd | Other services | 2025 |
| Recusant Nine Ltd | Information & communication | 2025 |
| Red Road Limited | Manufacturing | 2003 |
| Red Rose Products Limited | Manufacturing | 1955 |
| Redetec Limited | Public administration | 2007 |
| Redline Automotive 22 Ltd | Information & communication | 2020 |
| Redline Motorz Ltd | Wholesale & retail | 2018 |
| Redpulse Limited | Transport & logistics | 2010 |
| Redrows Financial Ltd | Financial services | 2021 |
| Redrows Property Limited | Real estate | 2022 |
| Redwood Property Rental Ltd | Real estate | 2018 |
| Ree-Style Ltd | Other services | 2015 |
| Reeds Corporate Identities Limited | Professional & scientific | 2000 |
| Reeds Credits Limited | Financial services | 2000 |
| Reeds Financial Services Limited | Financial services | 2000 |
| Reeds Fleet Management Limited | Professional & scientific | 2000 |
| Reeds Fleet Services Limited | Professional & scientific | 2000 |
| Reeds Holdings Limited | Financial services | 2000 |
| Reeds Property Investments Limited | Real estate | 2000 |
| Reeds School of Motoring (Wales) Limited | Professional & scientific | 1996 |
| Reesclementsproperties Ltd | Households | 2020 |
| Reformers of Peterloo Co-Operative CIC | Information & communication | 2026 |
| Refucity Ltd | Wholesale & retail | 2025 |
| Regal Ecommerce Limited | Wholesale & retail | 2026 |