| Prosperity Management & Development Limited | Real estate | 2011 |
| Protect Resolve Ltd | Information & communication | 2023 |
| Proton Computers Limited | Information & communication | 2005 |
| Proud Mary Productions Limited | Information & communication | 2022 |
| Proudman Holdings Ltd | Financial services | 2026 |
| PSA London Limited | Wholesale & retail | 2008 |
| Psaj Limited | Health & social care | 2019 |
| PSC Medical Limited | Health & social care | 2017 |
| Psjv Metro Ltd | Wholesale & retail | 2024 |
| Psjv Victoria Ltd | Wholesale & retail | 2025 |
| PTR Removals and Storage Limited | Transport & logistics | 2018 |
| Ptrc (Accounts) Ltd | Professional & scientific | 2025 |
| Pullen Shenton Ltd | Real estate | 2026 |
| Pulsar Products Limited | Professional & scientific | 2020 |
| Puma Management Consultants Limited | Professional & scientific | 2015 |
| Pure Brew Limited | Information & communication | 2018 |
| Pure Bright Solutions Limited | Wholesale & retail | 2025 |
| Pure Controls (Europe) Limited | Construction | 2016 |
| Pure Nurture Ltd | Health & social care | 2015 |
| Purely Marketing Limited | Professional & scientific | 2004 |
| Pursuit Claims Limited | Professional & scientific | 2018 |
| PVA Capital Limited | Professional & scientific | 2025 |
| PVC Depot T/A A&D Windows Ltd | Wholesale & retail | 2020 |
| PW Geosolutions Limited | Professional & scientific | 2021 |
| Pyrotech Sprinklers Ltd | Construction | 2023 |
| Q Estates & Developments Ltd | Real estate | 1996 |
| Qaspir Consulting Limited | Education | 2014 |
| QCC (Quantum & Claims) Ltd | Professional & scientific | 2014 |
| Qlinilogic Ltd | Professional & scientific | 2023 |
| QR Design and Build Limited | Professional & scientific | 2019 |
| QRA Meddtech Services Ltd | Professional & scientific | 2025 |
| Quality Box Manchester Limited | Manufacturing | 2019 |
| Quality Compliance Services Limited | Professional & scientific | 2005 |
| Quantum Anvils Ltd | Real estate | 2018 |
| Quaquaverse Limited | Real estate | 2022 |
| Quarrybank Bathrooms Ltd | Wholesale & retail | 2022 |
| Quarrybank Construction Limited | Construction | 2024 |
| Quattro Consulting Limited | Information & communication | 1997 |
| Queens Court (2000) Co. Ltd | Professional & scientific | 2000 |
| Quick Stitch Handforth Limited | Other services | 2015 |
| Quickhostuk Limited | Information & communication | 2013 |
| Quickmont Partnership Ltd | Professional & scientific | 2010 |
| Quincomm Ltd | Information & communication | 2018 |
| Quinn Corporate Services Limited | Professional & scientific | 2003 |
| Quiqsolutions Limited | Information & communication | 2011 |
| Quod Futuri Operis Ltd | Information & communication | 2020 |
| Quokka Coffee Limited | Hospitality | 2019 |
| QYM Ltd | Professional & scientific | 2025 |
| R & a Coffee Ltd | Hospitality | 2022 |
| R & a Plastering Ltd | Construction | 2019 |
| R & S Coffee Ltd | Hospitality | 2019 |
| R & Z Medical Services Ltd | Professional & scientific | 2007 |
| R Harb Limited | Health & social care | 2023 |
| R Horner Services Limited | Professional & scientific | 2025 |
| R Hotels Limited | Hospitality | 2009 |
| R Kehoe Limited | Health & social care | 2009 |
| R O'Donovan Medicolegal Limited | Health & social care | 2017 |
| R Sattin Limited | Health & social care | 2016 |
| R Singh-Verma Limited | Health & social care | 2012 |
| R&R Treatments Ltd | Other services | 2024 |
| R,P,W Fabs Ltd | Manufacturing | 2026 |
| RA Comms Ltd | Information & communication | 2019 |
| Racefield Consulting Ltd | Professional & scientific | 2024 |
| Racefield Holdings Limited | Financial services | 2026 |
| RAD Ortho Limited | Health & social care | 2022 |
| Radius Pharma Limited | Real estate | 2010 |
| Radius Property Group Ltd | Real estate | 2021 |
| Radley Skirving Limited | Real estate | 2023 |
| Radnor Medical Limited | Health & social care | 2024 |
| Rafr Properties Ltd | Real estate | 2020 |
| Raging Roar Limited | Professional & scientific | 2019 |
| Rahil Saggar Group Ltd | Real estate | 2023 |
| Rail Skips UK Limited | Other services | 2025 |
| Railway Handforth Ltd | Hospitality | 2024 |
| Rainbow Ridg Day Nursery Ltd | Health & social care | 2024 |
| Raine Advisory Limited | Professional & scientific | 2018 |
| Rainman Enterprises Ltd | Administrative & support | 2025 |
| Rallyworld Limited | Arts & recreation | 2001 |
| Ram+N Limited | Construction | 2025 |
| Rami Goussous Ltd | Professional & scientific | 2025 |
| RAN Medical Services Ltd. | Health & social care | 2016 |
| Rana and Munnazza Properties Limited | Real estate | 2024 |
| Rand Al-Nashi Ltd | Real estate | 2023 |
| Raoulina Homes Ltd | Construction | 2020 |
| Rapid Response IT Ltd | Information & communication | 2011 |
| Rava Biocare Ltd | Health & social care | 2025 |
| Ravensburg Property Limited | Real estate | 2024 |
| Ravenscroft Psychology Services Ltd | Administrative & support | 2016 |
| RAW Finds Limited | Wholesale & retail | 2024 |
| RAW Food Garden Ltd | Manufacturing | 2015 |
| RAY ENT Ltd | Health & social care | 2025 |
| Raynmore Ltd | Construction | 2023 |
| Raynor BID Consultancy Limited | Administrative & support | 2012 |
| Razorbill Properties Ltd | Real estate | 2013 |
| RB Creative Studio Ltd | Information & communication | 2018 |
| RBR Medical Services Limited | Health & social care | 2015 |
| Rcms Finance Limited | Financial services | 2018 |
| RDF Contractors Limited | Other services | 2019 |
| RDM Management Limited | Households | 2016 |
| Re:Volve Property Services II Ltd | Real estate | 2025 |