| Positive Signs Community C.I.C. | Professional & scientific | 2024 |
| Positive Signs Ltd | Professional & scientific | 2005 |
| Power & Light Co. Limited | Professional & scientific | 1997 |
| Ppcp Group Ltd. | Information & communication | 2019 |
| PPP Washing Ltd | Administrative & support | 2023 |
| PR Payroll Services Ltd | Professional & scientific | 2020 |
| PRE Retirement Mortgage Solutions Ltd | Financial services | 2014 |
| Precision Plumbing Heating Ltd | Construction | 2024 |
| Pride of Bengal Ltd | Wholesale & retail | 2022 |
| Prime Heating & Cooling Ltd | Energy | 2025 |
| Prime Time Staffing Limited | Administrative & support | 2020 |
| PRIME4 Real Estate Ltd | Real estate | 2025 |
| Primecare Estates Limited | Real estate | 2021 |
| Primeflo Limited | Real estate | 2016 |
| Primr Studio Ltd | Information & communication | 2025 |
| Primrose Gate Residents Ltd | Real estate | 2018 |
| Pristine Paving Patios & Brickwork Ltd | Construction | 2022 |
| Private & Commercial (Life & Pensions) Consultants Limited | Financial services | 1987 |
| Pro FX Capital Ltd | Wholesale & retail | 2014 |
| Pro Paint Specialist Ltd | Construction | 2011 |
| Pro Project Promotions Limited | Hospitality | 2025 |
| Product Growth Ltd | Professional & scientific | 2024 |
| Proficient Essex Ltd | Construction | 2023 |
| Progress Property Solutions UK Ltd | Real estate | 2021 |
| Progressive Works Limited | Construction | 2023 |
| Project Four Five Group Ltd | Professional & scientific | 2023 |
| Project Pros Limited | Information & communication | 2012 |
| Projex Event Management Limited | Other services | 2018 |
| Propcode Ltd | Information & communication | 2015 |
| Property by the Johnsons Limited | Real estate | 2017 |
| Property Maintenance & Heating Services Ltd | Construction | 2021 |
| Proptech Enterprise Limited | Information & communication | 2026 |
| Prosperity 71 Limited | Hospitality | 2024 |
| Proway Window Cleaning Company Limited | Administrative & support | 1987 |
| Prvn Prep Ltd | Hospitality | 2022 |
| PS MEP Ltd | Professional & scientific | 2026 |
| Psab Property Ltd | Real estate | 2025 |
| PSM Contractors Ltd | Construction | 2018 |
| Psychnosis Films Ltd | Information & communication | 2015 |
| Psychnosis Productions Ltd | Information & communication | 2015 |
| Psychnosis Publishing Ltd | Information & communication | 2015 |
| PT MAC Construction Ltd | Construction | 2013 |
| Pure Glass Ltd | Administrative & support | 2014 |
| Pure Imaginations With Gemma Ltd | Education | 2014 |
| Pure Tender Limited | Information & communication | 2022 |
| Purple Pint Ltd | Hospitality | 2025 |
| PV Electrical Services Limited | Construction | 2018 |
| Pyour Nourished Ltd | Manufacturing | 2026 |
| Q Tech Property Maintenance Limited | Construction | 2005 |
| Qadeer Property Group Ltd | Real estate | 2019 |
| QGC Consultancy Ltd | Financial services | 2026 |
| Quality Coaching Limited | Professional & scientific | 2007 |
| Quality Tanker Services Ltd | Wholesale & retail | 2020 |
| Quantum Sustainability Group Ltd | Wholesale & retail | 2021 |
| Quotesure Limited | Financial services | 1999 |
| R & a Kapital Consultancy Ltd | Financial services | 2023 |
| R & a Property Group Ltd | Real estate | 2021 |
| R & J Building Maintenance Services Ltd | Construction | 2022 |
| R G Consultancy Limited | Professional & scientific | 2001 |
| R J Piller Limited | Information & communication | 2014 |
| R Maguire Contracts Limited | Construction | 2016 |
| R&S Building Ltd | Construction | 2017 |
| R&St Consulting Ltd | Professional & scientific | 2017 |
| R-Zone Enterprises Limited | Transport & logistics | 2012 |
| R. R. Construction Limited | Construction | 1983 |
| R.D.S Design and Build Ltd. | Construction | 2012 |
| R.Mccarthy Lettings Ltd | Real estate | 2022 |
| Rainbow Events Limited | Arts & recreation | 2023 |
| Raised by Wolves Productions Ltd | Administrative & support | 2017 |
| Ramgonj Welfare Association UK Ltd | Professional & scientific | 2023 |
| Raspberry (Interiors) Limited | Other services | 2005 |
| RAW Building & Construction Services Limited | Construction | 2021 |
| Rcdt Services Limited | Professional & scientific | 2021 |
| RCL UK Group Ltd | Construction | 2020 |
| RCM Aggregates Ltd | Water & waste | 2025 |
| RDT Kentt Ltd | Transport & logistics | 2022 |
| REA Construction Ltd | Construction | 2011 |
| REA Construction Management Ltd | Construction | 2022 |
| REA Properties Ltd | Real estate | 2017 |
| Reactive Physiotherapy Ltd | Public administration | 2025 |
| Reads Home Improvements Ltd | Construction | 2017 |
| READY2GOLF Limited | Information & communication | 2020 |
| Real English Inns Limited | Hospitality | 2011 |
| Reality Capital Ltd | Financial services | 2020 |
| Reality Investments Ltd | Real estate | 2015 |
| Reality Lending Ltd | Financial services | 2026 |
| Reality Management Ltd | Professional & scientific | 2017 |
| Recreate Tooth Ltd | Education | 2023 |
| Redacted Intelligence Ltd. | Administrative & support | 2024 |
| Reed Electrical Services Limited | Construction | 2005 |
| Reel Time Productions Limited | Information & communication | 2021 |
| Reely LLP | | 2026 |
| Reevamp Corporations Limited | Other services | 2023 |
| Regency Contract Services Limited | Construction | 2017 |
| Regeneris Partners Ltd | Administrative & support | 2024 |
| Regional Tree Services Ltd | Administrative & support | 2011 |
| Renott Properties Ltd | Households | 2025 |
| Renovaint Ltd | Construction | 2025 |
| Repz Limited | Professional & scientific | 2019 |
| Resharp Holdings Limited | Real estate | 2020 |