| Plumbline Tech Ltd | Wholesale & retail | 2019 |
| Plumbtek.Maintenance Ltd | Construction | 2023 |
| Plus Care Academy Ltd | Health & social care | 2023 |
| Plus Cleantrust Ltd | Administrative & support | 2024 |
| Plus Tenders Ltd | Professional & scientific | 2024 |
| Plusmail Limited | Wholesale & retail | 1995 |
| Pluss Group Holdings Limited | Real estate | 2025 |
| Podretreat Limited | Manufacturing | 2017 |
| Poltava Group Limited | Construction | 2025 |
| Popa Pizza Limited | Hospitality | 2024 |
| Popley Fish Limited | Hospitality | 2024 |
| Portico Academy Trust | Education | 2016 |
| Positive Impact Governance Ltd | Professional & scientific | 2023 |
| Potterstone Limited | Professional & scientific | 2020 |
| Prairie Vegan Ltd | Hospitality | 2025 |
| Premier Research & Marketing Ltd | Financial services | 2021 |
| Premier Taping Limited | Construction | 2007 |
| Premium Stone Limited | Administrative & support | 2024 |
| Presnd Limited | Hospitality | 2014 |
| Prestige Pro Property Ltd | Hospitality | 2025 |
| Prestige Temps Limited | Administrative & support | 2007 |
| Prim Motorsports Ltd | Wholesale & retail | 2026 |
| Primeguard Trading Limited | Wholesale & retail | 2025 |
| Primrose Consulting Services Ltd | Information & communication | 2025 |
| Primrose Housing Ltd | Real estate | 2022 |
| Primus Plus Healthcare Ltd | Health & social care | 2024 |
| Printech (Europe) Limited | Manufacturing | 1999 |
| Printech Solutions LLP | | 2012 |
| Priory Park Cafeteria Limited | Hospitality | 2018 |
| Prisewell Ltd | Hospitality | 2013 |
| Pristine Rides Hand Car Wash Limited | Administrative & support | 2025 |
| Pro Football Management Ltd | Arts & recreation | 2016 |
| Pro Property Lettings Limited | Real estate | 2025 |
| Pro Services Essex Ltd | Construction | 2025 |
| Professional Freelancer 451 Limited | Education | 2007 |
| Profit + Software Ltd | Information & communication | 2020 |
| Proinfotech Ltd | Professional & scientific | 2020 |
| Promising Pathways Ltd | Health & social care | 2023 |
| Properminds Limited | Professional & scientific | 2019 |
| Properties on Sea Ltd | Real estate | 2020 |
| Property by P&R Ltd | Real estate | 2023 |
| Property on Sea Ltd | Real estate | 2020 |
| Proshield Coatings Limited | Construction | 2025 |
| Protaf Ltd | Wholesale & retail | 2022 |
| Proton Therapy UK Limited | Health & social care | 2010 |
| Proton Therapy Worldwide Service Limited | Health & social care | 2021 |
| Provider Construction Limited | Construction | 2018 |
| PSK Safety Services Ltd | Professional & scientific | 2024 |
| Pt-On-Sea Ltd | Arts & recreation | 2021 |
| Ptys Limited | Real estate | 2020 |
| Public Health Design Consultants Limited | Professional & scientific | 2015 |
| Pugglen Limited | Construction | 1997 |
| Punjab Food Resources Limited | Hospitality | 2024 |
| Pureeat Group Ltd | Hospitality | 2025 |
| Purple GEM Ltd | Hospitality | 2022 |
| PV Maintenance Ltd | Construction | 2021 |
| PYB Community Ltd | Administrative & support | 2026 |
| Q Image Beauty Limited | Other services | 2013 |
| Qimage Aesthetics Academy Limited | Education | 2026 |
| QPL Interiors Limited | Construction | 2025 |
| Quarry Stone Ventures Ltd | Administrative & support | 2013 |
| Quick Print Copy & Design Limited | Wholesale & retail | 2016 |
| Quick Print Solutions Limited | Manufacturing | 2022 |
| Quintore Limited | Hospitality | 2019 |
| QUY Property Ltd | Real estate | 2024 |
| Quylity Gardens Ltd | Administrative & support | 2026 |
| R & I Project Solutions Ltd | Professional & scientific | 2008 |
| R C D CAD Solutions Ltd | Information & communication | 2017 |
| R Green Electrical Limited | Construction | 2018 |
| R&Y Solutions Ltd | Information & communication | 2021 |
| Rabusta Limited | Hospitality | 2024 |
| Rachael Enterprise Limited | Administrative & support | 2015 |
| Radiantflow Heating Limited | Other services | 2016 |
| Raduneata Limited | Administrative & support | 2019 |
| Railtrack Medicals Ltd | Health & social care | 2025 |
| Rainbow Mental Health & Community Care Ltd | Health & social care | 2023 |
| Rakela Hair Fashion Limited | Other services | 2013 |
| Rakesto Limited | Real estate | 2017 |
| RAM Tilbury Holdings Ltd | Real estate | 2024 |
| Ramen Chill Westcliff Ltd | Hospitality | 2017 |
| Ramuz Court Limited | Real estate | 2011 |
| Ramuz Estate Ltd | Real estate | 2025 |
| Ramuz Ltd | Real estate | 2017 |
| Ranch Creative Limited | Professional & scientific | 2018 |
| RAS Trading Group Ltd | Wholesale & retail | 2023 |
| Rathnaa Enterprises Ltd | Health & social care | 2022 |
| Rathod Homes Ltd | Real estate | 2023 |
| Ravenscourt Brentwood Limited | Households | 1992 |
| RAY of Light Youth Mentoring CIC | Other services | 2025 |
| RB Professional Painters Ltd | Construction | 2024 |
| RBH Electrical Solutions Ltd | Construction | 2026 |
| Rcls Property Ltd | Households | 2025 |
| RCP Interiors Ltd | Construction | 2025 |
| RDL Haulage Limited | Transport & logistics | 2014 |
| Real Home Investments Ltd | Real estate | 2022 |
| Realistic 3D Limited | Information & communication | 2025 |
| Rebben Holdings Ltd | Real estate | 2019 |
| Rebourne Fitness & Nutrition Ltd | Arts & recreation | 2009 |
| Red Shalford Limited | Hospitality | 2026 |
| Red Wine Ltd | Arts & recreation | 2010 |