| Premier Tyre Supplies (UK) Limited | Wholesale & retail | 2019 |
| Premorea Ltd | Manufacturing | 2025 |
| Pren-Pipe Work Limited | Construction | 2025 |
| Prestige Cars Essex Ltd | Wholesale & retail | 2025 |
| Prestige Vehicle Asset Management Ltd | Wholesale & retail | 2015 |
| Pretty Studio Limited | Administrative & support | 2010 |
| Prime Designs Automation Limited | Information & communication | 2017 |
| Primrose Property Maintenance (London) Limited | Construction | 1995 |
| Princedale Property Ltd | Households | 2025 |
| Prithvi Property Ltd | Real estate | 2022 |
| Pro Boiler Installs Ltd | Construction | 2019 |
| Pro Fencing Ltd | Construction | 2020 |
| Pro MAN Ltd | Construction | 2023 |
| Pro-Cut Diamond Drilling Ltd | Construction | 2021 |
| Process Gains Ltd | Information & communication | 2024 |
| Prodigy Football Academy Ltd | Education | 2024 |
| Project 29:7 Racing Ltd | Professional & scientific | 2025 |
| Promech Holding Services Ltd | Financial services | 2022 |
| Prop-Tech Insulation (UK) Limited | Construction | 2006 |
| Property Huddle Ventures Ltd | Real estate | 2024 |
| Prospera Care and Consulting Ltd | Health & social care | 2023 |
| Protape Drywall Ltd | Construction | 2017 |
| Proven Gym Ltd | Arts & recreation | 2020 |
| Prudential Solutions Ltd | Administrative & support | 2017 |
| PSD Contractors Limited | Construction | 2023 |
| Pubset Media Ltd | Extraterritorial | 2023 |
| Puddle Busters Limited | Construction | 2003 |
| Purapool Ltd | Manufacturing | 2025 |
| Purdy’S Paving&Landscaping Ltd | Administrative & support | 2020 |
| Pureshine Exterior Cleaning Ltd | Administrative & support | 2026 |
| Purplehaze Shoes Limited | Wholesale & retail | 2015 |
| Pvsolutions Ltd | Information & communication | 2025 |
| Pw&D Propertys Ltd | Real estate | 2026 |
| Q.T Electricals Ltd | Energy | 2025 |
| Q2 Property Services Ltd | Water & waste | 2024 |
| R & J Building Developers Limited | Construction | 2005 |
| R Atkins Electrical Limited | Construction | 2026 |
| R C Devaney Plumbing & Heating Limited | Construction | 2015 |
| R Stevens Mechanical Services Limited | Manufacturing | 2013 |
| R. Anthony-Browne and Company Limited | | 1983 |
| R. T. Building Ltd | Construction | 2007 |
| R.H Lifting Solutions Ltd | Construction | 2018 |
| R.M. Complete Services Limited | Construction | 1995 |
| R5 Consulting Ltd | Professional & scientific | 2013 |
| R5 Management Solutions Ltd | Real estate | 2021 |
| Radiant Glow by Connie Ltd | Extraterritorial | 2025 |
| RAE Ventures Ltd | Health & social care | 2014 |
| Raise a Glass UK Ltd | Hospitality | 2023 |
| Rakoonsapp Limited | Wholesale & retail | 2026 |
| Ranson NV UK Limited | Other services | 1997 |
| Rapid Lane Ltd | Wholesale & retail | 2026 |
| Rayson Welding Consultants Ltd | Professional & scientific | 2026 |
| RB Electrical Installations Limited | Construction | 2025 |
| RBH Building Contractors Limited | Construction | 2014 |
| RDC Installations Ltd | Construction | 2021 |
| Ready Engineering Ltd. | Manufacturing | 2011 |
| Recharge EV Ltd | Wholesale & retail | 2025 |
| Red Mechanical Engineering Ltd | Professional & scientific | 2020 |
| Reddingtons and Co Limited | Wholesale & retail | 2015 |
| Redeemed Care Agency Ltd | Health & social care | 2012 |
| Redsky Transportation Ltd | Transport & logistics | 2022 |
| Reduced Height Properties Limited | Real estate | 2018 |
| Reevez Ltd | Wholesale & retail | 2015 |
| Regall Attiree Limited | Hospitality | 2025 |
| Reign Property Group Ltd | Water & waste | 2023 |
| Reliable Recruitment Services UK Limited | Wholesale & retail | 2009 |
| Relyon Automotive (Essex) Limited | Wholesale & retail | 2019 |
| Renew & Reform Studio Limited | Arts & recreation | 2025 |
| Renoplan Consulting Ltd. | Professional & scientific | 2025 |
| Residenchall Limited | Real estate | 2019 |
| Residential Climate Solutions Ltd | Energy | 2022 |
| Resolute Services Limited | Health & social care | 2022 |
| Resource Place Limited | Health & social care | 2021 |
| Resource Property Ltd | Real estate | 2024 |
| Revive Building Services Limited | Construction | 2015 |
| Reynolds Security Group Ltd | Information & communication | 2025 |
| RG Raised Flooring Ltd | Construction | 2019 |
| Ridgewell Developments Limited | Real estate | 2025 |
| Ridgewell Plumbing & Heating Limited | Construction | 2014 |
| Right Estimating Ltd | Professional & scientific | 2025 |
| Ripca UK Limited | Manufacturing | 1990 |
| Riverstone Engines Ltd | Wholesale & retail | 2025 |
| RJE Property Services Limited | Construction | 2012 |
| RJO GAS Services Ltd | Construction | 2025 |
| RK Sparks Ltd | Construction | 2019 |
| RL Property Ventures Ltd | Households | 2026 |
| RLS Plumbing & Bathroom Supplies Ltd | Construction | 2018 |
| RLS Plumbing & Heating Services Ltd | Extraterritorial | 2023 |
| Roberto DTK Ltd | Transport & logistics | 2024 |
| Roberts Construction & Engineering Ltd | Other services | 2009 |
| Robul Haulage Ltd | Transport & logistics | 2021 |
| Roger Pike Associates Ltd | Administrative & support | 2001 |
| Romanamas Limited | Health & social care | 2018 |
| ROMARI3 Ltd | Real estate | 2025 |
| Romark Engineering Limited | Manufacturing | 2010 |
| Rookery Hill Timber Treatment Limited | Administrative & support | 2009 |
| Rosaro Marero Limited | Professional & scientific | 2025 |
| Rosewood Fencing Ltd | Construction | 2022 |
| Rotav Ltd | Transport & logistics | 2017 |
| Rotel Brickwork Limited | Construction | 1996 |