| Promed Cleaning Services (Holdings) Limited | Administrative & support | 2025 |
| Promed Cleaning Services Ltd | Administrative & support | 2025 |
| Prominium Ltd | Information & communication | 2017 |
| Prospect IF Limited | Administrative & support | 2015 |
| PRY Consultancy Limited | Professional & scientific | 2020 |
| PS Construction Investments Ltd | Real estate | 2013 |
| PS Financial Solutions Ltd | Financial services | 2013 |
| PTH Home Improvements Ltd | Construction | 2025 |
| PTL Logistic Services Ltd | Administrative & support | 2019 |
| Pumps & Power Limited | Manufacturing | 2026 |
| Pure Natural Essentials Ltd | Manufacturing | 2023 |
| Pure Station Limited | Water & waste | 2025 |
| PV Renewable Energy Ltd | Construction | 2011 |
| PVA Aesthetics Limited | Health & social care | 2021 |
| Q Investments London Limited | Real estate | 2013 |
| Qintec Limited | Extraterritorial | 2020 |
| Quality Early Years Limited | Information & communication | 2017 |
| Quay Accounting Solutions Ltd | Professional & scientific | 2019 |
| Quint London Limited | Manufacturing | 2020 |
| Quirkies Ltd | Wholesale & retail | 2025 |
| Quivertree Consulting Limited | Professional & scientific | 2009 |
| Quoricent Limited | Extraterritorial | 2020 |
| QV Care Services Ltd | Administrative & support | 2023 |
| R & J.R.Wood Limited | Agriculture & fishing | 1962 |
| R Ellis Leisure Ltd | Arts & recreation | 2026 |
| R F Transport Limited | Transport & logistics | 2018 |
| R Gwinnell & Sons (Memorials) Limited | Manufacturing | 1997 |
| R M Meats & SON Ltd | Hospitality | 2021 |
| R&R Commercial Autos Limited | Wholesale & retail | 2021 |
| R. C. Coppin Limited | Manufacturing | 2000 |
| R28CUSTOMGARAGE Ltd | Wholesale & retail | 2022 |
| R5 Global Ltd | Professional & scientific | 2021 |
| Rabbit Hole Therapy Ltd | Health & social care | 2023 |
| Rachels SSM Limited | Health & social care | 2016 |
| Radial Services Limited | Professional & scientific | 2000 |
| Ragmarsh Farm Burger Bar Limited | Hospitality | 2018 |
| Rail Labour Group Ltd | Construction | 2023 |
| Rail OP Holdings Limited | Financial services | 2017 |
| Rail System Consulting Limited | Professional & scientific | 2020 |
| Railmed Limited | Health & social care | 2010 |
| Rainbow Studio Limited | | 1983 |
| Raines Virtual Limited | Wholesale & retail | 2019 |
| Ramsey School Developments Limited | Construction | 2017 |
| Ranell Limited | Wholesale & retail | 1991 |
| Rayland Builder Services Ltd | Construction | 2025 |
| RBF Cargocare Ltd | Transport & logistics | 1982 |
| Rbpc Ltd | Professional & scientific | 2023 |
| Rccg Hope of Glory Seed | Other services | 2026 |
| RDG Group Limited | Extraterritorial | 2018 |
| Reach Care & Consulting Ltd | Education | 2020 |
| Reach Essex Ltd | Education | 2018 |
| Reach Group Community Projects CIC | Education | 2021 |
| Reach Property Holdings Ltd | Real estate | 2020 |
| Reach Residential Care Ltd | Health & social care | 2020 |
| Reachpoint Consulting Ltd | Professional & scientific | 2026 |
| Ready Sports Limited | Arts & recreation | 2012 |
| Real Italiano Limited | Wholesale & retail | 2021 |
| Rebecca Hairdressing Limited | Other services | 2017 |
| Red Ochre Associates Limited | Professional & scientific | 2005 |
| Red Puff Limited | Real estate | 2014 |
| Red Puff London Limited | Real estate | 2014 |
| Redback Properties Ltd | Real estate | 2024 |
| Redbowran Ltd | Transport & logistics | 2021 |
| Redtop Construction Ltd | Construction | 2021 |
| Redzer Productions Limited | Information & communication | 2006 |
| Reeds Construction & Landscaping Ltd | Construction | 2025 |
| Reeves Properties Limited | Real estate | 1986 |
| Refined Designs Ltd | Real estate | 2002 |
| Regenertec Consulting Limited | Professional & scientific | 2020 |
| Rehoboth Lots Ltd | Real estate | 2025 |
| Reinforced Holdings Limited | Professional & scientific | 2023 |
| Reinforced Ltd | Professional & scientific | 2022 |
| Relight Utility Services Limited | Construction | 2015 |
| Remscape Ltd | Construction | 2022 |
| Renaissance Global Investment Ltd | Real estate | 2014 |
| Renascentiavalue World Limited | Professional & scientific | 2018 |
| Rental HQ Ltd | Information & communication | 2026 |
| Representation Media Ltd | Information & communication | 2020 |
| Resolve International Ltd | Extraterritorial | 2020 |
| Resort Marketing International Limited | Administrative & support | 2002 |
| Resultsology Limited | Professional & scientific | 2021 |
| Revcards Ltd | Other services | 2023 |
| Revive Roofing Essex Ltd | Construction | 2024 |
| Rexom Limited | Hospitality | 2015 |
| Reynolds Motorsport Ltd | Wholesale & retail | 2013 |
| RG Oakes Designs Limited | Professional & scientific | 2014 |
| RGR Media Limited | Information & communication | 2025 |
| Ribeiro Limited | Hospitality | 2021 |
| Richmond Brighton Investments 2 Limited | Real estate | 2025 |
| Richmond Brighton Investments Limited | Real estate | 2023 |
| Rick Baker (Essex) Ltd | Arts & recreation | 2013 |
| Rintoul Fabrication Ltd | Manufacturing | 2021 |
| Rivenhall Holdings Limited | Extraterritorial | 2024 |
| Rivertree Life Ltd | Financial services | 2016 |
| RJ Barlow Property Services Ltd | Construction | 2025 |
| Rj&E Services Limited | Construction | 2013 |
| RKP Properties Ltd | Real estate | 2015 |
| RMD Consult Limited | Professional & scientific | 2025 |
| Rmgas Holdings Limited | Financial services | 2025 |
| Rmht Trading Ltd | Wholesale & retail | 2026 |