| Rockstone Estates Limited | Real estate | 2018 |
| Rocky Mountain Horse UK Limited | Agriculture & fishing | 2013 |
| Rojan Properties Ltd | Real estate | 1999 |
| Roland Street Holdings Ltd | Real estate | 2021 |
| Roley Limited | Administrative & support | 2004 |
| Rolling Stock Engineering Services Ltd | Transport & logistics | 2018 |
| Rome Property Group Ltd | Real estate | 2025 |
| Rome Property Services Ltd | Professional & scientific | 2024 |
| Ronnie's Cafe & Wine Bar Limited | Hospitality | 2019 |
| Ronnie's Events Limited | Arts & recreation | 2023 |
| Roost Residential Limited | Real estate | 2021 |
| Rose and Crown Essex Ltd | Hospitality | 2023 |
| Rose and Crown P Essex Ltd | Hospitality | 2023 |
| Rosewood Interiors Ltd | Administrative & support | 2015 |
| Rosey Green Limited | Hospitality | 2024 |
| Ross Campbell Scaffolding Ltd | Construction | 2018 |
| Rosse-Solar Ltd | Construction | 2025 |
| Roy's Mechanics Ltd | Wholesale & retail | 2026 |
| RP E-Commerce Ltd | Wholesale & retail | 2023 |
| RPG Properties Ltd | Real estate | 2016 |
| Rpjm Holdings Ltd | Financial services | 2021 |
| RRC Construction Services Ltd | Construction | 2017 |
| RRW Property Ltd | Real estate | 2021 |
| RSS Innovation Ltd | Wholesale & retail | 2025 |
| RSV Properties Limited | Hospitality | 2017 |
| Rt-Bjj Ltd | Arts & recreation | 2022 |
| Rtemple Driveways Ltd | Professional & scientific | 2025 |
| RTH UK Services Limited | Construction | 2026 |
| RTW Eco Energy Limited | Construction | 2026 |
| RTW Homes Limited | Construction | 2018 |
| RTW Plumb Safe Ltd | Construction | 2018 |
| Ruairc Limited | Professional & scientific | 2010 |
| Rubber Online Limited | Manufacturing | 2011 |
| Rugged N Baldy Ltd | Professional & scientific | 2017 |
| Rumkins Properties Limited | Real estate | 2018 |
| Runningwell Road Ltd | Real estate | 2024 |
| Runwell Accountancy Practice Ltd | Professional & scientific | 2025 |
| Runwell Community Primary School Academy Trust | Education | 2011 |
| Runwell Holistic Therapy Ltd | Administrative & support | 2020 |
| Runwell Village Pre-School | Education | 2011 |
| Rushton Homes Limited | Construction | 2020 |
| Russian Radials Limited | Manufacturing | 2006 |
| RVH Flooring Ltd | Construction | 2017 |
| RVN Ltd | Other services | 2025 |
| RWB Electrical Services Ltd | Construction | 2018 |
| RWC Motor Company Ltd | Wholesale & retail | 2012 |
| RWS GAS Plumbing & Heating Limited | Wholesale & retail | 2020 |
| Ryan and Walsh Holdings Ltd | Real estate | 2019 |
| Ryan and Walsh Limited | Construction | 2011 |
| Rymax Plumbing & Heating Services Ltd | Construction | 2022 |
| Rynne Leolai Photography Limited | Professional & scientific | 2024 |
| S & J Engineering Ltd | Extraterritorial | 2007 |
| S a Animal Services Limited | Other services | 2017 |
| S a Property Essex Ltd | Real estate | 2026 |
| S Carter & SON Funeral Directors Limited | Other services | 2016 |
| S D Carpenters & Shopfitters Limited | Manufacturing | 2019 |
| S D Samuels Limited | Construction | 2008 |
| S E Railway Limited | Construction | 2021 |
| S G B Plumbing Services Ltd | Construction | 2009 |
| S Hill Plumbing and Heating Ltd | Construction | 2018 |
| S J & M Turner Ltd | Administrative & support | 2006 |
| S J Survey Limited | Construction | 2022 |
| S Quirk Ventures Ltd | Administrative & support | 2024 |
| S Rainger Consulting Ltd | Professional & scientific | 2017 |
| S W Security Limited | Construction | 2008 |
| S Ward & Co Limited | Construction | 2003 |
| S Wykes Investments Ltd | Financial services | 2023 |
| S&B Catering Limited | Hospitality | 2017 |
| S&D Coachbuilding Services Limited | Manufacturing | 2018 |
| S&J Elite Properties Limited | Real estate | 2022 |
| S&J K9 Security Ltd | Administrative & support | 2021 |
| S&S Mediclean Limited | Administrative & support | 2013 |
| S&Z Property Investment Ltd | Real estate | 2023 |
| S. Ottway Ltd | Administrative & support | 2023 |
| S.G. Hopkins Limited | Real estate | 1951 |
| S.H.Sutton(Wickford)Limited | Wholesale & retail | 1970 |
| S.U. Corporation Limited | Wholesale & retail | 1993 |
| S.Wernick & Sons (Holdings) Limited | Professional & scientific | 1961 |
| S6 Tutoring Academy Limited | Education | 2009 |
| SA Services Essex Ltd | Construction | 2023 |
| Sabari Ayyan Ltd | Hospitality | 2023 |
| Sabre Construction Services Ltd | Construction | 2024 |
| SAF Contracts Limited | Other services | 2001 |
| Safe Property Capital Ltd | Real estate | 2023 |
| Safe Property Ventures Ltd | Real estate | 2021 |
| Safe Rent Solutions Ltd | Real estate | 2024 |
| Safety, Industrial & Maintenance Ltd | Wholesale & retail | 2015 |
| Saichy Property Ltd | Real estate | 2025 |
| Sailtrain Limited | Arts & recreation | 2008 |
| Sakura ARB Training Ltd | Agriculture & fishing | 2025 |
| Salezio Limited | Administrative & support | 2023 |
| Salgez Limited | Other services | 2023 |
| Salmed Limited | Health & social care | 2019 |
| Salonica Consulting Limited | Wholesale & retail | 2009 |
| Salus Entity One Limited | Extraterritorial | 2016 |
| Salus Entity Two Limited | Extraterritorial | 2016 |
| Salus Holdings Limited | Financial services | 2023 |
| Salvatore Properties Limited | Real estate | 2025 |
| Samac Fixings Limited | Wholesale & retail | 2003 |
| Samrox Limited | Professional & scientific | 2018 |