| Regrow Hair Centre Ltd | Other services | 2018 |
| Reinis Limited | Hospitality | 2024 |
| Reinspired Homes Limited | Wholesale & retail | 2025 |
| Relentless Push Limited | Hospitality | 2017 |
| Relovevo Limited | Wholesale & retail | 2025 |
| Remar Associates UK Ltd | Construction | 2016 |
| Remedist Homecare Limited | Health & social care | 2026 |
| Render Recruitment Ltd | Administrative & support | 2018 |
| Renew Beauty Clinic Limited | Other services | 2024 |
| Resolute Financial Services Ltd | Professional & scientific | 2023 |
| Restore Living Ltd | Health & social care | 2008 |
| Retreat Hair and Beauty Essex Limited | Other services | 2015 |
| Revive Loans Ltd | Financial services | 2015 |
| Revive Pilates Limited | Arts & recreation | 2024 |
| Revpie Limited | Financial services | 1976 |
| RFH Construction Limited | Construction | 2025 |
| RFH Electrical Ltd | Construction | 2022 |
| RFS Property Investments Ltd | Real estate | 2020 |
| RGR Metalwork Solutions Limited | Construction | 2018 |
| RHB Recruitment Limited | Other services | 2018 |
| Rhodair Limited | Construction | 2011 |
| Richards Property Solutions Limited | Real estate | 2007 |
| Ridder Consult Ltd | Professional & scientific | 2019 |
| Ridgeway Lettings (Leigh-On- Sea) Limited | Real estate | 2026 |
| Right Bros Limited | Wholesale & retail | 2007 |
| Right of Light Consulting Limited | Professional & scientific | 2006 |
| Riseley Beds Limited | Hospitality | 1987 |
| Rival Tees Design Ltd | Professional & scientific | 2026 |
| River Side Facilities Ltd | Construction | 2024 |
| RJ Platinum Ridge Roofing Group Limited | Construction | 2026 |
| RJ Platinum Ridge Roofing Limited | Construction | 2025 |
| RJG Consultancy Ltd | Professional & scientific | 2026 |
| RJH Facility Maintenance Ltd | Other services | 2024 |
| RJT Maintenance Ltd | Administrative & support | 2017 |
| Roadmapping Limited | Professional & scientific | 2014 |
| Roadrock (UK) Limited | Construction | 2004 |
| Roadsense Driving School Limited | Education | 2013 |
| Robert Milne Associates Ltd | Professional & scientific | 2011 |
| Robert Noonan Ltd | Financial services | 2024 |
| Robin Duffy Consulting Limited | Professional & scientific | 2007 |
| Robin Duffy Designs Limited | Professional & scientific | 2008 |
| Robinson & Co. (Rochford) Limited | Professional & scientific | 2002 |
| Robinson and Bale Ltd | Real estate | 2025 |
| Robinson Wood Works Limited | Manufacturing | 2024 |
| Robyn ALI BSL Ltd | Professional & scientific | 2024 |
| Roccolo Ltd | Financial services | 2022 |
| Rock Facades Ltd | Construction | 2022 |
| Rock Maintenance Ltd | Construction | 2022 |
| Rockface Services Limited | Professional & scientific | 2023 |
| Rockit Recruitment Limited | Administrative & support | 2008 |
| Roka G Ltd | Real estate | 2017 |
| Roksan Audio Limited | Extraterritorial | 2016 |
| Roller Doors 24 Ltd | Construction | 2016 |
| Roman Kitchens Limited | Wholesale & retail | 2021 |
| Romford EAR Clinic Limited | Extraterritorial | 2024 |
| Roof Innovations Limited | Construction | 2021 |
| Roofing HUT Limited | Construction | 2017 |
| Rook Management Ltd | Professional & scientific | 2018 |
| Rooms for the Future Limited | Hospitality | 2014 |
| Rophe Consult Ltd | Administrative & support | 2011 |
| Rory Okey Casting Ltd | Administrative & support | 2022 |
| Roseycheeks Events Limited | Professional & scientific | 2015 |
| RP Digital Management and Solutions Ltd | Professional & scientific | 2023 |
| RP PMO Ltd | Professional & scientific | 2022 |
| RPS2 Limited | Real estate | 2015 |
| RPS3 Limited | Real estate | 2018 |
| RS Digital Services Limited | Information & communication | 2011 |
| RS1975 Ltd | Information & communication | 2012 |
| RSK Shire Ltd | Real estate | 2026 |
| Rtkm Solutions Ltd | Information & communication | 2021 |
| Ruas Limited | Administrative & support | 2020 |
| Ruas Training Academy Limited | Other services | 2020 |
| Run My Practice Ltd | Information & communication | 2022 |
| Rush Services Limited | Construction | 2025 |
| Rushley Park Residents Association Limited | Households | 1985 |
| Russell Financial Solutions Ltd | Financial services | 2015 |
| Russell Made Ltd | Construction | 2026 |
| Rutland Evan Partners Limited | Administrative & support | 2019 |
| Ryan Hand Car Wash Ltd | Administrative & support | 2016 |
| Rylands Road Management Company Limited | Households | 2007 |
| S Clark Ltd | Construction | 2003 |
| S Co Financial Management Limited | Professional & scientific | 2006 |
| S Connell Ultrasound Ltd | Health & social care | 2021 |
| S P Broker Services Limited | Financial services | 2007 |
| S&Tg Property Ltd | Real estate | 2019 |
| S'Wich Group Ltd | Hospitality | 2025 |
| S.P Square 100 Limited | Wholesale & retail | 2024 |
| S6 Tree Specialists Ltd | Administrative & support | 2022 |
| S6SCAFFOLDING Ltd | Construction | 2018 |
| SA Accountancy Firm Ltd | Professional & scientific | 2024 |
| SA Gables Ltd | Wholesale & retail | 2022 |
| Saarang Events Ltd | Arts & recreation | 2024 |
| Safe Fire Protection Limited | Administrative & support | 1998 |
| Safety Matters Ltd | Construction | 2018 |
| Sakanari Limited | Real estate | 2021 |
| Salter & Salter Furniture Ltd | Manufacturing | 2022 |
| Saltire Sports Management Ltd | Arts & recreation | 2024 |
| Salvation Brands Limited | Wholesale & retail | 2023 |
| SAM Goddard Brickwork Limited | Construction | 2026 |
| SAM Wright Coaching Ltd | Education | 2021 |