| Rapport Property Solutions Limited | Real estate | 2020 |
| Rapport Security Solutions Ltd | Administrative & support | 2013 |
| RAR Store Ltd | Wholesale & retail | 2025 |
| Raven K9 Ltd | Other services | 2024 |
| Raven Property Services Ltd | Real estate | 2019 |
| RAY & Co Surveyors Ltd | Professional & scientific | 2024 |
| Rayleigh Lanes Limited | Arts & recreation | 2011 |
| Rayleigh Optical Limited | Health & social care | 2014 |
| RC Decals Limited | Wholesale & retail | 2022 |
| RC Trading Fitness Ltd | Wholesale & retail | 2026 |
| RCT Power Services Limited | Administrative & support | 2019 |
| RD Management Ltd | Professional & scientific | 2021 |
| RDC Lifts & Electrical Ltd | Construction | 2025 |
| RDM Electrical Contractors (Southend) Ltd | Extraterritorial | 2008 |
| Re.Light London Limited | Wholesale & retail | 2025 |
| Readylift Limited | Transport & logistics | 2026 |
| Real Diamond Ltd | Wholesale & retail | 2019 |
| Recce Site Investigation Limited | Other services | 2022 |
| Recipe for Results Ltd | Manufacturing | 2014 |
| Recovery & Insolvency Services Limited | Administrative & support | 2023 |
| Rectory Road Support Services Limited | Administrative & support | 2020 |
| Red Dragon Tech Limited | Information & communication | 2016 |
| Redbook Corporate Services Ltd | Professional & scientific | 2018 |
| Redman Engineering Limited | Manufacturing | 2010 |
| Reds Kickz Limited | Wholesale & retail | 2020 |
| Reena Engineering Limited | Construction | 2010 |
| Refine Design Ltd | Professional & scientific | 2023 |
| Regal Court Limited | Health & social care | 2018 |
| Regent Classic Organs Ltd | Extraterritorial | 2014 |
| Registry of Master Bioresonance Practitioners Ltd | Other services | 2024 |
| Regrisk Legal Solutions Limited | Professional & scientific | 2024 |
| REL (Maldon) Limited | Construction | 2018 |
| Reldas Ltd | Professional & scientific | 2014 |
| Reldas Pearl Properties Ltd | Real estate | 2020 |
| Reluxe Investment Ltd | Real estate | 2022 |
| Reminisce Dance Limited | Arts & recreation | 2015 |
| Rems Carkeys Ltd | Manufacturing | 2021 |
| Remus Metal Fabrications Limited | Manufacturing | 2016 |
| Renaissance Media Ltd | Information & communication | 2006 |
| Rendex Facades Ltd | Construction | 2012 |
| Resolve Heating & Plumbing Services Ltd | Construction | 2023 |
| RESPONSE42 Limited | Professional & scientific | 2018 |
| Retailzone Limited | Wholesale & retail | 2019 |
| Revive Drive Ltd | Administrative & support | 2024 |
| REX Electrical (Essex) Limited | Construction | 2011 |
| Rexton Realty Ltd | Real estate | 2025 |
| RFC Portfolio Limited | Other services | 2018 |
| RFC Property Limited | Other services | 2018 |
| RFE Investments Limited | Real estate | 2022 |
| RFG Industries Ltd | Wholesale & retail | 2022 |
| RFH Travel Ltd | Administrative & support | 2023 |
| Rheas Bespoke Bakes Limited | Wholesale & retail | 2022 |
| Rich Fabrication Services Limited | Construction | 2021 |
| Richfaith Ltd | Health & social care | 2023 |
| Rifleman's Rest Holiday Lets Ltd | Hospitality | 2021 |
| Rifles Security Solutions Ltd | Administrative & support | 2019 |
| RIO Leisure&Social Ltd | Wholesale & retail | 2022 |
| Riverhills Homes Ltd | Construction | 2022 |
| Rkco Limited | Professional & scientific | 2017 |
| RKD Maintenance Limited | Construction | 2022 |
| Rljj Recycling Ltd | Water & waste | 2018 |
| RMT Driveways Patios Ltd | Administrative & support | 2025 |
| Road Shack Limited | Hospitality | 2015 |
| Roadside Recovery Limited | Wholesale & retail | 2022 |
| Robert E LEE Limited | Construction | 1994 |
| Robert Nash Butchers Limited | Wholesale & retail | 2013 |
| Robertson Glazing & Home Improvements Ltd | Construction | 2020 |
| Rocket Connect Ltd | Information & communication | 2019 |
| Rocketship Investments Limited | Real estate | 2017 |
| Rocketship Investments Markt-Int Ltd | Financial services | 2017 |
| Rocksworth Ltd | Real estate | 2018 |
| Rodemi Health Ltd | Health & social care | 2026 |
| Roffey Ltd | Construction | 2021 |
| Roland Lodge Daycare Limited | Education | 2024 |
| Romford Meat Market Limited | Wholesale & retail | 2017 |
| Romford Tools Limited | Wholesale & retail | 1999 |
| Ronan Seal Fitness Ltd | Arts & recreation | 2018 |
| Rosal (South East) Limited | Real estate | 2020 |
| Rose Buddies Childcare Ltd | Health & social care | 2022 |
| Rose Polishing Limited | Other services | 2012 |
| Roseteq Softwares Ltd | Information & communication | 2026 |
| Ross Stokes Antiques Limited | Wholesale & retail | 2019 |
| Rossy A.B.K Empire Limited | Wholesale & retail | 2022 |
| Roterra Services Ltd | Administrative & support | 2016 |
| Rowi Trading Ltd | Extraterritorial | 2016 |
| Royal Court Management Company Limited | Real estate | 2003 |
| Roylence Limited | Wholesale & retail | 2024 |
| RP Stunts Limited | Arts & recreation | 2021 |
| RPC Watch Services Limited | Other services | 2019 |
| RPH Services Limited | Construction | 2023 |
| RR CUE Cases Ltd | Manufacturing | 2018 |
| Rrrm Consulting Ltd | Information & communication | 2026 |
| RT Partners Ltd | Construction | 2025 |
| RTJ Property Limited | Real estate | 2021 |
| Rugby Design Group Limited | Administrative & support | 1995 |
| Rugby Property Developments Ltd | Administrative & support | 1993 |
| Runnymede Wealth Management Ltd | Financial services | 2020 |
| Runroosters Limited | Hospitality | 2024 |
| Russell Webster Limited | Other services | 2018 |
| Rutherford Residential Surveying Limited | Other services | 2023 |