| Redbucket Ltd | Manufacturing | 2008 |
| Redhill Sushi Ltd | Wholesale & retail | 2017 |
| Redwaspaerialworks Limited | Construction | 2016 |
| Regen Fitness Ltd | Wholesale & retail | 2023 |
| Regency of London Limited | Transport & logistics | 2013 |
| Regis and Co Limited | Professional & scientific | 2011 |
| Regis Homes & Properties Ltd | Real estate | 2019 |
| Rehab Ready Ltd | Information & communication | 2022 |
| Rello Properties Ltd | Hospitality | 2025 |
| Remote Cleaning and FM Ltd. | Administrative & support | 2022 |
| Rencare Limited | Health & social care | 2007 |
| Rent a MOP Limited | Administrative & support | 2000 |
| Reotech Ltd | Information & communication | 2019 |
| Retoma Resources Limited | Health & social care | 2012 |
| Reverend Minister Antony Ogojor Ife-Jika | Professional & scientific | 2024 |
| Revo Property Investments Ltd | Real estate | 2021 |
| RGT Systems Ltd | Information & communication | 2017 |
| RHG Fittings Limited | Construction | 2016 |
| Rhino Models Limited | Manufacturing | 2012 |
| Rice and Spice South Surma Ltd | Hospitality | 2019 |
| Richard Chown Jewellery Ltd | Manufacturing | 2022 |
| Richleigh Property and Landscape Services Ltd | Administrative & support | 2015 |
| Rida Funeral Care Ltd | Other services | 2022 |
| Riec Ltd | Education | 2019 |
| Right Haven for Care Ltd | Health & social care | 2021 |
| Rightway Plumbing & Heating Ltd | Construction | 2013 |
| Rihno Mart Ltd | Wholesale & retail | 2026 |
| Riju Ranjita Foundation UK | Other services | 2023 |
| Rikthereson Limited | Health & social care | 2014 |
| Rising Sprouts Management Ltd | Education | 2023 |
| Rita's Catering and Events Management Limited | Hospitality | 2018 |
| Riverside Recycling Limited | Water & waste | 2025 |
| RK Accountancy & Tax Services Ltd | Professional & scientific | 2015 |
| RK Executive Cars Limited | Wholesale & retail | 2026 |
| RK Marine Solutions Limited | Financial services | 2015 |
| RKG Trades Ltd | Wholesale & retail | 2025 |
| RLG Travel Ltd | Transport & logistics | 2024 |
| RMK Eterna Ltd | Information & communication | 2023 |
| RO828 Ltd | Households | 2026 |
| Roadside Mobile Mechanics Limited | Wholesale & retail | 2018 |
| Robert Red Ltd | Construction | 2023 |
| Roberto C Services Ltd | Construction | 2022 |
| Rocket Rewards Ltd | Information & communication | 2026 |
| Rocksam Global UK Limited | Construction | 2019 |
| ROD Builders & Refurbishment Ltd | Construction | 2017 |
| Rolling UP Ltd | Hospitality | 2025 |
| Rome Database Solutions Ltd | Other services | 2024 |
| Romeo Beyram Properties Ltd | Real estate | 2024 |
| Romeos Auto Smart Repair Ltd | Wholesale & retail | 2020 |
| Roms Barber Ltd | Other services | 2026 |
| Roof Support Limited | Construction | 2018 |
| ROOT-10 Limited | Professional & scientific | 2021 |
| Ropafadzo Logistics Limited | Administrative & support | 2015 |
| Rosebeth Consult Limited | Construction | 2015 |
| Rosetta Education International Private Limited | Education | 2025 |
| Roswods UK Ltd | Wholesale & retail | 2025 |
| Rotoria Ltd | Wholesale & retail | 2020 |
| Rover Education Centre (UK) Ltd | Hospitality | 2016 |
| Rowland Fire Compliance Ltd | Public administration | 2026 |
| Roxed Ltd | Wholesale & retail | 2023 |
| Rr-Max Ltd | Wholesale & retail | 2021 |
| RRP Property Limited | Real estate | 2023 |
| RSW Properties Ltd | Real estate | 2024 |
| RT Services (London) Limited | Administrative & support | 2017 |
| RTV Properties Ltd | Real estate | 2019 |
| Rubet Buildings Limited | Construction | 2024 |
| Ruby & Amelia Properties Ltd | Real estate | 2026 |
| Rubys Property Services Ltd | Real estate | 2023 |
| Rudel Property Ltd | Real estate | 2024 |
| Rudraay Ltd | Real estate | 2024 |
| Runham Property Investments Limited | Real estate | 2024 |
| Rushax Ltd | Information & communication | 2022 |
| RVR Properties London Ltd | Real estate | 2025 |
| RW Food Ltd | Hospitality | 2024 |
| RWM Construction Ltd | Manufacturing | 2023 |
| Rygan Homes Limited | Construction | 2016 |
| Rygan Ltd | Transport & logistics | 2020 |
| S & C Rentals Ltd | Real estate | 2019 |
| S & R Building Services Limited | Construction | 2003 |
| S & T Homes Ltd | Real estate | 2024 |
| S Ashdown Management and Consultancy Services Limited | Construction | 2015 |
| S Austin Ltd | Construction | 2013 |
| S E DRY Cleaning Limited | Other services | 2023 |
| S E Laundry Limited | Other services | 2025 |
| S Horridge Property Ltd | Real estate | 2017 |
| S P Building Contractors Limited | Construction | 2012 |
| S P Gullifer Limited | Construction | 2012 |
| S Varsani & Co Limited | Real estate | 2019 |
| S&B Europe Shine Cleaning (UK) Ltd | Administrative & support | 2022 |
| S&S Finance Consultants Limited | Professional & scientific | 2024 |
| S&S O Investments Ltd | Real estate | 2026 |
| S. Horridge Limited | Information & communication | 2007 |
| Sacha Savanna Ltd | Wholesale & retail | 2019 |
| Saesha Limited | Real estate | 2025 |
| SAF Contractors Ltd | Construction | 2012 |
| Safe Work Solutions Ltd | Construction | 2025 |
| Safe-Care.Inc Limited | Health & social care | 2019 |
| Safely Does IT Ltd | Administrative & support | 2006 |
| Safeorder Ltd | Administrative & support | 2011 |
| Safety Solutions London Limited | Construction | 2025 |