| Rigual (UK) Limited | Wholesale & retail | 2017 |
| RIJ Food Ltd | Hospitality | 2022 |
| Rijen Holdings Ltd | Financial services | 2023 |
| Rikardo Ltd | Transport & logistics | 2025 |
| Rikaz Global Ltd | Professional & scientific | 2026 |
| Rikesh Bathia Consultancy Limited | Financial services | 2018 |
| Rikesh Patel Ltd | Construction | 2022 |
| Rikhu Ltd | Real estate | 2019 |
| Riley Register Spares Limited | Wholesale & retail | 1987 |
| Riley's Camper Vans Ltd | Administrative & support | 2020 |
| Riley's Courier & Removals Ltd | Transport & logistics | 2019 |
| Riley's Packaging and Storage Limited | Administrative & support | 2020 |
| Rimas Jewellery Ltd | Wholesale & retail | 2026 |
| Rimily Homes Ltd | Construction | 2020 |
| Rimpal Nata Property Investments Limited | Real estate | 2024 |
| Rinehill Limited | Other services | 1996 |
| Ring of Bells Limited | Hospitality | 2014 |
| Ring of Vapes Ltd | Wholesale & retail | 2020 |
| RING2GO Taxis Ltd | Transport & logistics | 2025 |
| Ringwood Haulage Ltd | Transport & logistics | 2014 |
| RIO & Rico Development Limited | Real estate | 2021 |
| RIO Brothers Properties Limited | Real estate | 2018 |
| RIO Carz UK Ltd | Wholesale & retail | 2026 |
| RIO Property Management Limited | Real estate | 2023 |
| Ripley Properties Limited | Real estate | 2015 |
| Rippin's Books Limited | Information & communication | 1928 |
| Ripple AI Ltd | Information & communication | 2025 |
| Ripple Partners Ltd | Professional & scientific | 2012 |
| Riqqa Ltd | Wholesale & retail | 2023 |
| RIR13 Investments Ltd | Real estate | 2023 |
| Rise Asset Investments Limited | Real estate | 2023 |
| Rise Driving Academy Ltd | Education | 2025 |
| Rise Global Ltd | Education | 2025 |
| Rise Healthcare Engineers Limited | Manufacturing | 2023 |
| Rise Higher Productions Ltd | Information & communication | 2020 |
| Rise Living Ltd | Real estate | 2021 |
| Rise Love & Bloom Limited | Wholesale & retail | 2022 |
| Rise N Design (NW) Ltd | Extraterritorial | 2022 |
| Rise Property Partners Limited | Real estate | 2025 |
| Rise Residences Ltd | Hospitality | 2026 |
| Rise Social Media Club Ltd | Professional & scientific | 2025 |
| RISE2TOP Ltd | Administrative & support | 2023 |
| Risehow Transport Ltd | Transport & logistics | 2014 |
| Risepoint Developments Ltd | Real estate | 2025 |
| Risexstore Ltd | Wholesale & retail | 2026 |
| Rishaan Ltd | Administrative & support | 2024 |
| Rishi Builder Ltd | Construction | 2024 |
| Rising Care Services Ltd | Health & social care | 2016 |
| Rising Legal Services Ltd | Professional & scientific | 2025 |
| Rising SON Estates Ltd | Real estate | 2025 |
| Rising Sun Foods Limited | Hospitality | 2024 |
| Rising Sun Logistics Limited | Transport & logistics | 2024 |
| Rising Sun Motors Limited | Wholesale & retail | 2023 |
| Rising Sun Overseas Limited | Real estate | 2019 |
| Rising Sun Pubs and Restaurants Limited | Hospitality | 2024 |
| Rising Sun Takeaways Limited | Hospitality | 2023 |
| Rising Sun Tyres & Car Wash Limited | Wholesale & retail | 2024 |
| Rising Sun Used Car Sales Limited | Wholesale & retail | 2024 |
| Rising Sun Wholesale Tyres Limited | Wholesale & retail | 2024 |
| Ristal Cleaning Ltd | Administrative & support | 2025 |
| Risten Global Ltd | Wholesale & retail | 2024 |
| Rita Homes Ltd | Real estate | 2017 |
| Ritaroshani Limited | Hospitality | 2016 |
| Ritchie Consultancy Limited | Professional & scientific | 2014 |
| Ritika LC Limited | Wholesale & retail | 2024 |
| Rituals Arts Jewellery Ltd | Wholesale & retail | 2020 |
| Ritz Images Ltd | Information & communication | 2016 |
| Ritzy Healthcare Ltd | Health & social care | 2023 |
| Riva Lily Estate Agent Ltd | Real estate | 2024 |
| River Buildings Management Company Limited | Households | 2012 |
| River Care Agency Limited | Health & social care | 2023 |
| River Meadow Farm Ltd | Wholesale & retail | 2023 |
| River Property Holdings Ltd | Real estate | 2021 |
| River Valley Investments Limited | Real estate | 2024 |
| Rivera Estates Ltd | Hospitality | 2011 |
| Riverdale (Syston) Management Company Limited | Households | 2007 |
| Rivergate Homes Ltd | Real estate | 2026 |
| Riverpharma Ltd | Transport & logistics | 2020 |
| Rivers Properties Ltd | Real estate | 2018 |
| Rivers Run Red Ltd | Professional & scientific | 2022 |
| Riversdale Projects Ltd | Administrative & support | 2022 |
| Rivershore Investments Ltd | Real estate | 2023 |
| Riverside Accounting Services Ltd | Professional & scientific | 2009 |
| Riverside Automotive Ltd | Wholesale & retail | 2022 |
| Riverside BKP Ltd | Real estate | 2024 |
| Riverside Boarding Kennels Ltd | Other services | 2024 |
| Riverside Bridge PUB Co Ltd | Hospitality | 2020 |
| Riverside Corporate Events Ltd | Information & communication | 2017 |
| Riverside Fencing Ltd | Construction | 2025 |
| Riverside Mews Field Management Ltd | Households | 2012 |
| Riverside Solutions (UK) Ltd | Other services | 2025 |
| Riverside SW Engineering Ltd | Information & communication | 2017 |
| Riversway Care Limited | Health & social care | 1995 |
| Riverview Motors Ltd | Wholesale & retail | 2026 |
| Rivia Health Ltd | Wholesale & retail | 2020 |
| Rivia Properties Ltd | Real estate | 2020 |
| Rivin Ltd | Manufacturing | 2020 |
| Rivus Auctions Ltd | Administrative & support | 2025 |
| Rivvar Limited | Information & communication | 2025 |
| Rivy Homes Ltd | Real estate | 2024 |