| Rindera Ltd | Wholesale & retail | 2020 |
| Ringstroll Limited | Manufacturing | 1977 |
| Ripple Road Property Ltd | Real estate | 2021 |
| Rise PB Limited | Administrative & support | 2024 |
| Rise UP Muay Thai CIC | Arts & recreation | 2025 |
| Risedale Properties Limited | Administrative & support | 2011 |
| Riseheights Limited | Construction | 1990 |
| Rising Star Dreams Limited | Real estate | 2018 |
| Rising Star Global Ltd | Real estate | 2015 |
| Risqué Ltd | Wholesale & retail | 2019 |
| Ritari Group Ltd. | Professional & scientific | 2018 |
| Ritu Dhariwal Limited | Health & social care | 2008 |
| River Road Store Ltd | Wholesale & retail | 2023 |
| Rivergolden Clothings Ltd | Wholesale & retail | 2024 |
| Riverside Buntingford Limited | Transport & logistics | 2019 |
| Riverway Investments Holdings Limited | Real estate | 2018 |
| Riverway Investments Limited | Real estate | 2014 |
| Rizq Solutions Ltd | Construction | 2011 |
| RJD BI Solutions Limited | Professional & scientific | 2026 |
| RJH Commercial Property Limited | Construction | 2022 |
| RJK Homes Limited | Real estate | 2024 |
| RK Joinery Holding Ltd | Financial services | 2020 |
| RK Motoring Ltd | Wholesale & retail | 2023 |
| Rkay Construction Limited | Construction | 2021 |
| Rkay Property Services Limited | Other services | 2016 |
| Rkdk Limited | Real estate | 2024 |
| Rkpi Holding Ltd | Financial services | 2020 |
| RM Bespoke Floors Ltd | Construction | 2025 |
| RM Growth Investments Ltd | Professional & scientific | 2022 |
| RMC Enforcement Limited | Administrative & support | 2023 |
| RMH Associates Limited | Professional & scientific | 2009 |
| Rmmc Limited | Real estate | 2024 |
| RNH Edwards Property Ltd | Real estate | 2024 |
| RNN Chauffeurs Ltd | Transport & logistics | 2015 |
| Road and Track Ltd | Wholesale & retail | 2024 |
| Roamquest Limited | Construction | 1997 |
| Roar & Pour Ltd | Hospitality | 2025 |
| ROB Leiper Consulting Ltd | Information & communication | 2013 |
| Robconi Limited | Information & communication | 2000 |
| Robin Hood Holding Group Ltd | Real estate | 2024 |
| Robin Hood Thai Restaurant Ltd | Hospitality | 2013 |
| Robovend Limited | Information & communication | 2025 |
| Rocc Madden Limited | Information & communication | 2025 |
| Rocco Properties Ltd | Real estate | 2025 |
| Rochester Projects Limited | Construction | 2020 |
| Rochester Properties Limited | Construction | 1995 |
| Rock & Black Financial Limited | Financial services | 2019 |
| Rock and Ruby Ltd | Professional & scientific | 2021 |
| Rock Consortium Limited | Professional & scientific | 2005 |
| Rockfirepro Ltd | Public administration | 2026 |
| Rockstar AI Limited | Information & communication | 2026 |
| Rockstone Services Limited | Construction | 2025 |
| Rodic Developments Ltd | Real estate | 2023 |
| Roebuck Freehold Limited | Households | 2008 |
| Roebuck Heights Management Company Limited | Households | 2004 |
| Roebuck Resources Limited | Information & communication | 2020 |
| ROK Contract Ltd | Manufacturing | 2024 |
| Roken Corporation Ltd | Professional & scientific | 2000 |
| Roko Interiors Ltd | Construction | 2016 |
| Roliam Road Services Limited | Manufacturing | 2004 |
| Rollington Properties Limited | Real estate | 2020 |
| Rolo Fashion Ltd | Wholesale & retail | 2023 |
| Romax Contractors Ltd | Construction | 2016 |
| Ropery Works London Management Company Limited | Households | 2025 |
| Rorus Impex Ltd | Professional & scientific | 2020 |
| Rosa DE LA Cruz Limited | Wholesale & retail | 2010 |
| Rosa Mystica Ltd | Wholesale & retail | 2023 |
| Rose Court & Meadowcroft Management Company Limited | Households | 2020 |
| Rosebery House Developments Limited | Construction | 2016 |
| Rosebowl Limited | Transport & logistics | 2014 |
| Rosewood Transport Limited | Transport & logistics | 2007 |
| Rosha Consulting Ltd | Information & communication | 2020 |
| Rosl Limited | Real estate | 2006 |
| Rossi Cafe Limited | Other services | 2015 |
| Roundbook Limited | Wholesale & retail | 2017 |
| Rouse Management Limited | Administrative & support | 2019 |
| Rovewell Trading Limited | Other services | 2024 |
| Roxanne Hobbs Coaching and Consultancy Limited | Professional & scientific | 2010 |
| Roxwell RD Hand Car Wash Ltd | Wholesale & retail | 2022 |
| Roxwell Talent Limited | Administrative & support | 2020 |
| ROY and DAS Property Investments Ltd | Real estate | 2022 |
| Royal Scot Crystal Limited | Wholesale & retail | 1987 |
| Royle Close Management Company Limited | Real estate | 1975 |
| Roys Accounting Services Limited | Professional & scientific | 2012 |
| Roys Roofing Services Ltd | Construction | 2026 |
| Rpbaker Limited | Professional & scientific | 2014 |
| RRB Accountants Ltd | Professional & scientific | 2010 |
| RRB Properties Management Ltd | Real estate | 2026 |
| RS Derm Limited | Health & social care | 2025 |
| RSD Properties Limited | Real estate | 2024 |
| RSJ Brickwork & Construction Limited | Construction | 2004 |
| RSL Traders Limited | Information & communication | 2012 |
| RSM Decoration Ltd | Construction | 2025 |
| RSM Securities Limited | Financial services | 2018 |
| Rst&E Limited | Information & communication | 2013 |
| Rstream Limited | Construction | 2024 |
| RT Health Partners Limited | Health & social care | 2025 |
| RTA Interiors Ltd | Construction | 2023 |
| RTL RTM Company Ltd | Households | 2016 |
| Ruben Building and Transport Ltd | Construction | 2025 |