| Rays Industrial Co., Limited | Manufacturing | 2019 |
| Rayshin Ltd | Extraterritorial | 2020 |
| Raysol Limited | Real estate | 1985 |
| Raysol Properties Limited | Real estate | 2010 |
| Razor Ecom Ltd | Wholesale & retail | 2022 |
| RBC (Building & Carpentry) Ltd | Construction | 2025 |
| RC Metec Ltd | Manufacturing | 2023 |
| Rch-At Limited | Wholesale & retail | 2023 |
| RCS New Inn Holdings Limited | Financial services | 2026 |
| RCS New Inn Limited | Other services | 2025 |
| RDM Property Holdings Limited | Real estate | 2023 |
| RDX Diamond Properties Limited | Real estate | 2023 |
| RE Electrical Ltd | Construction | 2024 |
| Re-Vat Consulting Limited | Professional & scientific | 2019 |
| Re-Vents Management Ltd | Hospitality | 2025 |
| Reach Industrial Ltd. | Extraterritorial | 2014 |
| Realmus Industrial Co., Limited | Professional & scientific | 2012 |
| Reavin International Trading Limited | Professional & scientific | 2010 |
| Rebecca Selbie Counselling and Psychotherapy Ltd | Health & social care | 2023 |
| Recoil Holdings Ltd | Financial services | 2020 |
| Recoil Limited | Manufacturing | 1967 |
| Recovery and Therapeutic Services Ltd | Health & social care | 2019 |
| Recruiteod Ltd | Administrative & support | 2026 |
| Recruitment Capital Ltd | Administrative & support | 2023 |
| Recruitment Marketing Services Limited | Administrative & support | 2016 |
| Recruso Ltd | Information & communication | 2012 |
| Rectory Green Management Limited | Households | 1961 |
| Rectory Grove Management Limited | Households | 1962 |
| Recursive Music Limited | Information & communication | 2014 |
| Recyclink Tech Ltd | Wholesale & retail | 2025 |
| Red Door Marketing LLP | | 2012 |
| Red DOT Media Ltd | Information & communication | 2019 |
| Red Eleven Consultancy Limited | Professional & scientific | 2010 |
| Red Knight Investments Limited | Real estate | 2021 |
| Red Melodi Ltd | Arts & recreation | 2024 |
| Red Pomegranate Technology Limited | Information & communication | 2021 |
| Red Pomelo Documentation Servicest Limited | Information & communication | 2023 |
| Red Robin Consulting Ltd | Information & communication | 2019 |
| Red Swan Digital Limited | Professional & scientific | 2025 |
| Red Swan Partners Limited | Professional & scientific | 2019 |
| Red Thread Transmedia Limited | Information & communication | 2014 |
| Redfive Sound and Vision Limited | Information & communication | 2019 |
| Redford 26 Limited | Real estate | 2019 |
| Redpoint Direct Limited | Administrative & support | 2009 |
| Redshiftlaser Technology Co., Ltd | Wholesale & retail | 2022 |
| Redu Industry Co., Ltd | Wholesale & retail | 2025 |
| Redwards Consultants Limited | Information & communication | 2012 |
| Reearth Australia Study Abroad Limited | Education | 2025 |
| Reed Consulting Services Limited | Administrative & support | 2022 |
| Reed's Properties Limited | Real estate | 2017 |
| Reegonz Machinery Co., Ltd | Extraterritorial | 2019 |
| Reel Good Media Limited | Transport & logistics | 2021 |
| Reem Saad Ltd | Health & social care | 2025 |
| Reeves Housing LLP | | 2022 |
| Reeves Property Ltd | Real estate | 2016 |
| Reflect Industry Co., Ltd | Extraterritorial | 2011 |
| Refurbio Limited | Construction | 2023 |
| Regency F.I.C Investments Limited | Real estate | 2024 |
| Regent & Wyvern Limited | Wholesale & retail | 2025 |
| Regu Fluid Control Co., Ltd. | Extraterritorial | 2021 |
| Rehosten Industrial Co., Ltd | Professional & scientific | 2017 |
| Reid Sohn Pianos Limited | Wholesale & retail | 1984 |
| Reitter JC Limited | Transport & logistics | 2025 |
| Reizo Ltd | Information & communication | 2013 |
| Rejuvenexpert Limited | Professional & scientific | 2023 |
| Reker Group Co., Ltd | Extraterritorial | 2013 |
| Release Retentions Limited | Construction | 2022 |
| Reliable Construction Group Ltd | Construction | 2023 |
| Reluxy Consumer Products Ltd | Extraterritorial | 2013 |
| Reme (Featherman) Limited | Administrative & support | 2010 |
| Reme Enterprises Limited | Administrative & support | 2000 |
| Reme International Technology Co., Ltd | Extraterritorial | 2016 |
| Remfry Roofing Limited | Construction | 2017 |
| Remiel Holdings Limited | Professional & scientific | 2000 |
| Reminn International Ltd | Extraterritorial | 2019 |
| Renaihair Co., Ltd | Professional & scientific | 2017 |
| Renaiissance International HK Limited | Manufacturing | 2014 |
| Rene BE Agri C.V.B.A. Ltd | Extraterritorial | 2023 |
| Renkatemal Property Ltd | Real estate | 2017 |
| Rennixue Ltd | Education | 2021 |
| Renodec (Property Maintenance) Limited | Construction | 1963 |
| Renoworld Energy Ltd | Extraterritorial | 2018 |
| Rentasy Limited | Wholesale & retail | 2026 |
| Rentwise Ventures Ltd | Real estate | 2025 |
| REP 12 (LOM) Limited | Information & communication | 2021 |
| REP Productions 11 Ltd | Information & communication | 2015 |
| REP Productions 12 Ltd | Information & communication | 2015 |
| REP Productions 6 Ltd | Information & communication | 2011 |
| REP Productions Documentary Ltd | Information & communication | 2016 |
| REP Productions SF Ltd | Information & communication | 2016 |
| Repack Solutions Ltd | Extraterritorial | 2022 |
| Repenic Limited | Manufacturing | 2024 |
| Replasterial Limited | Manufacturing | 2025 |
| Replink Limited | Information & communication | 2025 |
| Reppe ANN Co., Ltd | Extraterritorial | 2014 |
| Reron Internation Co., Ltd | Extraterritorial | 2019 |
| RES & Fire Alarms Ltd | Construction | 2019 |
| Rescue Glaze Ltd | Construction | 2024 |
| Reshape Fitness Gym Limited | Arts & recreation | 2021 |
| Residential Housing Limited | Real estate | 2016 |