| PROFESSIONAL MEDICAL REGULATORY SERVICE LIMITED | Private company limited by shares | Live |
| Professional Quality & Regulatory Resources Limited | Private company limited by shares | Live |
| Regulatory Assistance Project Limited -The- | Private company limited by shares | Live |
| Buchanan Technology and Regulatory Services Limited | Private company limited by shares | Live |
| REGULATORY SERVICES INTERNATIONAL LIMITED | Private company limited by shares | Live |
| REGULUS COMPANY LIMITED | Private company limited by shares | Dissolved |
| RegulusTech Company Limited | Private company limited by shares | Live |
| Regulux Co Limited | Private company limited by shares | Live |
| Regulux Company Limited | | Live |
| RegUniverse Limited | Private company limited by shares | Live |
| REGUS LIMITED | Private company limited by shares | Live |
| REGUS BUSINESS CENTRE LIMITED | Private company limited by shares | Live |
| REGUS CENTRE LIMITED | Private company limited by shares | Live |
| REGUS BUSINESS CONSULTANCY LIMITED | Private company limited by shares | Live |
| REGUS OFFICE CENTRE LIMITED | Private company limited by shares | Live |
| REGUS SERVICE CENTRE LIMITED | Private company limited by shares | Live |
| REGUS BUSINESS SOLUTIONS LIMITED | Private company limited by shares | Live |
| BIO Regut Limited | Private company limited by shares | Live |
| REGWIN LIMITED | Private company limited by shares | Dissolved |