| HELIUM COMPANY LIMITED | Private company limited by shares | Dissolved |
| HELIUM LIMITED | Private company limited by shares | Dissolved |
| HELIUM LIMITED | Private company limited by shares | Live |
| STP Helium Limited | Private company limited by shares | Live |
| Helium Capital Limited | Private company limited by shares | Live |
| Helium & Nelson Limited | Private company limited by shares | Live |
| HELIUS LIMITED | Private company limited by shares | Live |
| HELIUS CAPITAL LIMITED | Private company limited by shares | Live |
| HELIUS ENERGY CO., LIMITED | Private company limited by shares | Dissolved |
| Helius Capital Management Limited | Private company limited by shares | Live |