| Company | Timeline | Status | |
| Proteus Environmental Communications Limited Secretary • Unreported | 10 Nov 2003←22 Years→Current | Active | |
| Proteus Environmental Services Limited Secretary • Unreported | 10 Nov 2003←22 Years→Current | Active | |
Proteus Financial Communications Limited Secretary • Unreported | 10 Nov 2003←15 Years→12 Feb 2019 | Dissolved | |
| Proteus Public Relations Limited Secretary • Unreported | 10 Nov 2003←22 Years→Current | Active | |
Proteus Corporate Communications Limited Secretary • Unreported | 10 Nov 2003←15 Years→12 Feb 2019 | Dissolved | |
