| Company | Timeline | Status | |
| RJ Cox Contracting Limited Director • Director  | 1 Apr 2015←10 Years→Current  | Active  | |
| R.J. Cox Civil Engineers Ltd Director • Director  | 7 Mar 2002←23 Years→Current  | Active  | |
| R.J. Cox Civil Engineers Ltd Secretary • Director  | 7 Mar 2002←21 Years→16 Mar 2023  | Active  | |
