| Company | Timeline | Status | |
| Calco Services Limited Director • Civil Engineer | 14 Apr 2005←20 Years→Current | Active | |
C.A. Lawrence Group Limited Director • Civil Engineer | 14 Apr 2005←11 Years→12 Apr 2016 | Dissolved | |
| Calco Investments Limited Director • Chartered Civil Engineer | 8 Mar 2005←20 Years→Current | Active | |
| Jixgate Properties Limited Director • Civil Engineer | 25 Jun 1993←7 Years→15 Jun 2001 | Active | |
