| Company | Timeline | Status | |
| Blackroc Enterprise Ltd Director • Civil Engineer | 17 Jun 2024←1 Year 4 Months→Current | Active | |
| Blackroc Holdings Limited Director • Director | 19 Dec 2005←19 Years→Current | Active | |
Bluestar UK Distribution Limited Director • Director | 16 Dec 2005←5 Years→2 Sep 2011 | Dissolved | |
| Blackroc Technology Limited Secretary • Engineer | 7 Jul 2000←5 Years→17 Mar 2006 | Dissolved | |
| T G Jephcott Associates Limited Director • Managing Director | 31 May 1991←34 Years→Current | Active | |
