| Company | Timeline | Status | |
| Penzer Street (Management) Limited Director • Company Director | 19 Oct 1995←1 Year→11 Nov 1996 | Active | |
| Southdown Materials Testing Limited Director • Director | 19 Mar 1992←30 Years→21 Nov 2022 | Active | |
| Southdown Materials Testing Limited Secretary • Company Secretary | 19 Mar 1991←31 Years→14 Sep 2022 | Active | |
