| Company | Timeline | Status | |
| Sonics & Materials (UK) Limited Director • Company Director | 19 Apr 2016←1 Month→31 May 2016 | Active | |
| MDH Ultrasonics Limited Director • Director | 26 Jul 2004←16 Years→16 Mar 2021 | Dissolved | |
| Crest Ultrasonics Europe Limited Secretary • Unreported | 1 Jun 1999←3 Years→17 Sep 2002 | Active | |
| Crest Ultrasonics Europe Limited Director • Managing Director | 13 Jul 1998←4 Years→17 Sep 2002 | Active | |
