| Company | Timeline | Status | |
| Castle Group Limited Director • Noise Consultant | 17 Jul 1995←4 Years→31 Dec 1999 | Active | |
| Chesterfield Golf Club,Limited Director • Company Director | 4 Apr 1992←4 Years→24 Feb 1997 | Active | |
| Castle Associates Limited Director • Noise Consultant | 31 Dec 1991←8 Years→31 Dec 1999 | Active | |
