| Company | Timeline | Status | |
| Permanent-Way Institution (Incorporated) Director • Retired | 1 Jul 2002←4 Years→15 Sep 2006 | Active | |
| Permanent-Way Institution (Incorporated) Director • Self Employed | 1 Jan 1998←3 Years→16 Feb 2001 | Active | |
| Edgar Allen Engineering Limited Director • Company Director | 17 Aug 1991←3 Years→14 Apr 1995 | Liquidation | |
