| Company | Timeline | Status | |
| Nortel Networks Optical Components Limited Director • Unreported | 26 Oct 1994←2 Years 10 Months→3 Sep 1997 | Active | |
| NTL (B) Limited Director • Company Director | 10 Nov 1992←2 Months→14 Jan 1993 | Active | |
| NTL (V) Director • Director | 17 Sep 1992←8 Months→2 Jun 1993 | Active | |
