| Company | Timeline | Status | |
| Iwis Drive Systems Limited Director • Company Director | 18 Oct 1994←6 Years→13 May 2001 | Active | |
Split Roller Bearing Co. Limited Director • Company Director | 15 Mar 1994←7 Years→13 May 2001 | Dissolved | |
Split Roller Bearing Co. Limited Secretary • Company Director | 15 Mar 1994←7 Years→13 May 2001 | Dissolved | |
| Silverstone Advisory Services Limited Director • Company Director | 10 Nov 1992←10 Months→10 Sep 1993 | Active | |
| Silverstone Racing School Limited Director • Company Director | 10 Nov 1992←10 Months→10 Sep 1993 | Active | |
| The BRDC Limited Director • Company Director | 10 Nov 1992←10 Months→10 Sep 1993 | Active | |
| Silverstone Grand Prix Limited Director • Company Director | 10 Nov 1992←10 Months→10 Sep 1993 | Active | |
| Silverstone Club Limited Director • Company Director | 10 Nov 1992←1 Year 5 Months→24 Apr 1994 | Active | |
| Silverstone Estates Limited Director • Company Director | 10 Nov 1992←1 Year 5 Months→24 Apr 1994 | Active | |
| Silverstone Circuits Limited Director • Company Director | 10 Nov 1992←1 Year 5 Months→24 Apr 1994 | Active | |
