| Company | Timeline | Status | |
| The Sherlock Holmes International Society Limited Director • Director | 1 Aug 2008←2 Years 8 Months→1 Apr 2011 | Dissolved | |
| The Sherlock Holmes International Society Limited Director • Director | 14 Jul 2004←8 Months→24 Mar 2005 | Dissolved | |
| The Sherlock Holmes Museum Limited Director • Director | 30 Sep 1998←12 Years→1 Mar 2011 | Dissolved | |
| Rollerteam Limited Director • Director | 5 Dec 1991←19 Years→1 Mar 2011 | Active | |
