| Company | Timeline | Status | |
| Summerfield Racing Limited Director • Director | 23 Mar 2005←17 Years→19 Jul 2022 | Dissolved | |
| Summerfield Racing Limited Secretary • Director | 23 Mar 2005←17 Years→19 Jul 2022 | Dissolved | |
| MMD Summerfield Ltd Director • Engineer | 2 Mar 1991←13 Years→30 Jun 2004 | Active | |
