| Company | Timeline | Status | |
| The Technical Theatre Preservation Group Limited Secretary • Unreported | 23 Jun 1993←18 Years→3 Nov 2011 | Active | |
| The Technical Theatre Preservation Group Limited Director • Administrator | 24 Apr 1991←20 Years→3 Nov 2011 | Active | |
| The Technical Theatre Preservation Group Limited Director • Unreported | 1 Jan 1970←41 Years→3 Nov 2011 | Active | |
