| Company | Timeline | Status | |
Margaret Houston Limited Director • Director | 7 Jul 2010←7 Years→30 Jan 2018 | Dissolved | |
| GDST Academy Trust Director • Retired | 16 Nov 2006←3 Years→31 Aug 2010 | Active | |
The Girls' Day School Trust (1872) Director • Retired | 1 Sep 2004←4 Years→30 Apr 2009 | Dissolved | |
| The Girls' Day School Trust Director • Retired | 1 Sep 2004←4 Years→31 Aug 2008 | Active | |
