| Alexander Easton | Director | 1 Jan 2017 | 15 Aug 2018 | British | 61 years |
| Allan Jerome Hirst | Director | 26 Aug 2005 | 13 Aug 2020 | British | 77 years |
| Anthony Francis Martin | Director | 1 May 2010 | 1 Jun 2021 | Irish | 72 years |
| Cathryn Elaine Eggington | Secretary | 8 Nov 2004 | 28 Apr 2006 | British | - |
| Christopher Jonathan Britten | Director | 1 May 2014 | 31 May 2016 | British | 59 years |
| Felicity Jane Gabbay | Director | 21 Jun 2002 | 8 Sept 2016 | British | 74 years |
| Ivo Therese Franciscus Timmermans | Director | 5 Jul 2004 | 1 Dec 2006 | Dutch | 66 years |
| Lucy Elizabeth Block | Director | 30 Aug 2000 | 5 Sept 2018 | British | 62 years |
| Lucy Elizabeth Block | Secretary | 30 Aug 2000 | 18 Sept 2003 | British | - |
| Lucy Elizabeth Block | Secretary | 28 Apr 2006 | 5 Sept 2018 | British | - |
| Martin David Howard Bloom | Director | 21 Jun 2002 | 26 Aug 2005 | British | 74 years |
| Robert Dwyer Nolan | Director | 22 Feb 2007 | 31 Oct 2019 | Irish | 83 years |
| Susan Elizabeth Dixon | Secretary | 18 Sept 2003 | 8 Nov 2004 | British | - |
| Timothy Shan Rea | Director | 13 Aug 2020 | 3 Feb 2022 | British | 59 years |