| Andrew Oswell Bede Davies | Director | 15 Apr 2019 | 31 Oct 2025 | British | 63 years |
| Beverley Edward John Dew | Director | 12 Jan 2015 | 27 Sept 2019 | British | 55 years |
| Claudio Veritiero | Director | 6 Mar 2015 | 15 Nov 2019 | British | 53 years |
| Colin Ronald William Busby | Director | 1 Oct 1992 | 30 Jun 2004 | British | 82 years |
| Deborah Pamela Hamilton | Secretary | 8 Nov 2009 | 19 Apr 2010 | - | - |
| Deena Elizabeth Mattar | Director | 23 Nov 2001 | 12 Nov 2010 | British | 61 years |
| Duncan Valentine Brand | Director | 1 Oct 1992 | 24 Nov 2001 | British | 85 years |
| Haydn Jonathan Mursell | Director | 15 Oct 2010 | 22 Jan 2019 | British | 55 years |
| Herbert Crawford Marshall | Secretary | 1 Oct 1992 | 29 Oct 2004 | British | - |
| Hugh Edward Earle Raven | Secretary | 19 Apr 2010 | 2 Feb 2021 | - | - |
| Ian Michael Lawson | Director | 12 Jan 2006 | 21 Jun 2013 | British | 69 years |
| John Dodds | Director | 1 Oct 1992 | 31 Mar 2010 | British | 81 years |
| Martin Peter Weston Scarth | Director | 1 Oct 1992 | 7 May 2003 | British | 83 years |
| Matthew David Barton | Secretary | 30 Oct 2004 | 8 Nov 2009 | British | - |
| Michael Paul Sheffield | Director | 12 Jan 2006 | 30 Jun 2014 | British | 65 years |
| Nigel Alan Turner | Director | 6 Mar 2015 | 1 Aug 2018 | British | 61 years |
| Nigel Philip Brook | Director | 6 Mar 2015 | 1 Aug 2018 | British | 68 years |
| Philip Higgins | Secretary | 2 Feb 2021 | 16 Aug 2021 | - | - |
| Richard William Side | Director | 1 Dec 2003 | 8 Nov 2008 | British | 80 years |
| Richard William Simkin | Director | 1 Dec 2003 | 30 Jun 2011 | British | 78 years |
| Stephen Bowcott | Director | 15 Oct 2010 | 27 Apr 2015 | English | 71 years |
| Stuart John Togwell | Director | 19 Feb 2021 | 24 Jan 2023 | British | 58 years |