| Charles John Ferguson Davie | Director | 18 Dec 2012 | 6 May 2015 | British | 47 years |
| Graham Bryan Stanley | Director | 16 Jun 2008 | 6 May 2015 | British | 62 years |
| Graham Robert Sidwell | Director | 2 Nov 2007 | 13 Dec 2013 | British | 72 years |
| Ian John Aston | Director | 18 Dec 1991 | 30 Aug 2001 | British | 71 years |
| John Anthony Sowden | Director | 18 Dec 1991 | 1 Jan 1995 | British | 81 years |
| John Anthony Sowden | Secretary | 18 Dec 1991 | 1 Jan 1995 | British | - |
| Marc Edward Charles Gilbard | Director | 16 Jun 2008 | 6 May 2015 | British | 63 years |
| Mark William Anderson | Director | 16 Sept 2019 | 23 Jun 2020 | British | 47 years |
| Neal Morar | Director | 6 May 2015 | 3 Oct 2017 | British | 55 years |
| Neal Morar | Secretary | 6 May 2015 | 3 Oct 2017 | - | - |
| Nicholas William John Edwards | Director | 18 Dec 2012 | 6 May 2015 | British | 52 years |
| Nigel Maurice Armstrong | Director | 18 Dec 1991 | 2 Nov 2007 | British | 75 years |
| Nigel Maurice Armstrong | Secretary | 24 Mar 1995 | 2 Nov 2007 | British | - |
| Robert Edward Gray | Director | 6 May 2015 | 24 Oct 2018 | British | 48 years |
| Stephen Wilfred Fawcett | Director | 18 Dec 1991 | 5 Feb 2001 | British | 80 years |
| Timothy Robin Llewelyn Sanderson | Secretary | 2 Nov 2007 | 10 Sept 2012 | British | - |
| Timothy Selwyn Jones | Director | 13 Dec 2018 | 23 Jun 2020 | British | 40 years |
| Vincent Frederic Marc Vernier | Director | 6 Oct 2017 | 8 Jul 2019 | French | 47 years |
| Vincent Vernier | Secretary | 6 Oct 2017 | 8 Jul 2019 | - | - |
| William Elliot | Director | 18 Dec 1991 | 2 Nov 2007 | British | 80 years |