| Andrew Cossar | Secretary | 2 Aug 2014 | 29 Jun 2017 | - | - |
| Caroline Jane Sellers | Secretary | 18 Mar 1999 | 2 Aug 2014 | British | - |
| Charles Peter Johnson | Director | 24 Nov 1995 | 24 Nov 1995 | British | 80 years |
| Charles Peter Johnson | Director | 24 Nov 1995 | 12 Oct 2001 | British | 80 years |
| Christine Mary Tacon | Director | 10 May 2001 | 23 Dec 2011 | British | 67 years |
| David Hugh Wellens | Director | 4 Dec 1998 | 5 Oct 2001 | British | 83 years |
| David James Hadden | Secretary | 24 Nov 1995 | 2 Feb 1998 | British | - |
| Edward Christopher Robinson | Director | 31 Oct 1991 | 24 Nov 1995 | British | 90 years |
| Ian Mighell Monks | Director | 2 Aug 2014 | 2 Aug 2014 | British | 66 years |
| Iliya William Blazic | Director | 2 Aug 2014 | 2 Aug 2014 | Australian | 58 years |
| James David Stevenson | Secretary | 29 May 1998 | 18 Mar 1999 | British | - |
| John Southern | Director | 8 Apr 2005 | 7 Mar 2007 | British | 65 years |
| Katherine Jane Jones | Director | 23 Dec 2011 | 1 Mar 2013 | British | 63 years |
| Keith David Rennie Alexander | Director | 31 Oct 1991 | 24 Nov 1995 | British | 71 years |
| Keith David Rennie Alexander | Secretary | 31 Oct 1991 | 27 Oct 1994 | British | - |
| Malcolm Glen Mcallister | Director | 24 Nov 1995 | 8 Apr 2005 | British | 79 years |
| Michael Calvert | Director | 4 Dec 1998 | 30 Jun 2000 | British | 76 years |
| Michelle Mcnally | Director | 7 Mar 2007 | 2 Aug 2014 | British | 52 years |
| Michelle Mcnally | Director | 2 Aug 2014 | 19 Aug 2016 | British | 52 years |
| Peter John Pereira Gray | Director | 2 Aug 2014 | 2 Aug 2014 | British | 63 years |
| Robert Anthony Argyle | Director | 17 Aug 2015 | 28 Feb 2019 | British | 52 years |
| Shirley Elizabeth Johnson | Secretary | 27 Oct 1994 | 24 Nov 1995 | British | - |
| Simon Nicholas Jon Thackray | Secretary | 2 Feb 1998 | 29 May 1998 | British | - |