| Andrew Elliott Macfarlane | Director | 1 Oct 2001 | 5 Aug 2005 | British | 69 years |
| Aubrey Mark Collins | Director | 20 Nov 2002 | 19 Oct 2006 | British | 69 years |
| David John Heaford | Director | 30 Jul 2018 | 15 Jul 2019 | British | 47 years |
| David Leslie Frank Holt | Director | 1 Sept 2004 | 30 Sept 2012 | United Kingdom | 67 years |
| David Rough | Director | 2 Apr 2002 | 1 Oct 2002 | British | 74 years |
| Despina Don-wauchope | Director | 30 Sept 2012 | 6 Dec 2013 | British | 56 years |
| Despina Don-wauchope | Director | 30 Jul 2018 | 25 Jan 2019 | British | 56 years |
| Don Eric Stanley | Director | 5 Aug 2022 | 13 Dec 2022 | British | 53 years |
| Francis William Salway | Director | 2 Apr 2001 | 31 Mar 2012 | British | 68 years |
| Giles Ian Henderson | Director | 2 Oct 2000 | 1 Oct 2002 | British | 83 years |
| Harold Ivor Connick | Director | 12 Jul 1992 | 1 Jul 1998 | British | 98 years |
| Ian David Ellis | Director | 20 Nov 2002 | 12 Jan 2009 | British | 70 years |
| Ian James Henderson | Director | 12 Jul 1992 | 14 Jul 2004 | United Kingdom | 82 years |
| James Ian Keith Murray | Director | 12 Jul 1992 | 28 Jun 2001 | British | 79 years |
| James Stephen Gillard | Director | 30 Jun 2021 | 15 Jun 2022 | British | 48 years |
| John Folliot Charles Hull | Director | 12 Jul 1992 | 14 Jul 1999 | British | 100 years |
| Keith Redshaw | Director | 12 Jul 1992 | 20 Mar 2001 | British | 79 years |
| Laurance Aubrey Jones | Secretary | 12 Jul 1992 | 6 Apr 1998 | British | - |
| Leigh-anne Louise Sellars | Director | 10 Feb 2022 | 31 Mar 2025 | British | 44 years |
| Manish Jayantilal Chande | Director | 29 Nov 2000 | 28 Feb 2002 | British | 69 years |
| Marc Peter Cadwaladr | Director | 6 Dec 2013 | 28 Jun 2021 | British | 53 years |
| Martin Frederick Greenslade | Director | 6 Sept 2005 | 31 May 2021 | British | 60 years |
| Martin Reay Wood | Director | 1 Sept 2004 | 30 Jun 2021 | British | 65 years |
| Matthew Alistair Grant | Director | 19 Aug 1996 | 22 Jan 2001 | British | 88 years |
| Michael Richard Hussey | Director | 3 Apr 2006 | 30 Jun 2009 | British | 60 years |
| Michael Robert Griffiths | Director | 12 Jul 1992 | 8 Jul 2002 | British | 80 years |
| Peter Bernard Hardy | Director | 12 Jul 1992 | 9 Jul 2002 | British | 87 years |
| Peter Geoffrey Freeman | Director | 1 Jan 2002 | 1 Oct 2002 | British | 70 years |
| Peter Gibbs Birch | Director | 7 Apr 1997 | 1 Oct 2002 | British | 88 years |
| Peter John Hunt | Director | 12 Jul 1992 | 8 Dec 1997 | British | 92 years |
| Peter Maxwell Dudgeon | Secretary | 7 Apr 1998 | 30 Apr 2011 | British | - |
| Peter Walichnowski | Director | 1 Sept 2000 | 19 Dec 2001 | Australian | 70 years |
| Richard Allen William Caine | Director | 12 Jul 1992 | 1 Jul 1993 | British | 111 years |
| Richard John Akers | Director | 3 Apr 2006 | 31 Mar 2014 | English | 64 years |
| Robert Montague Noel | Director | 26 Jan 2010 | 31 Mar 2020 | British | 61 years |
| Rosalind Charlotte Futter | Director | 25 Jan 2019 | 5 Aug 2022 | British | 47 years |
| Ruth Shearer | Director | 15 Jul 2019 | 10 Feb 2022 | Irish | 40 years |
| William Mathieson | Director | 12 Jul 1992 | 1 Jul 1993 | British | 95 years |
| Winfried Franz Wilhelm Bischoff | Director | 1 Nov 1999 | 1 Oct 2002 | German/british | 84 years |