| Aidan Christopher Smith | Director | 28 Oct 1993 | 31 Mar 2008 | British | 67 years |
| Alan Romanis | Director | 23 Apr 1996 | 31 Jul 1997 | British | 87 years |
| Barbara Gibbes | Director | 16 Jan 2017 | 16 Aug 2019 | British | 51 years |
| Caroline Kirby | Director | 13 Aug 2010 | 17 Oct 2011 | British | 58 years |
| David Andrew Fischel | Director | 8 May 1992 | 26 Apr 2019 | British | 68 years |
| Donald Gordon | Director | 8 May 1992 | 28 Oct 1993 | South African | 96 years |
| Donald Gordon | Director | 28 Nov 1995 | 5 Oct 1999 | South African | 96 years |
| Edward Matthew Giles Roberts | Director | 13 Aug 2010 | 15 Apr 2020 | British | 63 years |
| Farrell Barry Sher | Director | 28 Nov 1995 | 26 Mar 2003 | British | 81 years |
| Gary Richard Hoskins | Director | 13 Aug 2010 | 3 Nov 2011 | British | 55 years |
| Gerard Patrick Adriaan Mccleester Conway | Director | 3 Nov 2011 | 17 Jul 2012 | British | 58 years |
| James Harry Sutcliffe | Director | 30 Jul 1999 | 8 Nov 1999 | British | 70 years |
| Jeremy Stephen Bottle | Director | 28 Oct 1993 | 28 Nov 1995 | British | 82 years |
| Jeremy Stephen Bottle | Secretary | 14 Sept 1992 | 7 Jan 2000 | British | - |
| Katharine Ann Bowyer | Director | 17 Sept 2014 | 30 Sept 2016 | British | 57 years |
| Katherine Anna Hutchinson | Secretary | 8 May 1992 | 14 Sept 1992 | British | - |
| Kay Elizabeth Chaldecott | Director | 13 Aug 2010 | 30 Sept 2011 | British | 64 years |
| Marc Theo Hommel | Director | 5 Oct 1999 | 11 Nov 1999 | British | 64 years |
| Mark Kildea | Director | 13 Aug 2010 | 17 Jun 2011 | British | 61 years |
| Martin David Ellis | Director | 3 Nov 2011 | 31 Dec 2015 | British | 62 years |
| Michael Rapp | Director | 8 May 1992 | 28 Oct 1993 | British | 91 years |
| Michael Rapp | Director | 28 Nov 1995 | 5 Oct 1999 | British | 91 years |
| Minakshi Kidia | Director | 16 Aug 2019 | 15 Apr 2020 | British | 48 years |
| Peter Weir | Director | 3 Nov 2011 | 17 Sept 2014 | British | 61 years |
| Phillip Sober | Director | 8 May 1992 | 28 Oct 1993 | British | 95 years |
| Phillip Sober | Director | 28 Nov 1995 | 5 Oct 1999 | British | 95 years |
| Robin Alexander Macdonald Baillie | Director | 8 May 1992 | 28 Oct 1993 | British | 93 years |
| Robin Alexander Macdonald Baillie | Director | 28 Nov 1995 | 5 Oct 1999 | British | 93 years |
| Roderick James Hugh Mcleod Corrie | Director | 5 Oct 1999 | 11 Nov 1999 | British | 64 years |
| Susan Folger | Director | 7 Apr 2008 | 13 Aug 2010 | British | 67 years |
| Susan Marsden | Secretary | 7 Feb 2000 | 31 Dec 2020 | British | - |
| Trevor Pereira | Director | 3 Nov 2011 | 31 Jan 2020 | British | 61 years |