| Alan Tapnack | Director | 27 Sept 1999 | 22 Aug 2016 | British | 78 years |
| Alexander Michael Sorkin | Director | 15 Nov 1995 | 14 Jan 1998 | British | 82 years |
| Alexander Robert Hambro | Director | 18 May 1995 | 10 Jan 2000 | British | 63 years |
| Andrew James Barnes | Director | 31 Jan 2006 | 19 Feb 2023 | British | 61 years |
| Bernard Kantor | Director | 1 Sept 1998 | 8 Aug 2019 | Irish | 76 years |
| Brian Mark Johnson | Director | 8 Dec 2014 | 21 Aug 2023 | British | 51 years |
| Catherine Elizabeth Dyson | Director | 30 May 2018 | 3 Apr 2024 | British | 49 years |
| Charles Basil Tilley | Director | N/A | 31 Dec 1996 | British | 75 years |
| Charles Eric Alexander Hambro | Director | 15 Sept 1991 | 26 Aug 1998 | British | 95 years |
| Christopher Henry Sporborg | Director | 15 Sept 1991 | 14 Nov 1995 | British | 86 years |
| Christopher Stephen Heyworth | Director | 8 Dec 2014 | 30 May 2018 | British | 43 years |
| David Dale Bailey | Director | 15 Sept 1991 | 26 Aug 1998 | British | 82 years |
| David Gwynder Lewis | Director | 31 Oct 1991 | 21 Mar 1996 | British | 83 years |
| David Michael Van Der Walt | Director | 31 Jan 2011 | 31 May 2021 | British | 61 years |
| David Miller | Secretary | 8 Jun 2005 | 9 May 2007 | British | - |
| David Phillip Gibbs | Director | 15 Sept 1991 | 21 Mar 1996 | British | 84 years |
| Geoffrey William David Goodhind | Director | 15 Sept 1991 | 27 Mar 1997 | British | 89 years |
| Geoffrey William David Goodhind | Secretary | 15 Sept 1991 | 27 Mar 1997 | British | - |
| Gilbert John Chalk | Director | 15 Sept 1991 | 31 Mar 1994 | British | 78 years |
| Grant Ashley Davies-ratcliff | Secretary | 14 Nov 2002 | 8 Jun 2005 | British | - |
| John Chippendale Lindley Keswick | Director | 21 Mar 1996 | 26 Aug 1998 | British | 85 years |
| John Martin Clay | Director | 15 Sept 1991 | 22 Jul 1997 | British | 98 years |
| John Michael May | Director | 15 Sept 1991 | 28 Feb 1999 | British | 70 years |
| Kathy Cong | Secretary | 9 May 2007 | 27 Apr 2009 | British | - |
| Kerry Anne Abigail Thomas | Secretary | 13 Nov 1998 | 14 Nov 2002 | British | - |
| Kevin Bruce Christie | Director | 1 Sept 1998 | 10 Mar 2000 | British | 67 years |
| Nicholas Hurst Page | Director | 31 Oct 1991 | 19 Aug 1998 | British | 73 years |
| Peter Denis Hill-wood | Director | 15 Sept 1991 | 10 Mar 1994 | British | 89 years |
| Robert Victor Cohen | Director | 27 Sept 1999 | 31 Jan 2006 | British | 70 years |
| Seville Leonard Chonin | Director | 2 Mar 2006 | 3 Mar 2010 | British | 73 years |
| Shilla Pindoria | Secretary | 27 Apr 2009 | 30 Nov 2009 | Other | - |
| Simon William De Mussenden Leathes | Director | 23 Jan 1997 | 13 Aug 1998 | British | 77 years |
| Stephen Arthur Cohen | Director | 19 Mar 1997 | 1 Dec 2000 | British | 72 years |
| Steven John Heilbron | Director | 31 Jan 2011 | 8 Dec 2011 | South African | 60 years |
| Steven Mark Burgess | Director | 1 Dec 2000 | 28 Nov 2014 | British | 69 years |
| Susan Kathleen Kelly | Secretary | 27 Mar 1997 | 13 Nov 1998 | British | - |