| Charles Anson Grey Hatherell | Director | 20 Sept 1991 | 5 Sept 2000 | British | 83 years |
| Christopher James Odom | Director | 22 Oct 2007 | 1 Feb 2010 | British | 74 years |
| David Gary Silverman | Director | 10 Apr 2019 | 14 Apr 2022 | British | 56 years |
| Edward James Wingfield Lifford | Director | 1 Dec 2017 | 30 Sept 2021 | British | 76 years |
| Gareth Edmund Clutton | Director | 1 Oct 2008 | 14 Jul 2011 | British | 65 years |
| Hugh Richard Seaborn | Director | 5 Sept 2000 | 30 Sept 2008 | British | 63 years |
| Jennifer Anne Whybrow | Director | 10 Apr 2019 | 30 Sept 2021 | Australian,british | 50 years |
| John David Burns | Director | 1 Feb 2007 | 10 Apr 2019 | British | 81 years |
| John Michael Wythe | Director | 1 Jul 2015 | 1 Dec 2017 | British | 69 years |
| John Stratford Hugall | Director | 29 Nov 1994 | 5 Sept 2000 | British | 81 years |
| Malcolm Newman | Director | 14 Nov 2000 | 7 Nov 2002 | British | 84 years |
| Mark Peter Southern | Director | 22 Oct 2007 | 30 Sept 2021 | British | 66 years |
| Max Rayne | Director | 20 Sept 1991 | 14 Nov 2000 | British | 107 years |
| Michael Richard Goodliff | Director | 20 Sept 1991 | 29 Nov 1994 | British | 93 years |
| Michael Waldron | Secretary | 20 Sept 1991 | 13 Nov 2001 | British | - |
| Nicholas Gordon Ellis Driver | Director | 20 Sept 1991 | 11 Mar 2004 | British | 81 years |
| Nicholas Thomas Julian Groves | Director | 7 Nov 2002 | 14 Oct 2009 | British | 62 years |
| Oliver Barry Kemp Fenn-smith | Director | 22 May 2018 | 30 Sept 2021 | British | 60 years |
| Richard Neville Lay | Director | 9 Dec 1999 | 1 Jul 2015 | British | 87 years |
| Robert Anthony Rayne | Director | 11 Mar 2004 | 1 Feb 2007 | British | 76 years |
| Robert Antony Stuart Brock | Director | 20 Sept 1991 | 15 Oct 1993 | British | 97 years |
| Robert Antony Stuart Brock | Director | 20 Sept 1995 | 9 Dec 1999 | British | 97 years |
| Robert Fitzhardinge Jenner Spier | Director | 20 Sept 1991 | 31 Jul 1998 | British | 89 years |
| Simon Colin Mitchley | Secretary | 13 Nov 2001 | 1 Feb 2007 | British | - |
| Timothy James Kite | Secretary | 1 Feb 2007 | 2 Oct 2017 | British | - |
| Walter Millsom | Director | 20 Sept 1991 | 1 Feb 2007 | British | 99 years |
| William Hewitt Moore | Director | 29 Nov 2011 | 22 May 2018 | British | 67 years |