| Alan James Oddie | Director | 21 Jun 1993 | 1 Apr 1996 | British | 76 years |
| Anthony John Ashplant | Director | 17 Nov 1998 | 13 Aug 2001 | British | 72 years |
| Anthony Presley Shearer | Director | 30 Sept 1992 | 15 Jan 1996 | British | 78 years |
| Benjamin Bernard Woulfe Goodden | Director | 30 Sept 1992 | 1 Oct 1994 | British | 101 years |
| Brett Stuart Powell Williams | Director | 15 Jan 1996 | 2 Feb 1998 | British | 67 years |
| Carolan Dobson | Director | 12 Oct 2018 | 1 Oct 2025 | British | 72 years |
| Charles Michael Obrien | Director | 21 Jun 1993 | 31 Dec 1994 | British | 107 years |
| Christopher Ian Jackson | Director | 16 May 2005 | 30 Apr 2013 | British | 60 years |
| Christopher Owen Eve | Director | 30 Sept 1992 | 1 Oct 1994 | British | 75 years |
| David Jeremy Michael Burchill | Director | 21 Jul 1997 | 3 Sept 1999 | British | 75 years |
| David Jeremy Michael Burchill | Secretary | 30 Sept 1992 | 3 Sept 1999 | British | - |
| David Kenneth Watson | Director | 26 Oct 1994 | 28 Aug 2001 | British | 67 years |
| David Leslie Morgan | Director | 18 Jul 1994 | 20 Jan 1997 | British | 93 years |
| David William Dibben | Director | 15 Nov 2001 | 31 Oct 2004 | British | 66 years |
| Deborah Jacqueline Carter | Director | 24 Feb 2005 | 31 Oct 2008 | British | 62 years |
| Desmond John Le Grys | Director | 17 Nov 1998 | 5 Jul 2000 | British | 90 years |
| Edward Louis Rosengarten | Director | 19 Apr 2006 | 28 Oct 2010 | British | 58 years |
| Gary Nicholas Cotton | Director | 17 May 2011 | 30 Sept 2019 | British | 57 years |
| Gary Paul John Shaughnessy | Director | 31 Jul 2001 | 12 Jun 2008 | British | 60 years |
| Gillian Clark | Director | 30 Sept 1992 | 8 Jul 1994 | British | 67 years |
| Graham Williamson Macdowall | Director | 19 Jun 2001 | 4 Jan 2019 | British | 63 years |
| Harold John Haden | Director | 15 Jan 1996 | 17 Mar 1997 | British | 85 years |
| Jeffrey Stephen Peter Mushens | Director | 30 Sept 1992 | 1 Oct 1994 | British | 72 years |
| Jeffrey Stephen Peter Mushens | Director | 12 Jul 1996 | 5 Mar 1998 | British | 72 years |
| John Hamilton Goddard | Director | 13 Sept 2004 | 8 Jul 2005 | United States Citizen | 55 years |
| John Richard Talbot | Director | 21 Jun 1993 | 30 Jun 2013 | British | 75 years |
| John Richard Talbot | Secretary | 3 Sept 1999 | 30 Jun 2013 | British | - |
| Jonathan Peter Mcclelland | Secretary | 1 Jul 2013 | 27 Jan 2017 | - | - |
| Laurence Edward Linaker | Director | 30 Sept 1992 | 29 Jul 1994 | British | 92 years |
| Lavinia Ulrike Darby | Director | 24 Sept 2008 | 23 Dec 2011 | British | 57 years |
| Leslie John Scrine | Director | 18 Apr 1994 | 27 Feb 2001 | British | 68 years |
| Leslie John Scrine | Director | 8 Apr 2005 | 30 Apr 2012 | British | 68 years |
| Lyndon Terence Turner | Director | 30 Sept 1992 | 21 Jun 1993 | British | 73 years |
| Margaret Mary Ammon | Director | 26 Jul 2018 | 17 Oct 2019 | British | 59 years |
| Martin Lewis | Director | 20 Oct 1997 | 13 Jun 2016 | British | 70 years |
| Michael George Alexander Mclintock | Director | 12 Jul 1996 | 13 Aug 2001 | British | 65 years |
| Michael Gordon Abbott | Director | 21 Jun 1993 | 31 Mar 1994 | British | 72 years |
| Michael John Friend | Director | 30 Sept 1992 | 4 Aug 1993 | British | 79 years |
| Neal John Brooks | Director | 19 May 2021 | 30 Jun 2025 | British | 56 years |
| Neil Michael Donnelly | Director | 9 Jun 2017 | 30 Jun 2020 | Irish | 54 years |
| Norman King | Director | 21 Jun 1993 | 1 Oct 1994 | British | 80 years |
| Norman King | Director | 15 Jan 1996 | 6 Jun 1997 | British | 80 years |
| Peter Anthony Emms | Director | 16 Nov 1992 | 9 Oct 1998 | British | 77 years |
| Philip Charles Wagstaff | Director | 23 Jul 2001 | 30 Jun 2004 | British | 63 years |
| Rachel Mary Medill | Director | 20 Oct 1997 | 10 Mar 1998 | British | 63 years |
| Robert Arthur Mccrindle | Director | 21 Jun 1993 | 8 Jan 1998 | British | 97 years |
| Roger Andrew Jennings | Director | 30 Sept 1992 | 1 Oct 1994 | British | 85 years |
| Sally Jane Baldon | Secretary | 27 Jan 2017 | 2 Jul 2018 | - | - |
| Sean Andrew Fitzgerald | Director | 16 Mar 2020 | 13 Jan 2025 | British | 61 years |
| Stuart Campbell James | Director | 22 Dec 1995 | 5 Jul 2000 | British | 82 years |
| Tara Christina Nelson | Secretary | 2 Jul 2018 | 8 Jul 2021 | - | - |
| Timothy Peter Francis Miller | Director | 30 Sept 1992 | 12 Oct 1992 | British | 86 years |
| William George Vasilieff | Director | 15 Jan 1996 | 17 Mar 1998 | British | 71 years |
| William John Nott | Director | 1 Dec 2001 | 31 Dec 2017 | British | 64 years |