| Bruce Mayo | Director | 16 Apr 1992 | 1 Oct 1997 | British | 84 years |
| Clifford Andrew Clingan | Director | 1 Jun 1992 | 1 Oct 1997 | British | 86 years |
| David Ernest Palmer | Director | 1 Dec 1994 | 20 Aug 1995 | British | 91 years |
| George Edward Cummings | Director | 16 Apr 1992 | 30 Jun 1994 | British | 91 years |
| Hamish Bruce Nichol | Director | 16 Apr 1992 | 30 Jun 1994 | British | 81 years |
| Henry Steven Willox | Secretary | 30 Jun 1994 | 1 Dec 1994 | British | - |
| Joanna Maria Field | Secretary | 27 Jan 2015 | 31 Mar 2017 | - | - |
| John Stanley Marlor | Director | 16 Apr 1992 | 30 Jun 1994 | British | 77 years |
| John Stanley Marlor | Secretary | 16 Apr 1992 | 30 Jun 1994 | British | - |
| Keith John Howells | Director | 29 Jul 2005 | 27 Nov 2015 | British | 73 years |
| Keith John Howells | Director | 27 Nov 2015 | 30 Jun 2019 | British | 73 years |
| Kevin John Stovell | Director | 16 Apr 1992 | 27 Nov 2015 | British | 74 years |
| Marjorie Eva Lynn | Secretary | 1 Oct 1997 | 27 Jan 2015 | British | - |
| Martin Stevenson Crosbie Frame | Director | 14 May 2002 | 29 Apr 2005 | British | 81 years |
| Michael David Haigh | Director | 27 Nov 2015 | 31 Jul 2022 | British | 66 years |
| Michael John Viney | Director | 3 Sept 1992 | 25 Jul 2003 | British | 83 years |
| Michael Orlando Blackburn | Director | 1 Oct 1997 | 18 Oct 2007 | British | 81 years |
| Michael Victor Hugh Durham | Director | 16 Apr 1992 | 31 Jul 1995 | British | 85 years |
| Norman Brett Jobson | Director | 16 Apr 1992 | 2 Jun 1994 | Australian | 78 years |
| Peter John Wickens | Director | 29 Jul 2005 | 31 Dec 2010 | British | 76 years |
| Peter Leonard Conway | Director | 16 Apr 1992 | 11 Nov 1992 | British | 94 years |
| Peter Michael Chesworth | Director | 29 Mar 1999 | 5 Aug 2005 | British | 81 years |
| Peter Wyatt Fielder | Director | 16 Apr 1992 | 30 Jun 1992 | British | 94 years |
| Philip Charles Gregory | Secretary | 15 Mar 1996 | 1 Oct 1997 | British | - |
| Robin Bretten Fox | Director | 1 Dec 1994 | 10 May 2002 | British | 83 years |
| Roger William Hampson Reed | Director | 1 Jun 1992 | 10 Sept 1993 | British | 88 years |
| Timothy John Thirlwall | Director | 1 Dec 1994 | 29 Mar 1999 | British | 83 years |
| Trevor John Wiltshire | Director | 1 Jun 1992 | 31 Dec 1994 | British | 91 years |
| William Gregor Desson | Secretary | 1 Dec 1994 | 15 Mar 1996 | British | - |