| Alan James Belfield | Director | 25 May 2017 | 31 Mar 2019 | British | 70 years |
| Anthony Frederick Lovell | Director | 18 Mar 2020 | 31 Mar 2022 | British | 58 years |
| Anthony James Fitzpatrick | Director | 1 Apr 1994 | 26 Jul 2003 | British | 75 years |
| Anthony John Marriott | Director | 27 Nov 1991 | 31 Mar 1996 | British | 88 years |
| Charles Thomas Barker | Director | 27 Nov 1991 | 31 Mar 1998 | British | 90 years |
| David Arthur Whittleton | Director | 1 Apr 2004 | 23 May 2017 | British | 75 years |
| Donald Mackay Ferguson | Director | 27 Nov 1991 | 31 Oct 1994 | British | 86 years |
| Duncan Michael | Director | 27 Nov 1991 | 25 May 2002 | British | 89 years |
| Frederick George Ernest Irwin | Director | 27 Nov 1991 | 31 Mar 1996 | British | 93 years |
| Jennifer Baster | Director | 2 Feb 2012 | 31 Mar 2013 | British | 77 years |
| John Charles Miles | Director | 1 Apr 1994 | 1 Jan 2012 | British | 75 years |
| John Neville Martin | Director | 27 Nov 1991 | 31 Mar 1995 | British | 94 years |
| Jorgen Nissen | Director | 27 Nov 1991 | 31 Mar 1998 | Danish | 91 years |
| Martyn Arthur Stroud | Director | 1 Apr 1994 | 23 Sept 2002 | British | 83 years |
| Matthew Stuart Tweedie | Director | 1 May 2009 | 30 Aug 2019 | British | 55 years |
| Matthew Stuart Tweedie | Secretary | 1 Apr 2007 | 1 Nov 2015 | British | - |
| Michael David Peter Sargent | Director | 27 Nov 1991 | 31 Mar 2002 | British | 87 years |
| Michael John Somers | Secretary | 1 Apr 2001 | 31 Mar 2007 | British | - |
| Michael Robin Lewis | Director | 27 Nov 1991 | 31 Mar 1992 | Australian | 99 years |
| Michael Shears | Director | 27 Nov 1991 | 31 Mar 2004 | British | 86 years |
| Nigel Cooper Thompson | Director | 27 Nov 1991 | 31 Mar 1996 | British | 87 years |
| Peter Ronan Rice | Director | 27 Nov 1991 | 25 Oct 1992 | Irish | 91 years |
| Povl Borge Ahm | Director | 27 Nov 1991 | 31 Mar 1992 | Danish | 100 years |
| Richard Abigail | Director | 6 Aug 2019 | 31 Mar 2020 | British | 51 years |
| Richard Baskcomb Haryott | Director | 27 Nov 1991 | 31 Mar 2003 | British | 85 years |
| Robert Frank Emmerson | Director | 27 Nov 1991 | 31 Mar 2004 | British | 88 years |
| Stuart Leonard Irons | Secretary | 27 Nov 1991 | 31 Mar 2001 | British | - |
| Terence Malcolm Hill | Director | 1 Apr 2004 | 31 Mar 2009 | British | 78 years |
| Turlogh Patrick O'brien | Director | 27 Nov 1991 | 31 Mar 2004 | British | 84 years |
| Vanessa Jane Shakespeare | Secretary | 2 Nov 2015 | 1 Jul 2022 | - | - |