| Andrew Michael Smith | Director | 12 Apr 2006 | 30 Sept 2011 | British | 63 years |
| Barry Lax | Director | 4 Jun 1997 | 2 Aug 1999 | British | 71 years |
| Charles Bennett Brown | Director | 24 Feb 2000 | 26 May 2000 | British | 60 years |
| Clare Pickering | Director | 1 Mar 2018 | 30 Apr 2025 | British | 56 years |
| Daphne Margaret Murray | Secretary | 1 Apr 2004 | 30 Jun 2018 | British | - |
| David Stirland | Secretary | 28 Mar 1991 | 29 Mar 1999 | British | - |
| Emma Jayne Ashenden | Secretary | 25 Jan 2021 | 2 Feb 2023 | - | - |
| Frank James Standish | Director | 26 May 2000 | 1 Jul 2000 | British | 63 years |
| Frank James Standish | Secretary | 30 Apr 2000 | 1 Jul 2000 | British | - |
| Graham Howard Grant | Director | 31 Mar 1995 | 4 Jun 1997 | British | 92 years |
| Graham Reavley Bowman | Director | 1 Aug 1999 | 24 Feb 2000 | British | 82 years |
| Jason Alexander Smalley | Director | 30 Sept 2011 | 22 Oct 2016 | British | 57 years |
| Jeffrey Coleman | Director | 28 Mar 1991 | 31 Mar 1995 | British | 86 years |
| John Anthony Robinson | Director | 24 Feb 2000 | 1 Apr 2004 | British | 78 years |
| John Reginald Holmes | Director | 22 Jan 1997 | 31 Jan 1999 | British | 73 years |
| Larry Jose Zea Betancourt | Director | 16 Mar 2015 | 1 Oct 2019 | Venezuelan | 65 years |
| Malcolm Stuart Parker | Secretary | 29 Mar 1999 | 2 Aug 1999 | British | - |
| Matthew Edward Currer Topham | Director | 1 Aug 1999 | 24 Feb 2000 | British | 67 years |
| Melvin Graham Copper | Director | 31 Jan 1999 | 30 Apr 1999 | British | 74 years |
| Michael David Hampson | Director | 24 Feb 2000 | 1 Jul 2000 | British | 68 years |
| Michael Leslie Collins | Director | 1 Jul 2000 | 16 Mar 2015 | British | 70 years |
| Michael Leslie Collins | Secretary | 1 Jul 2000 | 1 Apr 2004 | British | - |
| Peter Henry Gillard | Director | 12 Jun 2007 | 22 May 2009 | British | 74 years |
| Peter John Carr | Director | 28 Mar 1991 | 31 Dec 1995 | British | 85 years |
| Philip Bernard Griffin Smith | Secretary | 2 Aug 1999 | 30 Apr 2000 | British | - |
| Rebecca Juliet Wright | Secretary | 30 Jun 2018 | 25 Jan 2021 | - | - |
| Richard Martin Fawcett | Director | 31 Mar 1995 | 22 Jan 1997 | British | 81 years |
| Robert Jones | Director | 28 Mar 1991 | 31 Mar 1995 | British | 94 years |
| Stephen Bottle | Director | 1 Jul 2000 | 12 Apr 2006 | British | 69 years |
| Stephen Taylor | Director | 31 Jan 1999 | 2 Aug 1999 | British | 73 years |