| Alan Henry Haywood | Director | 1 Nov 2014 | 1 Jan 2017 | British | 60 years |
| Andrea Margaret Thomas | Secretary | 1 Sept 1997 | 1 May 2003 | Other | - |
| Brian Gilvary | Director | 1 Jan 2012 | 8 Jul 2019 | British | 64 years |
| Brian Peevor | Secretary | 1 Apr 1994 | 31 Aug 1997 | British | - |
| Byron Elmer Grote | Director | 1 Oct 2001 | 1 Jan 2012 | British And Us Citiz | 78 years |
| Catherine Ann Mccann | Director | 1 Feb 2022 | 1 Jun 2023 | British | 60 years |
| Christopher Kuangcheng Gerald Eng | Secretary | 23 Mar 2009 | 30 Jun 2010 | - | - |
| Christopher Shaw Gibson Smith | Director | 1 Sept 1997 | 1 Oct 2001 | British | 81 years |
| David Christopher Allen | Director | 14 Jul 2004 | 31 Mar 2008 | British | 72 years |
| David James Bucknall | Director | 1 Jan 2012 | 1 Nov 2014 | British | 58 years |
| David James Bucknall | Director | 8 Jul 2019 | 20 Feb 2021 | British | 58 years |
| Debasish Satya Sanyal | Director | 9 Jun 2011 | 1 Jan 2012 | British | 61 years |
| Douglas Patrick Chapman | Director | 5 Oct 1992 | 31 Mar 1994 | British | 76 years |
| Francis William Michael Starkie | Director | 1 Apr 1994 | 30 Dec 1996 | British | 77 years |
| Jayne Angela Hodgson | Director | 20 Feb 2021 | 29 Aug 2025 | British | 57 years |
| John Gordon Sinclair Buchanan | Director | 31 Dec 1996 | 21 Nov 2002 | British | 83 years |
| Julian John Watts | Director | 21 Dec 1994 | 30 Dec 1996 | New Zealand | 87 years |
| Julian John Watts | Secretary | 25 Dec 1991 | 31 Mar 1994 | New Zealand | - |
| Karl Russell Seal | Director | 31 Dec 1996 | 31 Aug 1997 | British | 84 years |
| Katherine Anne Thomson | Director | 1 Jan 2017 | 1 Feb 2022 | British | 58 years |
| Kathryn Mary Berry | Director | 1 Jun 2023 | 26 Aug 2025 | British | 59 years |
| Rebecca Jayne Weedon | Secretary | 1 May 2003 | 1 Oct 2003 | British | - |
| Rebecca Jayne Wright | Secretary | 1 Aug 2004 | 30 Jun 2010 | Other | - |
| Richard Charles Grayson | Director | 5 Oct 1992 | 21 Dec 1994 | British | 85 years |
| Richard John Evans | Director | 25 Dec 1991 | 5 Oct 1992 | British | 85 years |
| Richard Lake Olver | Director | 21 Nov 2002 | 14 Jul 2004 | British | 79 years |
| Richard Sidney Ely | Director | 25 Dec 1991 | 5 Oct 1992 | British | 81 years |
| Robert Warren Dudley | Director | 6 Apr 2009 | 9 Jun 2011 | American | 71 years |
| Stuart Antony Daniels | Secretary | 1 Oct 2003 | 1 Aug 2004 | British | - |
| Yasin Stanley Ali | Secretary | 19 Feb 2001 | 30 Jun 2010 | - | - |
