| Alwyn Bowman Powell | Director | 24 May 1991 | 31 May 1993 | British | 78 years |
| Angus Howard Fletcher | Director | 15 Apr 1997 | 28 Feb 2011 | British | 76 years |
| Anthony Alexander Preiskel | Director | 24 May 1991 | 3 Apr 2009 | British | 79 years |
| Anthony Arthur Chambers | Director | 24 May 1991 | 31 Jul 2000 | British | 80 years |
| Bernadette Allinson | Secretary | 29 Sept 2006 | 22 Mar 2008 | Other | - |
| Bruce Dugald Macphail | Director | 30 Aug 2001 | 12 Dec 2005 | British | 87 years |
| Christopher Frank Sadler | Director | 31 Jul 1987 | 6 Aug 2005 | British | 80 years |
| Christopher Frank Sadler | Secretary | 31 Jul 1993 | 6 Aug 2005 | British | - |
| Cynthia Mary Coombe | Secretary | 20 Oct 2010 | 28 Jul 2014 | - | - |
| David John Nicholson | Secretary | 22 Mar 2008 | 20 Oct 2010 | Other | - |
| Donald Alan Smith | Director | 24 May 1991 | 9 Dec 2002 | British | 84 years |
| Donald Edgar Brent | Director | 24 May 1991 | 22 Jul 1991 | British | 96 years |
| Edmund Kenneth Wyatt | Secretary | 24 May 1991 | 31 Jul 1993 | British | - |
| Edward Elliot Wilson | Director | 1 Oct 2003 | 12 Dec 2005 | British | 76 years |
| Guat Hoon (known As Christina) Ong | Director | 30 Apr 2015 | 10 Oct 2016 | Singaporean | 59 years |
| Ian Gregory Howie Barnett | Director | 24 May 1991 | 12 Dec 2005 | British | 76 years |
| Ian Gregory Howie Barnett | Director | 8 Apr 2010 | 31 Dec 2014 | British | 76 years |
| Ian Jillott | Director | 24 May 1991 | 31 Jul 2000 | British | 72 years |
| Peter Francis Thomas Bromwich | Director | 24 May 1991 | 7 May 1996 | British | 92 years |
| Peter Sidney Seward | Director | 24 May 1991 | 5 Aug 2005 | British | 76 years |
| Philip Alexander Cox | Director | 24 May 1991 | 31 Jul 2000 | British | 77 years |
| Philip Alwyn Bignell | Director | 24 May 1991 | 29 Sept 2006 | British | 73 years |
| Philip Alwyn Bignell | Secretary | 8 Aug 2005 | 29 Sept 2006 | British | - |
| Rashidi Olugbenga Keshiro | Director | 3 Apr 2009 | 9 Apr 2018 | British | 60 years |
| Raymond Antony Knight | Director | 24 May 1991 | 16 Dec 2003 | British | 83 years |
| Robert George Ferguson | Director | 24 May 1991 | 31 Jul 1999 | British | 87 years |
| Simon Roger Greenwood | Director | 24 May 1991 | 31 Jul 2001 | British | 71 years |
| Stanley Monger-godfrey | Director | 24 May 1991 | 31 Mar 2003 | British | 79 years |
| Timothy John Randolph Harding | Director | 24 May 1991 | 31 Jul 2001 | British | 86 years |
| William Thomas Edgerley | Director | 7 Nov 2006 | 15 Jul 2009 | British | 70 years |