| Alistair Robert Morris | Director | 28 Apr 2014 | 15 Jan 2018 | British | 57 years |
| Bill Orr | Director | 27 Sept 2011 | 31 Dec 2016 | British | 63 years |
| Catherine Mary Mcdowell | Director | 14 Dec 1993 | 24 May 1996 | British | 68 years |
| Charlie Kim Hwa Lim | Director | 15 Jun 2016 | 9 Feb 2018 | Malaysian | 52 years |
| Christopher Stuart Duncan | Director | 7 Dec 2000 | 31 May 2002 | British | 77 years |
| Daniel Francis Coman | Director | 2 Oct 2006 | 19 Mar 2010 | Other | 62 years |
| Evan James Williams | Director | 8 Feb 2018 | 7 Sept 2018 | British | 42 years |
| Garry John Welsh | Director | 12 Feb 2003 | 11 Mar 2005 | British | 62 years |
| Graeme Percival Hansen | Director | 16 Oct 1997 | 3 Feb 2000 | New Zealand | 79 years |
| Hannah Clare Wood | Director | 8 Mar 2017 | 3 Mar 2025 | British | 51 years |
| Harvinder Singh Baidwan | Director | 8 Jul 2022 | 29 Apr 2024 | British | 36 years |
| Heather Jill Maizels | Director | 7 Feb 2002 | 6 Mar 2008 | British | 71 years |
| Huw Llewelyn Morgan | Director | 14 Dec 1993 | 24 May 1996 | British | 79 years |
| James Henry Chibbett | Director | 17 Dec 1992 | 30 Jun 1998 | British | 72 years |
| John Edwin Church | Director | 17 Dec 1992 | 12 Oct 1995 | British | 72 years |
| John Michael David Atterbury | Secretary | 17 Dec 1992 | 7 Mar 1995 | British | - |
| John Michael Mills | Secretary | 31 Dec 1996 | 6 Oct 1998 | British | - |
| Lawrence Charles Dickinson | Director | 7 Feb 2002 | 12 Feb 2003 | British | 68 years |
| Melanie Candice Campbell | Director | 19 Mar 2010 | 27 Sept 2011 | British | 51 years |
| Michael Bo Pedersen | Director | 12 Feb 2003 | 31 Jan 2006 | Canadian | 65 years |
| Michael Hardwick Tomalin | Director | 17 Dec 1992 | 5 Jan 1999 | British | 78 years |
| Nicholas Saul Arnold | Director | 3 Dec 2013 | 4 May 2016 | British | 48 years |
| Rebecca Louise Jones | Director | 8 Feb 2018 | 20 Jul 2021 | British | 41 years |
| Richard James Amos | Director | 12 Oct 1995 | 6 May 2000 | British | 71 years |
| Rishi Shah | Director | 19 Jul 2021 | 22 Nov 2022 | British | 43 years |
| Robert Fellowes | Director | 7 Feb 2002 | 12 Feb 2008 | British | 84 years |
| Ronald David Henry Ainsworth | Secretary | 7 Mar 1995 | 17 Dec 1995 | British | - |
| Ronald David Henry Ainsworth | Secretary | 17 Dec 1995 | 31 Dec 1996 | British | - |
| Simon John Weld | Director | 12 Feb 2008 | 1 Sept 2010 | British | 61 years |
| Simon Walter Julian Wathen | Director | 26 Jun 2003 | 31 Dec 2004 | British | 75 years |
| William Louis Charles Oullin | Director | 1 Feb 2000 | 5 Dec 2002 | French | 79 years |