| Alistair Michael Stokes | Director | 9 Dec 1999 | 31 Dec 2000 | British | 77 years |
| Andrew Dickinson | Secretary | 12 Oct 2007 | 13 Jul 2010 | British | - |
| Andrew John Oakley | Director | 1 Jan 2015 | 10 Jun 2016 | Australian | 63 years |
| Anne Philomena Hyland | Director | 11 Nov 2010 | 1 Jul 2013 | Irish | 65 years |
| Christopher Paul Blackwell | Director | 11 Nov 2010 | 1 Jul 2015 | British | 64 years |
| Colin Clive Dalton | Director | 14 Jul 2005 | 5 Jul 2011 | British | 75 years |
| David Heath | Director | 18 Dec 1997 | 11 Nov 1998 | British | 89 years |
| David Winston Lewis | Secretary | 19 Dec 2000 | 14 Jul 2005 | British | - |
| Gordon James Hall | Director | 16 Jun 1998 | 11 Nov 1998 | British | 83 years |
| Iain Gladstone Ross | Director | 11 Nov 1998 | 15 Dec 2000 | British | 71 years |
| Jan Willem Rinus Den Toom | Director | 18 Dec 1997 | 4 Jun 1998 | Dutch | 76 years |
| Keith Edward Lewington | Nominee Director | 10 Jul 1997 | 18 Dec 1997 | British | 74 years |
| Kieran Pius Murphy | Director | 14 Jul 2005 | 17 Jan 2007 | Irish | 62 years |
| Lee Fraser Coleman | Secretary | 17 Jan 2007 | 12 Oct 2007 | British | - |
| Paul Stephen Oliver | Director | 1 Jul 2013 | 1 Jan 2015 | British | 47 years |
| Peter Frederick Burrell | Secretary | 13 Jul 2010 | 1 Jan 2015 | - | - |
| Peter John Shennan | Director | 14 Jul 2005 | 17 Jan 2007 | British | 75 years |
| Peter John Shennan | Secretary | 14 Jul 2005 | 17 Jan 2007 | British | - |
| Rajan Uppal | Director | 11 Nov 1998 | 14 Jul 2005 | British | 63 years |
| Rajan Uppal | Secretary | 11 Nov 1998 | 30 Jul 1999 | British | - |
| Richard P Lyman | Director | 11 Nov 1998 | 9 Dec 1999 | American | 81 years |
| Robert Cooper | Director | 6 Oct 1998 | 11 Nov 1998 | British | 89 years |
| Robert Jean Doekes | Director | 18 Dec 1997 | 11 Nov 1998 | Dutch | 61 years |
| Sandra Wood | Secretary | 18 Dec 1997 | 11 Nov 1998 | British | - |
| Simon Quist | Director | 4 Jun 1998 | 11 Nov 1998 | Dutch | 79 years |
| Stuart John Myles Collinson | Director | 10 Jun 1998 | 11 Nov 1998 | British | 65 years |
| Susan Elizabeth Stoneman | Nominee Secretary | 10 Jul 1997 | 18 Dec 1997 | British | - |
| Terence Stanley Chadwick | Director | 19 Dec 2000 | 17 Jan 2007 | British | 75 years |
| Trevor Michael Phillips | Director | 1 Jul 2015 | 31 May 2017 | British | 64 years |
| Zoe Margaret Laura Codd | Secretary | 30 Jul 1999 | 19 Dec 2000 | British | - |