| Alan Philip Scott | Director | 21 Dec 2010 | 10 Dec 2012 | British | 60 years |
| Alexander Graham Currie | Director | 1 Jan 1998 | 3 Sept 2012 | British | 65 years |
| Andrew Robert Astin | Director | 1 Oct 2015 | 28 Mar 2017 | British | 70 years |
| Anthony Graham Kyle Trinick | Director | 14 Oct 1992 | 30 Jun 1995 | British | 83 years |
| Barry Keith Hyam | Director | 1 Jan 2006 | 7 Aug 2009 | British | 73 years |
| Carl Anthony Wheldrake | Director | 11 Oct 1992 | 31 Mar 1995 | British | 88 years |
| Christopher Findlay Morgan | Director | 27 Aug 2010 | 30 Mar 2012 | British | 55 years |
| Colin Kenneth Dawe | Director | 3 Apr 1995 | 30 Jun 1997 | British | 79 years |
| David Goldie Beck | Director | 11 Oct 1992 | 20 Mar 2008 | British | 76 years |
| David Norman Mayer | Director | 11 Oct 1992 | 15 Sept 1998 | British | 77 years |
| Eric William Greenhalgh | Director | 9 Apr 1999 | 30 Jul 2007 | British | 80 years |
| Ewan Thomas Anderson | Director | 31 Jan 2012 | 10 Jan 2014 | British | 60 years |
| Geoffrey John Bryce | Director | 1 Sept 2002 | 10 Dec 2008 | British | 58 years |
| Gillian Scott Murray Mcniven | Director | 10 Jan 2014 | 14 May 2014 | British | 61 years |
| Gregory William Mutch | Director | 12 Sept 2014 | 30 Sept 2015 | British | 69 years |
| Gregory William Mutch | Secretary | 12 Feb 2010 | 30 Sept 2015 | British | - |
| Ian Kenneth Smith | Director | 29 Mar 2017 | 13 May 2022 | British | 58 years |
| James Watson | Director | 1 Dec 2008 | 12 Feb 2010 | British | 70 years |
| Jamie Alexander Smith | Director | 1 Dec 2008 | 18 Nov 2009 | British | 53 years |
| John Anthony Balderstone | Director | 11 Oct 1992 | 13 Jan 1998 | British | 85 years |
| John Matthews | Director | 1 Jan 1998 | 14 May 1999 | British | 76 years |
| Lawson Elliot | Director | 31 Dec 1996 | 1 Dec 2008 | British | 77 years |
| Michael Edward Harris | Director | 1 Dec 2008 | 12 Feb 2010 | British | 64 years |
| Michael John Auckland | Director | 10 Jan 2014 | 12 Sept 2014 | British | 67 years |
| Michael William Welton | Director | 3 Apr 1995 | 31 Dec 1999 | British | 80 years |
| Paul John Lester | Director | 1 Jan 2000 | 28 Aug 2002 | British | 77 years |
| Peter John Barnes | Director | 1 Feb 1993 | 12 Feb 2010 | British | 77 years |
| Peter John Barnes | Secretary | 16 Jun 1997 | 12 Feb 2010 | British | - |
| Philip Frank Kenneth Ellis | Director | 29 Mar 2017 | 29 Apr 2022 | British | 61 years |
| Robert Andrew Macdonald Watson | Secretary | 11 Oct 1992 | 30 Jun 1995 | British | - |
| Robert Mark Griffiths | Director | 18 Nov 2009 | 10 Jan 2014 | British | 73 years |
| Robert Sharp | Director | 11 Oct 1992 | 13 Oct 1995 | British | 82 years |
| Robin Cartwright Scoley | Director | 11 Oct 1992 | 30 Sept 1995 | British | 87 years |
| Russell Campbell Wymes | Director | 1 Sept 2005 | 9 Apr 2009 | British | 67 years |
| Simon Lafferty | Director | 29 Mar 2017 | 26 Nov 2021 | British | 56 years |
| Stephen Michael Tough | Director | 13 May 2014 | 31 Oct 2016 | British | 54 years |
| Steven Alexander Waterhouse | Director | 14 Oct 1992 | 16 Jun 1997 | British | 72 years |
| Steven Alexander Waterhouse | Secretary | 1 Jul 1995 | 16 Jun 1997 | British | - |
| Stuart John Chapman | Director | 1 Jan 1998 | 7 May 2004 | British | 72 years |
| Terence William Randall Espin | Director | 11 Oct 1992 | 31 Aug 1993 | British | 94 years |
| William Johnson Harkin Smith | Director | 14 Jan 2022 | 4 Nov 2024 | British | 49 years |