| Andrew Mark Parsons | Director | 2 Apr 2015 | 16 Jun 2015 | British | 60 years |
| Christina Ann Hankin | Secretary | 10 Sept 2018 | 31 Dec 2019 | - | - |
| Christopher Michael John Mathew | Director | 7 Mar 1995 | 31 Mar 2001 | Irish | 75 years |
| David Clarke | Secretary | 11 Jun 2018 | 10 Sept 2018 | - | - |
| David John Whitaker | Director | 26 Jun 1992 | 18 Apr 1995 | British | 63 years |
| Douglas Martin Claisse | Director | 26 Jun 1992 | 23 Apr 1997 | British | 91 years |
| Edward William Lally | Director | 24 Mar 1994 | 31 Dec 1996 | British | 75 years |
| Finbar Anthony O'dwyer | Director | 4 Sept 2008 | 31 Dec 2008 | Irish | 54 years |
| Graeme Burgess Riddoch | Director | 14 Jun 2002 | 1 Oct 2005 | British | 64 years |
| Graeme John Donaldson | Secretary | 11 Aug 2016 | 11 Jun 2018 | - | - |
| Heather Macdonald Logan | Director | 26 May 2004 | 14 Jan 2005 | British | 68 years |
| James Masson Black | Director | 20 Mar 2014 | 21 Sept 2016 | British | 61 years |
| John Michael Butler | Secretary | 11 Sept 2003 | 14 Sept 2009 | British | - |
| John Patrick Hiew | Director | 14 Jun 2002 | 5 Oct 2006 | British | 61 years |
| John Peter Horne Phillips | Director | 26 Jun 1992 | 8 Jul 1992 | British | 81 years |
| John Spellman | Director | 19 Aug 2002 | 14 Jan 2005 | British | 59 years |
| John Spellman | Director | 10 Nov 2005 | 8 Sept 2006 | British | 59 years |
| John Stanley Ferguson | Director | 24 Jul 1992 | 2 Sept 1993 | British | 79 years |
| John Stephen Edwards | Director | 24 Oct 2000 | 9 Jul 2002 | British | 70 years |
| John Van Der Wielen | Director | 6 Jul 2009 | 24 Jun 2010 | Australian | 59 years |
| John Warburton | Director | 9 Oct 2007 | 4 Sept 2008 | British | 66 years |
| John Warburton | Director | 1 Jan 2009 | 23 Jun 2010 | British | 66 years |
| Karen Joanne Mckay | Secretary | 14 Sept 2009 | 11 Aug 2016 | Other | - |
| Keith William Abercromby | Director | 22 May 2003 | 11 Jun 2004 | British | 61 years |
| Kenneth Arthur Swain | Director | 26 Jun 1992 | 2 May 1995 | British | 83 years |
| Mario Emanuele Mazzocchi | Director | 9 Dec 2015 | 20 Jul 2018 | Italian | 52 years |
| Martin Michael Hindley Brown | Director | 1 Jul 1993 | 15 May 1998 | British | 76 years |
| Michael John Richardson | Director | 26 Jun 1992 | 6 Dec 1994 | British | 78 years |
| Michael Stuart Robinson | Director | 10 Dec 1997 | 9 Jul 2002 | British | 61 years |
| Neil Lindsay Nicholson Machray | Director | 24 Jun 2010 | 31 Mar 2013 | British | 56 years |
| Paul Gerard Mcnamara | Director | 15 Aug 2006 | 9 Oct 2007 | Irish | 59 years |
| Peter Anthony Lineham | Director | 19 Sept 1994 | 8 Aug 1997 | British | 78 years |
| Peter John Veale | Secretary | 4 Aug 2000 | 11 Sept 2003 | British | - |
| Philip John Hampden-smith | Director | 1 Oct 1992 | 1 Jan 1994 | British | 67 years |
| Philip Robert Grant | Director | 17 Aug 2006 | 11 Dec 2006 | British | 59 years |
| Philip Robert Grant | Director | 21 Sept 2016 | 10 Nov 2022 | British | 59 years |
| Richard Andrew Jones | Director | 18 Jun 2012 | 7 Dec 2015 | British | 53 years |
| Richard William May | Director | 26 Jun 1992 | 18 Dec 1995 | British | 74 years |
| Richard William May | Secretary | 26 Jun 1992 | 18 Dec 1995 | British | - |
| Robert Alan Devey | Director | 11 Dec 2006 | 6 Jul 2009 | British | 57 years |
| Robert William Fletcher | Director | 23 Jun 2010 | 16 Apr 2014 | British | 61 years |
| Roland Gordon Ward | Director | 23 Apr 1997 | 27 Mar 2003 | British | 80 years |
| Ronald Frank Cameron Taylor | Director | 16 Apr 2014 | 31 Dec 2017 | British | 59 years |
| Sean William Lowther | Director | 10 Apr 2017 | 31 Dec 2022 | British | 65 years |
| Simon David Massey | Director | 11 Jul 2013 | 20 Mar 2014 | British | 61 years |
| Stewart Laver | Director | 19 Sept 1994 | 20 Feb 1995 | British | 76 years |
| Susan Annabel Margaret Fogarty | Secretary | 2 May 1997 | 4 Aug 2000 | British | - |
| Susan Leigh Tunstall | Director | 25 Jul 2002 | 10 Nov 2005 | British | 66 years |
| Thomas James Whittaker | Secretary | 19 Jan 1996 | 2 May 1997 | British | - |