| Adrian Howard Martin | Director | 1 Dec 2008 | 3 Oct 2016 | British | 76 years |
| Alistair Thomas Sloan | Director | 26 Oct 1994 | 13 Feb 1997 | British | 68 years |
| Amanda Catherine Matthews | Secretary | 22 Apr 2025 | 2 Jun 2025 | - | - |
| Andrew Michael Stoddart | Director | 2 Dec 1996 | 13 Feb 2001 | British | 80 years |
| Barbara Jane Moorhouse | Director | 13 Feb 1997 | 31 May 1998 | British | 68 years |
| Bernard Harry Asher | Director | 1 Mar 1998 | 30 Apr 2009 | British | 90 years |
| Cecil John Fleet | Director | 19 Jul 1991 | 30 Nov 1993 | British | 97 years |
| Christine Ridgeon | Director | 19 Jul 1991 | 15 Jan 1993 | British | 112 years |
| Clare Sheridan | Secretary | 31 May 2014 | 27 Jun 2024 | - | - |
| David Kevin Mulligan | Director | 1 Apr 2004 | 25 Feb 2013 | British | 57 years |
| Derek Peter Hornby | Director | 26 Oct 1994 | 24 May 1995 | British | 96 years |
| Derek Peter Hornby | Director | 16 Feb 1996 | 10 Apr 2002 | British | 96 years |
| Elizabeth Ann Peace | Director | 5 Nov 2012 | 4 May 2017 | British | 74 years |
| Geraldine Gallacher | Director | 24 May 1995 | 2 Sept 2004 | British | 67 years |
| Geraldine Gallacher | Director | 16 Aug 2007 | 31 Dec 2014 | British | 67 years |
| Gillian Carole Barr | Director | 2 Sept 2004 | 3 May 2012 | British | 68 years |
| Helen Mary Mason | Secretary | 27 Jun 2024 | 22 Apr 2025 | - | - |
| Isobel Mary Nettleship | Secretary | 3 Feb 2005 | 31 May 2014 | British | - |
| James Francis Power | Director | 26 Oct 1994 | 10 May 1995 | British | 94 years |
| James Robert Foster Raw | Director | 19 Jul 1991 | 28 Oct 1994 | British | 90 years |
| John Charles Spencer Mott | Director | 19 Jul 1991 | 4 Mar 1994 | British | 100 years |
| John James Clifford Lovell | Director | 26 Oct 1994 | 19 Apr 2007 | British | 71 years |
| John Michael Bishop | Director | 26 Oct 1994 | 12 Apr 2005 | British | 81 years |
| Jonathan Kim Walden | Director | 1 May 2001 | 6 May 2010 | British | 73 years |
| Kathy-ann Quashie | Director | 1 Jun 2021 | 31 Jul 2024 | British | 50 years |
| Lyle Cathcart | Director | 1 Jan 1993 | 28 Oct 1994 | British | 88 years |
| Malcolm Charles Cooper | Director | 9 Nov 2015 | 31 Aug 2024 | British | 67 years |
| Marr Grieve | Director | 19 Jul 1991 | 24 May 1995 | British | 91 years |
| Michael Alan Findlay | Director | 3 Oct 2016 | 28 Jul 2025 | British | 58 years |
| Patrick Jean-marie De Smedt | Director | 1 Dec 2009 | 31 Dec 2018 | Belgian | 71 years |
| Paul Raymond Smith | Director | 3 Mar 2003 | 5 Nov 2012 | British | 67 years |
| Paul Whitmore | Director | 1 Apr 2000 | 31 Dec 2013 | British | 71 years |
| Robert Archibald William Marshall | Director | 31 May 1995 | 15 Jan 1997 | British | 94 years |
| Robert Percy Barker | Director | 19 Jul 1991 | 5 Mar 1992 | British | 98 years |
| Sidney Charles Toy | Director | 19 Jul 1991 | 28 Oct 1994 | British | 96 years |
| Simon James Gulliford | Director | 1 Mar 2010 | 4 May 2018 | British | 68 years |
| Stephen Paul Crummett | Director | 25 Feb 2013 | 7 May 2024 | British | 61 years |
| Tracey Killen | Director | 5 May 2017 | 31 Dec 2023 | British | 65 years |
| William Raymond Johnston | Director | 14 Jun 1999 | 18 Jun 1999 | British | 81 years |
| William Raymond Johnston | Director | 14 Jun 1999 | 18 Jun 1999 | British | 81 years |
| William Raymond Johnston | Secretary | 19 Jul 1991 | 3 Feb 2005 | British | - |