| Adrian Keith Walker | Director | 7 Jan 2016 | 27 Feb 2018 | British | 55 years |
| Alan Edward Moore | Director | 1 Apr 1996 | 30 Apr 1998 | British | 89 years |
| Andrew Chadwick Smithson | Director | 29 Jul 2019 | 19 Nov 2021 | British | 53 years |
| Andrew Kilpatrick Hutton | Director | 20 Mar 1992 | 31 Jan 2000 | British | 80 years |
| Barrie Peter Birch | Director | 20 Mar 1992 | 28 Dec 1999 | British | 79 years |
| Ben Stephenson | Director | 10 Mar 2016 | 19 Apr 2023 | British | 44 years |
| Catherine Martin | Director | 12 Dec 2012 | 31 Jan 2014 | British | 61 years |
| Claude Kwasi Sarfo-agyare | Director | 17 Aug 2009 | 30 May 2012 | British | 56 years |
| Claude Kwasi Sarfo-agyare | Secretary | 17 Aug 2009 | 1 Jun 2012 | British | - |
| Danielle Kara Reed | Director | 7 Jan 2016 | 29 Jul 2019 | British | 53 years |
| David Antony Totney | Director | 18 Apr 2002 | 20 Aug 2004 | British | 63 years |
| David Blair Pirrie | Director | 20 Mar 1992 | 17 Nov 1992 | British | 87 years |
| David James Stanley Oldfield | Director | 6 Sept 2012 | 2 Oct 2013 | British | 63 years |
| David John Postings | Director | 1 Dec 2006 | 6 Jul 2007 | British | 65 years |
| David Keith Potts | Director | 26 Apr 2000 | 30 Nov 2006 | British | 74 years |
| David Michael Singleton | Director | 11 May 1998 | 24 Feb 2004 | British | 69 years |
| Donald Kerr | Director | 12 Dec 2012 | 7 Jan 2016 | British | 57 years |
| Edward John Gerard Smith | Director | 2 Oct 2013 | 7 Jan 2016 | British | 65 years |
| Edward Michael George Ettershank | Director | 19 Apr 1999 | 27 Jul 2008 | British | 78 years |
| Frederick Michael Peter Riding | Director | 1 Apr 1996 | 29 Dec 2003 | British | 82 years |
| George Truett Tate | Director | 29 Jan 2004 | 29 Jun 2010 | American | 75 years |
| Gwynne Master | Director | 29 Mar 2021 | 11 Apr 2023 | Irish | 66 years |
| Howard Bartlett | Director | 20 Mar 1992 | 28 Dec 1999 | British | 86 years |
| Howard Bartlett | Secretary | 20 Mar 1992 | 22 Apr 1999 | British | - |
| Ian David Larkin | Director | 19 Sept 2011 | 31 Oct 2012 | Irish | 57 years |
| Ian David Lomas | Director | 22 Apr 1999 | 30 Apr 2014 | British | 66 years |
| Janet Anne Green | Director | 29 Oct 1993 | 4 Apr 2000 | British | 71 years |
| John Andrew Spence | Director | 28 Oct 1994 | 6 Jul 1999 | British | 74 years |
| John Arthur Davies | Director | 20 Mar 1992 | 30 Sept 1993 | British | 71 years |
| John Frederick Robson | Director | 12 Dec 2012 | 30 Jun 2015 | British | 68 years |
| John Lewis Davies | Director | 19 Jan 2000 | 30 Nov 2006 | British | 76 years |
| John Michael Jenkins | Director | 22 Apr 1999 | 1 Feb 2005 | British | 61 years |
| John Neil Maltby | Director | 7 Jan 2007 | 6 Sept 2012 | British | 63 years |
| Keith John Higley | Director | 1 Jan 1997 | 31 Jan 2000 | British | 79 years |
| Malcolm James Smith | Director | 20 Mar 1992 | 31 Dec 1996 | British | 88 years |
| Mario Emanuele Mazzocchi | Director | 1 Jan 2010 | 12 Oct 2012 | Italian | 52 years |
| Martin John Cooper | Director | 1 May 2003 | 19 Aug 2015 | British | 59 years |
| Michael William Shaw | Director | 26 Feb 1993 | 28 Oct 1994 | British | 78 years |
| Paul Gittins | Secretary | 13 Sept 2010 | 7 Feb 2024 | - | - |
| Paul Gregorius Brown | Director | 17 Nov 1992 | 1 Apr 1996 | British | 83 years |
| Paul Kevin Saunders | Director | 20 Mar 1992 | 31 Dec 2009 | British | 73 years |
| Paulette Jean Newman | Director | 22 Apr 1999 | 17 Aug 2009 | British | 70 years |
| Paulette Jean Newman | Secretary | 22 Apr 1999 | 17 Aug 2009 | British | - |
| Philip Haldane Nunnerley | Director | 20 Mar 1992 | 26 Feb 1993 | British | 79 years |
| Robert James Eddowes | Director | 6 Apr 1999 | 21 Jan 2013 | British | 70 years |
| Simon Andrew Featherstone | Director | 28 Jul 2008 | 29 Jul 2011 | British | 57 years |
| Steven John Websdale | Director | 20 Mar 1992 | 31 Dec 1996 | British | 69 years |
| Timothy Biddle | Director | 30 Mar 2023 | 5 Aug 2024 | British | 40 years |