| Andrew Phillip Turner | Director | 22 Jun 2012 | 27 Nov 2013 | British | 57 years |
| Anthony Stephen Holgate | Director | 22 Apr 1997 | 19 Oct 2004 | British | 72 years |
| Barbara Olwyn Ronson | Director | 18 Feb 2004 | 16 Sept 2004 | British | 84 years |
| Barbara Olwyn Ronson | Director | 21 Jul 2006 | 23 May 2007 | British | 84 years |
| Brian Parry | Director | 22 Apr 1997 | 6 Oct 2009 | British | 96 years |
| Bruce Roger Bendell | Director | 19 Dec 2003 | 31 Jan 2007 | British | 57 years |
| Bryan Antony Homan | Director | 10 Dec 2009 | 18 Sept 2019 | British | 61 years |
| Christopher Graham Matthews | Director | 18 Sept 2019 | 23 Jun 2025 | British | 53 years |
| Christopher James Peacock | Director | 27 Jun 2011 | 4 Feb 2015 | British | 43 years |
| Clive Harry Elphick | Director | 2 Feb 2006 | 20 Feb 2007 | British | 70 years |
| Daniel William Fowler | Director | 20 Jan 2014 | 30 Nov 2018 | British | 55 years |
| David Henry Crawshaw | Director | 5 Feb 2007 | 31 Dec 2008 | British | 78 years |
| David Henry Crawshaw | Director | 20 Jan 2009 | 12 Jul 2022 | British | 78 years |
| Deborah Elizabeth Morton | Director | 22 Apr 1997 | 30 Mar 2011 | British | 73 years |
| Derek Green | Director | 22 Apr 1997 | 8 Dec 2003 | British | 86 years |
| Don Yates | Director | 22 Apr 1997 | 1 Oct 2009 | British | 85 years |
| Eric Harper | Director | 22 Apr 1997 | 31 Jul 1997 | British | 88 years |
| Francis George White | Director | 16 Feb 2006 | 29 Nov 2009 | British | 65 years |
| Glenville John Hester | Director | 13 Dec 2011 | 9 Aug 2016 | British | 77 years |
| Gregory Pill-fairbrother | Director | 13 Dec 2011 | 9 Jan 2019 | British | 53 years |
| Joan Mary Burrows | Director | 13 Nov 2019 | 12 Jun 2025 | British | 75 years |
| John Anthony Sanders | Director | 10 Dec 2009 | 31 Mar 2012 | British | 58 years |
| John Cronnolley | Director | 16 Sept 2004 | 21 Jul 2006 | British | 71 years |
| John Gerald Smith | Director | 1 Aug 2014 | 4 Jul 2018 | British | 91 years |
| John Kirk Shepley | Director | 16 Jan 2019 | 27 Sept 2023 | British | 82 years |
| John Mayson Whalley | Director | 22 Apr 1997 | 19 Dec 2003 | British | 94 years |
| John Richard Tetlow | Director | 10 Apr 1997 | 22 Apr 1997 | British | 84 years |
| John Richard Tetlow | Secretary | 10 Apr 1997 | 31 Dec 1997 | British | - |
| John Rutherford | Director | 19 May 2010 | 27 Jun 2011 | British | 67 years |
| Jonathan Paul Farrelly | Director | 18 Sept 2019 | 28 Mar 2025 | British | 45 years |
| Julie Taylor | Director | 10 Dec 2009 | 31 Mar 2013 | British | 63 years |
| Kathleen Mary Atkinson | Director | 23 May 1997 | 7 Jun 2010 | British | 91 years |
| Kevan James Helsby | Director | 22 Apr 1997 | 18 Feb 2004 | British | 76 years |
| Marcus Robert Bluett Johnstone | Director | 5 Nov 2013 | 5 Jul 2017 | British | 67 years |
| Mark Donaghy | Director | 29 Jan 2014 | 30 Apr 2015 | British | 52 years |
| Mark Donaghy | Director | 19 May 2015 | 3 Sept 2018 | British | 52 years |
| Mark John Wilde | Director | 28 Jul 2014 | 16 Jul 2018 | British | 59 years |
| Mark Perks | Director | 5 Jul 2017 | 27 Jun 2019 | British | 69 years |
| Martin Frederick Bradbury | Director | 22 Apr 1997 | 19 Oct 2004 | British | 71 years |
| Martin Padley | Director | 17 Mar 2009 | 1 Oct 2009 | British | 60 years |
| Michael Davies | Director | 19 Oct 2004 | 17 May 2005 | British | 73 years |
| Michael Devaney | Director | 18 Jan 2010 | 5 Nov 2013 | British | 89 years |
| Nicholas David Taylor | Director | 11 Jun 2004 | 6 Feb 2006 | British | 63 years |
| Patricia Case | Director | 17 May 2005 | 22 Jun 2012 | British | 94 years |
| Patrick Eugene Mccloskey | Director | 22 Apr 1997 | 19 Dec 2003 | British | 81 years |
| Pauline Gail Roscoe | Secretary | 22 Apr 1997 | 12 Mar 2002 | British | - |
| Peter Norman Applewhite | Director | 10 Apr 1997 | 22 Apr 1997 | British | 81 years |
| Phillida Gail Sinclair Entwistle | Director | 22 Apr 1997 | 30 Sept 2007 | British | 82 years |
| Robert David Armstrong | Director | 22 Apr 1997 | 2 Feb 2006 | British | 77 years |
| Stephen Michael Rock | Director | 23 May 2007 | 19 May 2010 | British | 67 years |
| Steven David Jones | Director | 28 Apr 2017 | 22 Nov 2023 | British | 52 years |
| Stuart David Hamilton | Director | 19 Dec 2016 | 18 Sept 2019 | British | 47 years |
| Vanessa Ashworth | Director | 17 Jul 2019 | 16 Sept 2020 | British | 54 years |