| Adrian Timothy Rigby | Director | 9 Jun 2009 | 22 May 2012 | British | 60 years |
| Alexa Jane Coates | Director | 19 Feb 2015 | 3 Aug 2017 | British | 56 years |
| Brian Carney | Director | 1 Mar 1999 | 30 Dec 2002 | British | 70 years |
| Bryan Bulford | Director | 26 May 2015 | 25 Apr 2019 | British | 70 years |
| Christopher David Harris | Director | 1 Mar 1995 | 6 Feb 1997 | British | 71 years |
| Christopher Raymond Kell | Director | 30 Dec 2002 | 1 Sept 2004 | British | 68 years |
| Christopher William Jackson Kent | Secretary | 1 Jan 2024 | 16 May 2025 | - | - |
| David William Baker | Director | 1 Jan 1993 | 13 Nov 1998 | British | 84 years |
| David William Gilman | Director | 6 May 1992 | 31 Oct 2003 | British | 74 years |
| Edward Paul Lester | Director | 6 May 1992 | 1 Jul 1992 | British | 76 years |
| Frances Julie Niven | Secretary | 8 Dec 2003 | 25 Apr 2006 | British | - |
| Gavin Paul Hewitt | Director | 11 Aug 2011 | 23 Jan 2015 | British | 47 years |
| Gayle Helen Lacey | Director | 14 Sept 2018 | 17 Mar 2020 | British | 47 years |
| Geoffrey William Evans | Director | 6 May 1992 | 16 Mar 1998 | British | 76 years |
| George William Bayer | Secretary | 21 Feb 2008 | 12 Sept 2008 | British | - |
| Graham Edward Picken | Director | 6 May 1992 | 30 Dec 2002 | British | 77 years |
| Hollie Rheanna Wood | Secretary | 24 Sept 2010 | 24 Jul 2013 | - | - |
| Ian Robert Leech | Director | 15 Dec 1993 | 1 Mar 1995 | British | 66 years |
| Jacqueline Marie Gentles | Secretary | 27 Sept 2021 | 31 Dec 2023 | - | - |
| James Peter Royle | Director | 30 Jul 2019 | 31 Dec 2022 | British | 49 years |
| Jennifer Canty | Secretary | 6 Nov 2019 | 16 Jul 2021 | - | - |
| Joanne Marie Dickinson | Director | 1 Jan 2024 | 31 Jul 2025 | British | 55 years |
| Jodi Emma Rao | Director | 11 Nov 2019 | 31 Dec 2023 | British | 45 years |
| John Hume Mckenzie | Secretary | 6 May 1992 | 1 Jul 2001 | British | - |
| John Kenneth Adcock | Director | 1 Jul 1992 | 31 Jan 1993 | British | 79 years |
| Katherine Dean | Secretary | 24 Jul 2013 | 26 Jan 2016 | - | - |
| Keith Victor Smithson | Director | 30 Sept 1997 | 30 Jul 1999 | Irish | 64 years |
| Larissa Wilson | Secretary | 26 Jan 2016 | 28 Jun 2017 | - | - |
| Leianne Taylor | Secretary | 20 Mar 2019 | 18 Oct 2019 | - | - |
| Lorna Youssouf | Secretary | 28 Jun 2017 | 28 Feb 2018 | - | - |
| Malcolm James Brookes | Director | 19 Dec 2003 | 9 Jun 2011 | British | 71 years |
| Mark Harris | Director | 26 Oct 2015 | 31 Dec 2022 | British | 64 years |
| Mark Vivian Pearce | Secretary | 15 Nov 2002 | 8 Dec 2003 | British | - |
| Michael John Russell-brown | Director | 1 Jan 2006 | 2 Jun 2015 | British | 78 years |
| Miles Edward Rothbury | Director | 25 Nov 2019 | 30 Jun 2021 | British | 42 years |
| Molly Ranger | Secretary | 28 Feb 2018 | 20 Mar 2019 | - | - |
| Nicholas David Hampton | Director | 12 Feb 2014 | 4 Nov 2014 | British | 57 years |
| Nivedita Subramanian | Director | 26 Oct 2015 | 28 Jun 2017 | British | 46 years |
| Noel Paul Quinn | Director | 19 Jul 2007 | 31 Mar 2011 | British | 64 years |
| Noel Paul Quinn | Director | 6 Feb 1997 | 31 Mar 2000 | British | 64 years |
| Pauline Louise Mcquillan | Secretary | 25 Apr 2006 | 21 Feb 2008 | British | - |
| Richard Andrew Carter | Director | 11 Nov 2011 | 30 Jun 2015 | British | 65 years |
| Richard Davies | Director | 29 Oct 2014 | 10 Jul 2017 | British | 47 years |
| Richard Lelong | Director | 23 Jun 2014 | 30 Sept 2015 | French | 57 years |
| Robert David Lane | Director | 30 Dec 2002 | 1 Sept 2004 | British | 67 years |
| Robert Francis Carver | Director | 22 May 2012 | 22 Nov 2018 | British | 67 years |
| Robert Hugh Musgrove | Secretary | 1 Jul 2001 | 15 Nov 2002 | Other | - |
| Robert Ian Mcelroy | Director | 8 May 2017 | 29 Mar 2019 | British | 46 years |
| Sanjay Sankaran Nair | Director | 3 May 2018 | 31 Aug 2021 | Indian | 58 years |
| Sarah Caroline Gott | Secretary | 28 Oct 2008 | 24 Sept 2010 | British | - |
| Stephen Andrew Bottomley | Director | 26 Jul 2004 | 19 Jul 2007 | British | 67 years |
| Stephen Walter Simpson | Director | 1 Mar 1995 | 15 Jan 1996 | British | 77 years |
| Steven Richard Box | Director | 8 Dec 2010 | 10 Feb 2014 | British | 62 years |
| Timothy Victor Holmes | Director | 6 Feb 1997 | 30 Dec 2002 | British | 74 years |
| Timothy Victor Holmes | Director | 26 Jul 2004 | 31 Dec 2005 | British | 74 years |
| Wallace George William Stein | Director | 1 Jul 1992 | 31 Mar 2000 | British | 74 years |
| Warwick Alan George Long | Director | 13 Nov 2012 | 31 May 2015 | British | 60 years |
| Will Turner | Director | 26 Jul 2022 | 31 Dec 2024 | British | 39 years |