| Anbreen Malik | Director | 15 Jan 2019 | 11 Sept 2019 | British | 50 years |
| Andrea Margaret Blance | Director | 12 Apr 2013 | 4 Sept 2013 | British | 62 years |
| Andrew David Fairhurst | Secretary | 23 Aug 1993 | 19 Sept 2001 | British | - |
| Andrew David Fairhurst | Secretary | 30 Jun 2006 | 4 May 2010 | British | - |
| Andrew John Cyril Craven | Director | 28 Apr 2017 | 2 Nov 2021 | British | 48 years |
| Andrew Stuart Mckinnon | Director | 1 May 2001 | 10 Dec 2002 | British | 59 years |
| Carol Ann Dockrell | Secretary | 19 Sept 2001 | 30 Jun 2006 | British | - |
| Carolyn Elizabeth Rees | Director | 14 Jan 2005 | 1 Nov 2007 | British | 57 years |
| Catherine Rosemary Reid Avery | Director | 10 Aug 2006 | 28 Jan 2009 | British | 66 years |
| Christopher John Last | Director | 7 Nov 2007 | 19 Oct 2013 | British | 70 years |
| Christopher Michael Radford | Director | 7 Feb 2007 | 1 Mar 2009 | British | 68 years |
| David Geoffrey Hobbs | Director | 20 Aug 2009 | 8 Sept 2010 | British | 57 years |
| David Rough | Director | 30 May 1992 | 31 Dec 2001 | British | 75 years |
| Emma Elizabeth Douglas | Director | 14 Jun 2016 | 4 May 2021 | British | 61 years |
| Emma Miller Byron | Director | 25 Feb 2020 | 27 Jan 2023 | British | 46 years |
| Gareth John Hoskin | Director | 27 Jan 2000 | 23 Jun 2000 | British | 66 years |
| Gareth John Hoskin | Director | 14 Mar 2001 | 11 Dec 2003 | British | 66 years |
| Geoffrey Charles Towers | Director | 10 Nov 2010 | 7 Nov 2013 | British | 66 years |
| Graham Trevor Anthony Newitt | Director | 1 Nov 2006 | 6 Apr 2009 | British | 66 years |
| James Michael Bury | Director | 6 May 2003 | 6 Dec 2006 | British | 65 years |
| James Michael Bury | Director | 1 Nov 2007 | 31 Jul 2008 | British | 65 years |
| James Michael Bury | Director | 30 Nov 2010 | 31 Dec 2015 | British | 65 years |
| Jamshaid Islam | Director | 29 Sept 2010 | 4 Mar 2013 | British | 51 years |
| Jamshaid Islam | Director | 26 Jun 2015 | 15 Jan 2016 | British | 51 years |
| John Brackenridge Pollock | Director | 11 Dec 2003 | 10 Aug 2006 | British | 68 years |
| Jonathan Paul Maguire | Director | 11 Jun 1998 | 30 Oct 1998 | British | 66 years |
| Karl Simon Shaw | Director | 1 Nov 2018 | 1 Nov 2018 | British | 55 years |
| Lee Warren Dobson | Director | 1 Nov 2007 | 13 May 2009 | British | 60 years |
| Lorna Louise Shah | Director | 9 Oct 2021 | 22 Jul 2024 | British | 45 years |
| Marco Groot-wassink | Director | 2 Nov 2022 | 4 Apr 2025 | Dutch | 49 years |
| Mark Holweger | Director | 8 Dec 2015 | 21 Feb 2018 | British | 61 years |
| Mark Julian Gregory | Director | 20 Mar 2009 | 1 Sept 2013 | British | 63 years |
| Mark Julian Gregory | Director | 30 Jun 2015 | 9 Mar 2017 | British | 63 years |
| Mark Philip Screeton | Director | 23 Jan 2014 | 31 Dec 2014 | British | 62 years |
| Martin Charles Noone | Director | 25 Mar 2014 | 31 Dec 2014 | British | 60 years |
| Martin David Pengilly | Director | 9 Feb 2005 | 1 Nov 2007 | British | 59 years |
| Michael Anthony Christopher Hayden | Director | 30 May 1992 | 1 Nov 2001 | Irish | 64 years |
| Michael Joseph Davies | Director | 23 Jun 1999 | 2 Oct 2000 | British | 58 years |
| Michael Peter Rudge | Director | 2 Dec 2013 | 31 Dec 2014 | British | 64 years |
| Michael Peter Rudge | Director | 7 Oct 2015 | 31 Jan 2017 | British | 64 years |
| Michael William Dedman | Director | 10 Dec 2002 | 30 Apr 2007 | British | 78 years |
| Michelle Bella Barber | Director | N/A | 6 Aug 1993 | British | 74 years |
| Nicola Jane Burnand | Director | 26 Apr 2013 | 17 Jul 2014 | British | 56 years |
| Peter Julian Lomax | Director | 13 Nov 1997 | 1 Nov 2001 | British | 83 years |
| Peter Robert Knapton | Director | 28 Sept 1995 | 23 Jun 1999 | British | 77 years |
| Robert Peter Sewell | Director | 1 Nov 2001 | 27 Mar 2007 | Irish | 62 years |
| Simon John Cartlidge | Director | 29 Oct 2004 | 1 Nov 2007 | Welsh | 55 years |
| Simon Neil Hudson Lund | Director | 29 Jan 2001 | 6 May 2003 | British | 65 years |
| Simon Robert Pistell | Director | 21 Nov 2001 | 2 Aug 2010 | British | 59 years |
| Simon Robert Pistell | Director | 22 Apr 2013 | 26 Mar 2018 | British | 59 years |
| Simon Trevor Lloyd | Director | 23 May 2014 | 27 Apr 2015 | British | 66 years |
| Stephen Charles Abbott | Director | 28 Sept 1995 | 6 Apr 2001 | British | 71 years |
| Stephen David Thomas | Director | 5 May 2016 | 10 Sept 2018 | British | 62 years |
| Stephen Paul Harry | Director | 22 Jul 2009 | 1 Sept 2010 | British | 58 years |
| Stephen Whiteside | Director | 8 Jul 2002 | 30 Apr 2004 | British | 70 years |
| Stuart George Welch | Director | 13 May 2014 | 31 Dec 2014 | British | 58 years |
| Thomas Andrew Forwood Smith | Secretary | 30 May 1992 | 23 Aug 1993 | British | - |
| Trevor Cheal | Director | 1 May 2001 | 1 Nov 2001 | British | 62 years |