| Alan Leonard Whitnall | Secretary | 14 Dec 2005 | 29 May 2009 | British | - |
| Arnold Mark Threapleton | Director | 18 Apr 2017 | 30 Jun 2020 | British | 72 years |
| Carla Lucy Stockton-jones | Director | 1 Jul 2020 | 3 Jul 2023 | British | 54 years |
| Catherine Acton-brazier | Director | 4 Nov 2019 | 31 Dec 2020 | British | 56 years |
| Colin Brown | Director | 14 Dec 2005 | 31 May 2019 | British | 58 years |
| David Robert Skepper | Director | 1 Dec 2004 | 14 Dec 2005 | British | 62 years |
| David Robert Skepper | Director | 20 Feb 2023 | 1 Sept 2023 | British | 62 years |
| Derek Bradley | Director | 1 Jan 1993 | 14 Dec 2005 | British | 82 years |
| Frank Albert Carter | Director | 21 Oct 1991 | 14 Dec 2005 | British | 88 years |
| Gary James Nolan | Director | 18 Nov 2008 | 28 Dec 2016 | British | 70 years |
| Janine Summers | Director | 1 Apr 2022 | 22 Jun 2022 | British | 55 years |
| John Highton Myers | Director | 21 Oct 1991 | 7 Aug 1997 | British | 85 years |
| John Highton Myers | Secretary | 21 Oct 1991 | 7 Aug 1997 | British | - |
| Leslie Brian Warneford | Director | 14 Dec 2005 | 26 Apr 2013 | British | 78 years |
| Mark Andrew Adamson | Director | 11 Aug 1997 | 14 Dec 2005 | British | 64 years |
| Mark Andrew Adamson | Secretary | 1 Jun 2005 | 14 Dec 2005 | British | - |
| Matthew James Cranwell | Director | 1 Jul 2018 | 20 Feb 2023 | British | 45 years |
| Michael Frank Carter | Director | 18 Jun 2002 | 14 Dec 2005 | British | 58 years |
| Michael John Vaux | Director | 31 Mar 2009 | 28 Dec 2016 | British | 55 years |
| Michael John Vaux | Secretary | 29 May 2009 | 30 Jul 2024 | British | - |
| Michelle Catherine Hargreaves | Director | 1 Jul 2013 | 1 Jul 2018 | British | 63 years |
| Michelle Catherine Hargreaves | Director | 31 Dec 2020 | 1 Apr 2022 | British | 63 years |
| Paul Graham Lynch | Director | 28 Dec 2016 | 18 Apr 2017 | British | 64 years |
| Paul Norton Hill | Director | 21 Oct 1991 | 31 Mar 2006 | British | 78 years |
| Robert Gervase Andrew | Director | 31 Mar 2009 | 28 Dec 2016 | British | 63 years |
| Robert Montgomery | Director | 31 Mar 2009 | 22 Mar 2017 | British | 74 years |
| Robert Stanley Dorr | Director | 1 Sept 1998 | 31 Dec 2000 | British | 72 years |
| Roger Geoffrey Butcher | Secretary | 7 Aug 1997 | 31 May 2005 | British | - |
| Rupert Miles Cox | Director | 22 Jun 2022 | 31 Aug 2023 | British | 46 years |
| Samuel Derek Greer | Director | 10 Mar 2010 | 28 Dec 2016 | British | 58 years |
| Stephen Thomas Sanderson | Director | 21 Oct 1991 | 4 Jul 2004 | British | 74 years |