| Adrian John Windo | Director | 18 Jul 1996 | 25 Apr 1997 | British | 67 years |
| Alexander George Hogg | Director | 31 May 2000 | 7 May 2002 | British | 76 years |
| Alison Janet Talbot | Secretary | 14 Aug 2000 | 19 Aug 2002 | British | - |
| Andrew David Briggs | Director | 8 Jan 2007 | 17 May 2010 | British | 59 years |
| Andrew Nicholas Davis | Director | 30 Dec 2012 | 11 Oct 2013 | British | 60 years |
| Angus Kenneth Cameron | Director | 17 Jul 2000 | 16 Feb 2001 | British | 68 years |
| Anthony Jonathan Reizenstein | Director | 1 Dec 2023 | 30 Jun 2024 | British | 69 years |
| Archibald Gerard Kane | Director | 2 Feb 1993 | 24 Oct 1994 | British | 73 years |
| Barbara Ann Reilly | Director | 2 Feb 1993 | 1 Apr 1996 | British | 71 years |
| Brian Malcolm Wilkinson | Director | 2 Feb 1993 | 2 Apr 1993 | British | 78 years |
| Catriona Margaret Herd | Director | 6 Jun 2017 | 26 Jan 2023 | British | 60 years |
| Christian Roy Torkington | Director | 1 Aug 2005 | 26 Jun 2009 | British | 63 years |
| Christina Ann Hankin | Secretary | 17 Sept 2018 | 31 Dec 2019 | - | - |
| Christopher Michael Wiscarson | Director | 26 Feb 1997 | 3 Mar 2000 | British | 74 years |
| Craig Cameron | Director | 6 Aug 2001 | 21 Jul 2005 | British | 66 years |
| Craig James Thornton | Director | 10 Dec 2021 | 1 Mar 2024 | British | 53 years |
| David Anthony Beaumont | Secretary | 31 Dec 2019 | 27 Oct 2021 | - | - |
| David Clarke | Secretary | 29 Jan 2015 | 17 Sept 2018 | - | - |
| David Frank Wilson | Director | 18 Jul 1996 | 15 Sept 1997 | British | 67 years |
| David Scott Graham | Director | 31 May 2000 | 19 Nov 2002 | British | 78 years |
| Deborah Lee Davis | Director | 18 Mar 2022 | 18 Mar 2025 | British | 62 years |
| Deborah Susan Gorski | Director | 16 Jan 1998 | 4 Feb 2000 | British | 60 years |
| Dennis Holt | Director | 18 Jul 1996 | 18 Feb 1997 | British | 77 years |
| Donald Aiken | Director | 31 May 2000 | 17 Oct 2001 | British | 70 years |
| Emma Jayne Watkins | Director | 1 Mar 2024 | 1 May 2025 | British | 52 years |
| Farhat Shah | Secretary | 18 Oct 2004 | 29 Jun 2005 | British | - |
| Finian O'boyle | Director | 14 Jul 1994 | 18 Apr 1997 | British | 69 years |
| Frederick John Randall | Director | 2 Feb 1993 | 1 Apr 1996 | British | 84 years |
| Gavin Macneill Stewart | Director | 9 Dec 2013 | 31 Dec 2019 | British | 66 years |
| Gavin Macneill Stewart | Director | 13 Jan 2020 | 14 Jan 2021 | British | 66 years |
| Graham Staples | Secretary | 12 Nov 1993 | 9 May 1994 | British | - |
| Helen Suzanne Rodgers | Secretary | 18 Jul 1996 | 27 Apr 2000 | British | - |
| Ian David Thompson | Director | 30 May 1997 | 21 Oct 2003 | British | 71 years |
| James Christopher Steuart Hillman | Director | 19 Aug 2019 | 31 Aug 2023 | British | 56 years |
| James Edward Clatworthy | Director | 27 Dec 2013 | 29 Feb 2016 | British | 58 years |
| James Masson Black | Director | 8 May 2014 | 31 Aug 2018 | British | 61 years |
| James Mcconville | Director | 21 Jul 2005 | 13 Mar 2006 | British | 69 years |
| Jeffrey Edward Sayers | Director | 9 Dec 2019 | 31 Dec 2020 | British | 55 years |
| John Douglas Irish | Director | 18 Jul 1996 | 31 Oct 1997 | British | 81 years |
| John Keith Taylor | Secretary | 9 May 1994 | 12 Jun 1995 | British | - |
| John Kenneth Elbourne | Director | 2 Feb 1993 | 4 Jul 1996 | British | 81 years |
| Jonathon Roderick Alan Bond | Director | 1 Sept 2019 | 14 May 2021 | British | 62 years |
| Karen Joanne Mckay | Secretary | 27 Oct 2021 | 18 May 2022 | - | - |
| Luke Henry Walter March | Director | 1 Sept 1993 | 1 Apr 1996 | British | 74 years |
| Luke Henry Walter March | Secretary | 2 Feb 1993 | 12 Nov 1993 | British | - |
| Mark Wilson | Director | 17 Mar 2023 | 30 Nov 2023 | British | 55 years |
| Marlene Keil | Secretary | 18 May 2022 | 1 Mar 2025 | - | - |
| Mervyn Kay Pedelty | Director | 28 Jan 1994 | 30 Jun 1994 | British | 76 years |
| Michael Charles Ramsay | Director | 2 Feb 1993 | 2 Jul 1993 | British | 80 years |
| Michael John Sommers | Director | 2 Feb 1993 | 31 Oct 1993 | British | 76 years |
| Michael Richard Poulding | Director | 1 Feb 1994 | 18 Jul 1996 | British | 74 years |
| Michael Ronald Downie | Director | 20 Sept 2023 | 1 Apr 2025 | British | 49 years |
| Nathan Victor Moss | Director | 4 Feb 2003 | 8 Jan 2007 | British | 70 years |
| Neil Lindsay Nicholson Machray | Director | 13 Mar 2006 | 31 Mar 2013 | British | 56 years |
| Newton Scott | Director | 31 May 2000 | 3 May 2002 | British | 79 years |
| Nigel Howard Passmore | Secretary | 27 Apr 2000 | 14 Aug 2000 | British | - |
| Paul Patrick Brown | Director | 18 Jul 1996 | 4 Feb 1997 | British | 78 years |
| Paul Robert Penney | Director | 28 Mar 2011 | 31 Aug 2012 | British | 65 years |
| Peter George Edwin Ayliffe | Director | 1 Feb 1994 | 31 Aug 1997 | British | 72 years |
| Peter James Jordan | Director | 12 Sept 2003 | 16 Sept 2004 | British | 64 years |
| Philip Duncan Loney | Director | 17 May 2010 | 27 Sept 2011 | British | 61 years |
| Philip Robert Grant | Director | 29 Aug 2019 | 10 Nov 2022 | British | 59 years |
| Robert William Fletcher | Director | 24 Jul 2009 | 8 May 2014 | British | 61 years |
| Robert Wilson Gibson | Director | 31 May 2000 | 6 May 2002 | British | 70 years |
| Roger David Wood | Director | 17 Nov 1994 | 1 Apr 1996 | British | 78 years |
| Roger Quentin Phillips | Secretary | 31 Jul 1995 | 18 Jul 1996 | British | - |
| Ronald Frank Cameron Taylor | Director | 8 Aug 2014 | 31 Dec 2017 | British | 59 years |
| Ronald James Whatford | Director | 21 Oct 2003 | 1 Aug 2005 | British | 77 years |
| Roy John Spragg | Director | 30 May 1997 | 31 May 2000 | British | 74 years |
| Sean William Lowther | Director | 10 Apr 2017 | 31 Dec 2020 | British | 65 years |
| Simon Peter Skinner | Director | 28 May 2002 | 29 Aug 2003 | British | 67 years |
| Sophie Jane O'connor | Director | 30 Sept 2019 | 30 Sept 2023 | British | 55 years |
| Tamsin Hooton | Secretary | 8 Aug 2014 | 8 Sept 2014 | - | - |
| Toby Emil Strauss | Director | 23 Nov 2011 | 8 Aug 2014 | British | 66 years |
| Tracey Caroline Nicholls | Secretary | 8 Sept 2014 | 29 Jan 2015 | - | - |
| Tracey Caroline Nicholls | Secretary | 19 Aug 2002 | 8 Aug 2014 | British | - |
| Trevor John Jones | Director | 30 May 1997 | 31 May 2000 | British | 75 years |