| Alexandra Francis Fletcher | Secretary | 10 Oct 2000 | 20 May 2002 | British | - |
| Andrea Margaret Blance | Director | 21 Apr 2020 | 14 Aug 2020 | British | 61 years |
| Andrew Nicholas Davis | Director | 30 Dec 2012 | 11 Oct 2013 | British | 60 years |
| Ann Barrie Simmons | Secretary | 20 May 2002 | 7 Aug 2002 | British | - |
| Anthony Jonathan Reizenstein | Director | 23 Apr 2021 | 30 Jun 2024 | British | 69 years |
| Antonio Lorenzo | Director | 5 Mar 2020 | 30 May 2023 | Spanish | 59 years |
| Catharine Lucy Cheetham | Director | 21 Apr 2020 | 9 Sept 2021 | British | 62 years |
| Catriona Margaret Herd | Director | 6 Jun 2017 | 29 Aug 2019 | British | 60 years |
| Charles Andrew Anderson | Director | 5 Apr 1994 | 2 Jan 1997 | British | 70 years |
| Charles Grant Thomson | Director | 27 Apr 2000 | 31 Dec 2000 | British | 77 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 | 23 Mar 1992 | 3 Mar 2000 | British | 74 years |
| David Clarke | Secretary | 29 Jan 2015 | 17 Sept 2018 | - | - |
| David George Poulton | Director | 23 Mar 1992 | 31 Aug 1994 | British | 80 years |
| Deborah Lee Davis | Director | 18 Mar 2022 | 18 Mar 2025 | British | 62 years |
| Deborah Susan Gorski | Director | 21 Aug 1995 | 4 Feb 2000 | British | 60 years |
| Dennis James Stacey | Director | 16 Dec 1998 | 4 Feb 2000 | British | 75 years |
| Donald Mackechnie | Director | 5 Nov 2018 | 21 Apr 2020 | British | 52 years |
| Farhat Shah | Secretary | 18 Oct 2004 | 29 Jun 2005 | British | - |
| Fiona Mitchell | Secretary | 1 Jul 2009 | 15 Jun 2010 | British | - |
| Gavin Macneill Stewart | Director | 9 Dec 2013 | 22 Aug 2019 | British | 66 years |
| Geoffrey Pigott | Director | 2 Jan 1997 | 4 Oct 2000 | British | 75 years |
| Hugo Pelham Thorman | Director | 23 Mar 1992 | 10 Jun 1994 | British | 72 years |
| Ian David Thompson | Director | 1 Jul 1993 | 21 Oct 2003 | British | 71 years |
| James Christopher Steuart Hillman | Director | 19 Mar 2020 | 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 | 7 Aug 2002 | 13 Mar 2006 | British | 69 years |
| Jane Elizabeth Mary Curtis | Director | 21 Apr 2020 | 7 Oct 2022 | British | 65 years |
| Jennifer Marion Maclean | Secretary | 15 Jun 2010 | 2 Mar 2011 | - | - |
| Jesujuwonlo Williams | Secretary | 29 Mar 2024 | 12 Sept 2024 | - | - |
| Joanna Kate Harris | Director | 29 Sept 2023 | 4 Jun 2025 | British | 52 years |
| Joanne Margaret Jolly | Secretary | 31 Dec 2019 | 28 Mar 2024 | - | - |
| John Francis Hylands | Director | 21 Apr 2020 | 31 Mar 2021 | British | 74 years |
| Jonathan Scott Wheway | Director | 1 Aug 2022 | 31 Oct 2025 | British | 59 years |
| Jonathon Roderick Alan Bond | Director | 21 Apr 2020 | 14 May 2021 | British | 62 years |
| Malcolm Leslie Sykes | Director | 1 Jan 2001 | 30 Jun 2003 | British | 75 years |
| Martyn Gerald Mccarthy | Secretary | 1 May 1993 | 10 Jun 1994 | British | - |
| Michael David Green | Director | 1 Apr 2003 | 25 Jul 2008 | British | 74 years |
| Michael Richard Poulding | Director | 1 Jan 2001 | 5 Jun 2002 | British | 74 years |
| Michael Ronald Downie | Director | 1 Sept 2023 | 15 Jan 2024 | British | 49 years |
| Neil Lindsay Nicholson Machray | Director | 13 Mar 2006 | 31 Mar 2013 | British | 56 years |
| Nicholas Edward Tucker Prettejohn | Director | 6 Feb 2020 | 30 Sept 2021 | British | 65 years |
| Paul Martin Forster | Secretary | 15 Nov 1995 | 10 Jan 1997 | British | - |
| Paul Robert Penney | Director | 14 Aug 2009 | 31 Aug 2012 | British | 65 years |
| Philip Duncan Loney | Director | 12 Apr 2011 | 27 Sept 2011 | British | 61 years |
| Rachel Anne Messenger | Director | 29 Aug 2019 | 6 Dec 2019 | British | 43 years |
| Robert William Fletcher | Director | 28 Mar 2011 | 8 May 2014 | British | 61 years |
| Roger Brian Peck | Secretary | 10 Jun 1994 | 15 Nov 1995 | British | - |
| Roger Lionel Bevan | Director | 23 Mar 1992 | 12 Nov 1993 | British | 80 years |
| 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 | 23 Mar 1992 | 31 Dec 2000 | British | 74 years |
| Roy John Spragg | Secretary | 23 Mar 1992 | 1 May 1993 | British | - |
| Scott Cameron Guild | Director | 29 Jul 2019 | 6 Dec 2019 | British | 58 years |
| Sean William Lowther | Director | 10 Apr 2017 | 21 Apr 2020 | British | 65 years |
| Sharon Noelle O'connor | Secretary | 10 Jan 1997 | 10 Oct 2000 | Irish | - |
| Sophie Jane O'connor | Director | 21 Apr 2020 | 30 Sept 2023 | British | 55 years |
| Stephen Andrew Maran | Director | 23 Mar 1992 | 31 Dec 1999 | British | 85 years |
| Tamsin Hooton | Secretary | 8 Aug 2014 | 8 Sept 2014 | - | - |
| Terry Marris | Director | 23 Mar 1992 | 30 Oct 1992 | British | 76 years |
| Toby Emil Strauss | Director | 23 Nov 2011 | 8 Aug 2014 | British | 66 years |
| Tracey Caroline Nicholls | Secretary | 2 Mar 2011 | 8 Aug 2014 | - | - |
| Tracey Caroline Nicholls | Secretary | 8 Sept 2014 | 29 Jan 2015 | - | - |
| Tracey Caroline Nicholls | Secretary | 7 Aug 2002 | 1 Jul 2009 | British | - |
| Trevor John Jones | Director | 23 Mar 1992 | 4 Oct 2000 | British | 75 years |