| Alan James Harris Stewart | Director | 1 Nov 2010 | 10 Jul 2014 | British | 66 years |
| Alistair James Willey | Director | 14 Sept 2018 | 27 Jun 2019 | British | 50 years |
| Amanda Mellor | Director | 30 Jul 2009 | 1 Feb 2019 | British | 62 years |
| Christopher Michael Williams | Director | 19 Jul 2000 | 31 Dec 2005 | British | 71 years |
| Graham John Oakley | Director | 15 Jun 2004 | 1 Sept 2009 | British | 70 years |
| Graham John Oakley | Secretary | 15 Nov 1992 | 10 Mar 1998 | British | - |
| Hamish Platt | Director | 1 Jul 2015 | 4 Apr 2016 | British | 54 years |
| Helen Alison Weir | Director | 5 Jun 2015 | 31 Mar 2018 | British | 64 years |
| Ian Dyson | Director | 17 Nov 2006 | 14 Jul 2010 | British | 64 years |
| Jennifer Caroline Fuller | Director | 27 Jun 2019 | 21 Nov 2023 | British | 44 years |
| John Anderson Lusher | Director | 15 Nov 1992 | 1 Apr 1993 | British | 93 years |
| John Keith Oates | Director | 15 Nov 1992 | 31 Jan 1999 | British | 84 years |
| Lara Louise Brown | Director | 14 Sept 2018 | 27 Jun 2019 | British | 45 years |
| Lindsay Dalton | Director | 31 Mar 2018 | 14 Sept 2018 | British | 45 years |
| Marc Bolland | Director | 14 Jul 2010 | 7 Feb 2011 | Dutch | 67 years |
| Michael Charles Sharpe | Director | 27 Jun 2019 | 29 Oct 2021 | British | 57 years |
| Nick James Folland | Director | 1 Feb 2019 | 21 Nov 2023 | British | 61 years |
| Nicola Joy Dulieu | Director | 31 Dec 2001 | 15 Jun 2004 | British | 63 years |
| Patricia Howell | Secretary | 8 Feb 2018 | 31 Aug 2022 | - | - |
| Paul Allan Friston | Director | 10 Jul 2014 | 5 Jun 2015 | British | 53 years |
| Robert John Ivens | Secretary | 10 Mar 1998 | 6 Oct 2016 | British | - |
| Robert William Chaigneau Colvill | Director | 15 Nov 1992 | 31 Dec 2001 | British | 86 years |
| Roger Aldridge | Director | 1 Apr 1993 | 19 Jul 2000 | British | 79 years |
| Scilla Grimble | Director | 4 Apr 2016 | 14 Sept 2018 | British | 53 years |
| Verity Chase | Secretary | 6 Oct 2016 | 8 Feb 2018 | - | - |