| Alex Raistrick | Director | 29 Sept 2020 | 28 Jul 2021 | British | 40 years |
| Ann Elizabeth Ling | Director | 27 Jul 2021 | 3 May 2022 | British | 48 years |
| Benedict John Spurway Mathews | Director | 8 Nov 2017 | 17 Dec 2018 | British | 58 years |
| Cloe Nandlal | Secretary | 23 Sept 2014 | 29 Sept 2015 | - | - |
| Dale Millar | Director | 27 Jul 2021 | 13 Jun 2025 | British | 53 years |
| Elaine Williams | Director | 16 Oct 2013 | 18 Dec 2014 | British | 60 years |
| Elizabeth Anne Hobley | Director | 15 Jan 2002 | 5 Sept 2002 | British | 55 years |
| Emma Suzanne Ferley | Secretary | 2 Sept 2010 | 20 Mar 2012 | - | - |
| Hannah Elizabeth Shepherd | Director | 12 Dec 2012 | 7 Nov 2017 | British | 43 years |
| Heather Nicol | Secretary | 17 Sept 2001 | 6 Jul 2010 | British | - |
| Ian David Dawson | Director | 1 Aug 1996 | 20 Apr 1999 | British | 82 years |
| James Dominic Morris | Director | 8 Nov 2017 | 29 Sept 2020 | British | 54 years |
| James Dominic Morris | Secretary | 9 Nov 2017 | 29 Sept 2020 | - | - |
| Jane Fahey | Secretary | 12 Nov 2015 | 9 Nov 2017 | - | - |
| John Hume Mckenzie | Director | 20 Dec 1999 | 17 Sept 2001 | British | 71 years |
| John Hume Mckenzie | Director | 13 May 2010 | 28 Mar 2014 | British | 71 years |
| John Hume Mckenzie | Secretary | 20 Dec 1999 | 17 Sept 2001 | British | - |
| Karen Patricia Pisarczyk | Director | 17 Dec 2018 | 1 Oct 2020 | American | 57 years |
| Kate Elizabeth Hudson | Director | 12 Dec 2012 | 16 Oct 2013 | British | 46 years |
| Kate Elizabeth Hudson | Director | 10 Sept 2014 | 23 Dec 2015 | British | 46 years |
| Katherine Dean | Secretary | 12 Apr 2013 | 23 Sept 2014 | - | - |
| Kenneth Henry Gordon Coales | Director | 25 Aug 1993 | 20 Dec 1999 | British | 79 years |
| Kenneth Henry Gordon Coales | Secretary | 7 Sept 1991 | 20 Dec 1999 | British | - |
| Lisa Marvin | Director | 23 Dec 2015 | 22 Jul 2016 | British | 64 years |
| Mark Richard Chambers | Director | 22 Jul 2016 | 8 Nov 2017 | British | 62 years |
| Mohammad Asghar Mehdi Syed | Director | 29 Sept 2020 | 28 Jul 2021 | British | 39 years |
| Nadia Edward | Secretary | 29 Sept 2020 | 18 Feb 2022 | - | - |
| Nicola Suzanne Black | Director | 28 Jun 2004 | 14 May 2010 | British | 59 years |
| Paul Andrew Stafford | Director | 17 Sept 2001 | 1 May 2010 | British | 60 years |
| Peerr Martin Maynard | Director | 7 Sept 1991 | 12 Dec 1994 | British | 73 years |
| Peter Francis Atkins | Director | 20 Apr 1999 | 19 Sept 2001 | British | 77 years |
| Peter James Harvey | Director | 15 Jan 2002 | 12 Sept 2002 | Other | 59 years |
| Peter John Wrangham | Director | 7 Sept 1991 | 20 Nov 1991 | British | 91 years |
| Robert Hugh Musgrove | Director | 12 Sept 2002 | 28 Jun 2004 | Other | 58 years |
| Robert Hugh Musgrove | Director | 13 May 2010 | 31 Dec 2013 | British | 58 years |
| Sarah Caroline Gott | Director | 13 May 2010 | 5 Dec 2012 | British | 50 years |
| Stacey Arnold | Secretary | 20 Mar 2012 | 12 Apr 2013 | - | - |
| Stephen Owen | Director | 13 May 2010 | 21 Apr 2011 | British | 45 years |
| Stuart Duncan Pearce | Director | 19 Sept 2001 | 15 Jan 2002 | British | 73 years |
| Theodore Michael Mcintyre | Director | 6 Nov 1992 | 1 Aug 1996 | British | 84 years |
| Timothy William O'brien | Director | 7 Sept 1991 | 7 Sept 1994 | British | 78 years |