| Alan Paul Busson | Secretary | 15 Mar 2006 | 29 Sept 2006 | British | - |
| Alexander Park Leitch | Director | 6 Sept 1992 | 6 Dec 1995 | British | 79 years |
| Amanda Louise Knott | Secretary | 29 Sept 2006 | 25 Jul 2013 | British | - |
| Ann Claire Blundell | Secretary | 25 Jul 2013 | 13 Mar 2014 | - | - |
| Charlotte Denise Murphy | Director | 1 Nov 2018 | 28 Jul 2021 | British | 44 years |
| Corina Katherine Ross | Secretary | 16 Mar 2011 | 25 Jul 2013 | British | - |
| Georgina Farrell | Director | 17 Oct 2014 | 18 Dec 2017 | Irish | 50 years |
| Georgina Kaye Fleet | Director | 12 Mar 2024 | 17 Jun 2025 | British | 51 years |
| Helen Frances Leigh Rogers | Secretary | 14 Jul 2008 | 2 Dec 2011 | British | - |
| Iain John Brumpton | Director | 5 Feb 2019 | 28 Jul 2021 | British | 54 years |
| Ian Ritchie | Secretary | 25 Jul 2013 | 13 Mar 2014 | - | - |
| James Douglas Sutherland | Director | 25 Jul 2013 | 20 Oct 2017 | British | 52 years |
| Jayne Michelle Meacham | Secretary | 1 Nov 2006 | 2 May 2008 | British | - |
| Jeanette Ann Harris | Director | 19 Nov 2012 | 31 Dec 2018 | British | 62 years |
| John Herbert Keppel | Director | 28 Jul 2021 | 31 Jan 2025 | New Zealander | 56 years |
| Kate Mary Elizabeth Brightmore | Secretary | 29 Jul 2004 | 15 Mar 2006 | British | - |
| Keith John Davies | Director | 22 Oct 1996 | 10 Dec 1998 | British | 79 years |
| Kenneth William Ballard Inglis | Director | 6 Sept 1992 | 29 Apr 1994 | British | 83 years |
| Lily Olisa Holding | Director | 29 Jul 2004 | 27 May 2005 | British | 63 years |
| Martin David Wibberley | Director | 16 Feb 1995 | 13 Jun 1995 | British | 81 years |
| Nigel Lowe | Director | 27 May 2005 | 30 Jun 2013 | British | 74 years |
| Peter Charles Campbell | Director | 2 Dec 1996 | 31 Jul 2014 | British | 68 years |
| Peter Charles Howe | Director | 24 Jul 2003 | 29 Jul 2004 | British | 80 years |
| Peter Charles Howe | Secretary | 6 Sept 1992 | 29 Jul 2004 | British | - |
| Phil Andrew Hodkinson | Director | 6 Dec 1995 | 13 Aug 2001 | British | 68 years |
| Philip Smith | Director | 6 Sept 1992 | 22 Oct 1996 | British | 79 years |
| Ronan Cremin | Director | 28 Jul 2021 | 12 Dec 2022 | Irish | 53 years |
| Siv Anita Fernqvist | Director | 15 Dec 2022 | 15 Jul 2025 | Swedish | 47 years |
| Tracey Denise Anderson | Director | 28 Jul 2021 | 1 Dec 2023 | British | 51 years |
| Victoria Louise De Temple | Director | 13 Nov 2017 | 1 May 2018 | British | 48 years |
| Vincent John Jerrard | Director | 7 Dec 2001 | 24 Jul 2003 | British | 71 years |
| Vyvyan James Attwood | Director | 16 Feb 1995 | 2 Dec 1996 | British | 77 years |