| Claire Tytherleigh Russell | Director | 31 Mar 2005 | 31 Mar 2006 | British | 61 years |
| David Charles Turner | Director | 10 Sept 2002 | 1 Feb 2006 | Other | 65 years |
| David Charles Turner | Secretary | 10 Sept 2002 | 1 Feb 2006 | Other | - |
| Dean Marlow Ashton | Director | 30 Oct 2015 | 1 Jul 2018 | British | 65 years |
| Francis Eamon Nelson | Director | 31 Mar 2006 | 30 Sept 2012 | British | 74 years |
| Geoffrey Arthur George Shepheard | Secretary | 23 Aug 2004 | 31 Mar 2006 | British | - |
| Graham Prothero | Director | 2 Apr 2019 | 3 Jan 2020 | British | 64 years |
| Kenneth Gillespie | Director | 30 Sept 2012 | 31 Jul 2016 | British | 60 years |
| Martin Cooper | Director | 30 Jun 2017 | 30 Jun 2019 | British | 54 years |
| Michael Laws | Director | 8 Dec 2014 | 31 Aug 2019 | British | 55 years |
| Michael Robert Le Lorrain | Director | 30 Sept 2012 | 30 Jun 2017 | British | 69 years |
| Neil David Cocker | Director | 30 Jun 2019 | 1 Apr 2025 | British | 59 years |
| Nicholas James Salt | Director | 4 Sept 2017 | 31 Jul 2019 | British | 55 years |
| Patrick Firth | Director | 15 Oct 2002 | 31 Mar 2006 | British | 70 years |
| Richard Barraclough | Director | 31 Mar 2006 | 29 Feb 2012 | British | 70 years |
| Richard Barraclough | Secretary | 31 Mar 2006 | 29 Feb 2012 | British | - |
| Roger Graham Sudbury | Director | 15 Oct 2002 | 31 Mar 2005 | British | 64 years |
| Seamus Joseph Gillen | Director | 10 Sept 2002 | 15 Oct 2002 | British | 66 years |
| Tom De La Motte | Director | 8 Dec 2014 | 30 Sept 2017 | British | 55 years |