| Allard Reinar Van Der Veen | Director | 2 Aug 2011 | 1 Sept 2013 | Dutch | 52 years |
| Bryan Donald Needham | Director | 6 Mar 2008 | 23 Apr 2010 | British | 83 years |
| Claudia Ann Wallace | Director | 8 Jun 2018 | 20 Jul 2018 | British | 51 years |
| Daniel Marc Richard Jaffe | Director | 1 Sept 2013 | 10 Jul 2015 | British | 50 years |
| Darren Peter Gallant | Director | 4 Feb 2022 | 25 Apr 2024 | Canadian | 57 years |
| Dirk Peter Stolp | Director | 14 Jan 2012 | 1 Sept 2013 | Dutch | 66 years |
| Howard Neil Redgwell | Director | 1 Dec 2019 | 4 Feb 2022 | British | 69 years |
| Ian Gordon Stewart | Director | 11 Aug 2021 | 10 Sept 2024 | British | 65 years |
| James Patrick Johnston Fairrie | Director | 30 Nov 2007 | 2 Jul 2012 | British | 78 years |
| Maurice Alexander Kalsbeek | Director | 10 Jul 2015 | 8 Jun 2018 | Dutch | 48 years |
| Neil David Townson | Director | 8 Jun 2018 | 31 Aug 2018 | British | 65 years |
| Oliver Robert Julian Parr | Director | 1 Dec 2019 | 11 Aug 2021 | British | 73 years |
| Paivi Helena Whitaker | Director | 8 Jun 2018 | 1 Dec 2019 | Finnish | 62 years |
| Paul Francis Winship | Director | 30 Nov 2007 | 2 Aug 2011 | British | 61 years |
| Paul Francis Winship | Secretary | 30 Nov 2007 | 2 Aug 2011 | British | - |
| Richard Austin Stevens | Director | 1 Dec 2019 | 4 Feb 2022 | British | 70 years |
| Robin Gregory Baker | Director | 6 Mar 2008 | 30 Sept 2010 | British | 74 years |
| Susan Iris Abrahams | Director | 8 Jun 2018 | 1 Dec 2019 | British | 68 years |
