| Alan Robert Robertson | Director | 1 Sept 2008 | 31 Dec 2023 | British | 64 years |
| Alison Taylor West | Secretary | 4 May 2010 | 31 Jul 2014 | British | - |
| Alistair Gordon Thompson | Director | 25 Aug 2022 | 9 Apr 2024 | British | 68 years |
| Andries Johannes De Jong | Director | 17 May 2004 | 31 Dec 2008 | Dutch | 76 years |
| Derek Waller | Secretary | 28 May 1991 | 4 May 2010 | British | - |
| Horace William Alexander Francis | Director | 28 May 1992 | 30 Jun 1992 | British | 100 years |
| James Elders | Director | 17 May 2004 | 31 Aug 2008 | British | 76 years |
| Leon Antonius Maria Verweij | Director | 17 May 2004 | 18 May 2009 | Dutch | 66 years |
| Michael James Weaver | Director | 8 Mar 2011 | 11 Sept 2023 | British | 64 years |
| Naomi Anne Connell | Director | 11 Jan 2010 | 16 Jul 2023 | British | 61 years |
| Patrick Alan Fitzpatrick | Director | 28 May 1992 | 17 May 2004 | British | 99 years |
| Penelope Helene May Fitzpatrick | Director | 28 May 1991 | 17 May 2004 | French | 67 years |
| Peter Anthony Hyde | Director | 8 Mar 2011 | 30 Oct 2015 | British | 61 years |
| Steven John Fitzpatrick | Director | 28 May 1991 | 27 Sept 1994 | British | 66 years |