| Aubrey John Adams | Director | N/A | 7 May 2008 | British | 76 years |
| Borja Sierra | Director | 1 Jan 2011 | 20 Mar 2015 | Spanish | 56 years |
| Charles Ian James Sanderson | Director | N/A | 22 Feb 1993 | British | 74 years |
| Christina Elspeth Hildrey | Secretary | 6 Nov 1997 | 1 Jul 2001 | British | - |
| Clare Jacqueline Latham | Secretary | N/A | 6 Nov 1997 | British | - |
| Craig Antony Watson | Director | 2 Nov 2009 | 20 Mar 2015 | British | 63 years |
| Craig Antony Watson | Director | 20 Mar 2015 | 31 Mar 2021 | British | 63 years |
| Gilbert Pierre Dessallien | Director | N/A | 22 Feb 1993 | French | 84 years |
| James Simon Ward Sparrow | Director | 1 Nov 2018 | 16 Sept 2024 | British | 58 years |
| Jeremy Charles Helsby | Director | 31 Dec 2000 | 2 Nov 2009 | British | 70 years |
| Jeremy Charles Helsby | Director | N/A | 22 Feb 1993 | British | 70 years |
| John Jeremy Mark Ridley | Director | 20 Mar 2015 | 1 Nov 2018 | British | 63 years |
| Juliette Natasha Stacey | Director | 7 May 2008 | 31 Dec 2010 | British | 55 years |
| Justin Anthony Crofts Roberts | Director | 15 Feb 2000 | 31 Dec 2000 | British | 78 years |
| Justin Marking | Director | N/A | 22 Feb 1993 | British | 67 years |
| Michael Peters | Director | 31 Mar 2021 | 25 Jul 2023 | British | 52 years |
| Michaela Frances East | Secretary | 14 Jul 2008 | 12 Sept 2012 | British | - |
| Nicholas Charles Gordon Lennox | Director | N/A | 14 Aug 1992 | British | 94 years |
| Robert Lewis Dean | Director | N/A | 15 Feb 2000 | British | 85 years |
| Ruth Tessa Michelson-carr | Secretary | 9 May 2003 | 14 Jul 2008 | British | - |
| Tina Lynne Cutler | Secretary | 1 Jul 2001 | 24 Feb 2004 | British | - |
