| Alain Robert Michel Marcetteau | Director | 1 Apr 2009 | 30 Sept 2016 | French | 75 years |
| Alan James Belfield | Director | 1 Apr 2014 | 31 Mar 2019 | British | 70 years |
| Anthony David William Broomhead | Director | 7 Jun 2005 | 3 Feb 2011 | British | 72 years |
| Anthony Frederick Lovell | Director | 6 May 2011 | 31 Oct 2025 | British | 58 years |
| Cecil Hugh Ignatius Balmond | Director | 27 Nov 1992 | 16 Oct 2008 | British | 83 years |
| Craig Gibbons | Director | 1 Mar 2007 | 20 Apr 2011 | British | 64 years |
| David Arthur Whittleton | Director | 1 Apr 2007 | 31 Mar 2017 | British | 75 years |
| David Terry Johnston | Director | 27 Nov 1992 | 1 Oct 1999 | British | 84 years |
| Dervilla Mary Mitchell | Director | 23 May 2017 | 31 Mar 2021 | Irish | 68 years |
| Geoffrey Nevil Hunt | Director | 1 Jun 2016 | 26 Jun 2025 | British | 65 years |
| Gurjit Jhuti Wood | Director | 7 Jun 2017 | 31 Mar 2022 | British | 58 years |
| Jerome Anthony Frost | Director | 1 Apr 2021 | 31 Mar 2022 | British | 55 years |
| Matthew Stuart Tweedie | Secretary | 1 Apr 2007 | 1 Nov 2015 | British | - |
| Michael John Somers | Secretary | 27 Nov 1992 | 31 Mar 2007 | British | - |
| Michael Shears | Director | 1 Oct 1999 | 31 Mar 2004 | British | 86 years |
| Neil Ian Robert Noble | Director | 1 Mar 2007 | 15 Jul 2010 | British | 77 years |
| Nigel Cooper Thompson | Director | 27 Nov 1992 | 18 Jun 1998 | British | 87 years |
| Philip Graham Dilley | Director | 7 Jun 2005 | 31 Mar 2014 | British | 71 years |
| Robert Frank Care | Director | 3 Feb 2011 | 31 Mar 2014 | Australian | 76 years |
| Terence Malcolm Hill | Director | 1 Apr 2004 | 28 Feb 2010 | British | 78 years |
| Vanessa Jane Shakespeare | Secretary | 2 Nov 2015 | 1 Jul 2022 | - | - |