| Alan Alexander Seywright | Director | 18 Feb 2016 | 22 Jun 2017 | British | 67 years |
| Allyn Byram Taylor | Director | 15 Oct 2010 | 7 Jun 2011 | American | 78 years |
| Claire Alwyn Marguerite Vaughan | Director | 27 Jun 1991 | 15 Oct 2010 | British | 69 years |
| Claire Alwyn Marguerite Vaughan | Secretary | 27 Jun 1991 | 15 Oct 2010 | British | - |
| David Baird | Director | 15 Dec 2010 | 22 Jan 2016 | British | 71 years |
| Eugene Peter Morgan | Director | 2 Dec 2005 | 15 Dec 2006 | British | 61 years |
| Graham Roger Jones | Director | 15 Oct 2010 | 1 Jan 2012 | British | 78 years |
| John Conor Doyle | Director | 18 Oct 2013 | 7 Oct 2016 | Irish | 67 years |
| John Wardman Schofield | Director | 14 Jan 1996 | 31 May 1999 | British | 82 years |
| John Warren Prosser | Director | 15 Oct 2010 | 8 Jan 2015 | American | 81 years |
| Kevin Christopher Berryman | Director | 13 Jan 2015 | 26 Apr 2017 | American | 67 years |
| Mark Louis Jarrett | Director | 1 Jul 2000 | 15 Oct 2010 | British | 62 years |
| Michael Timothy Norris | Secretary | 15 Oct 2010 | 23 May 2018 | - | - |
| Michael Udovic | Secretary | 15 Oct 2010 | 1 Sept 2015 | - | - |
| Michael William Fleetwood | Director | 15 Oct 2010 | 25 Sept 2014 | British | 69 years |
| Nigel Anthony Vaughan | Director | 27 Jun 1991 | 15 Oct 2010 | British | 72 years |
| Robert Anthony Michael Irvin | Director | 7 Jun 2011 | 7 Jun 2011 | British | 68 years |
| Robert Anthony Michael Irvin | Director | 7 Jun 2011 | 18 Oct 2013 | British | 68 years |
| Roger David Hays | Director | 1 Feb 1997 | 2 Dec 2005 | British | 84 years |
| Stephen Richard Scull | Director | 5 Dec 2005 | 15 Oct 2010 | British | 70 years |