| Alastair David Lyons | Director | 24 Jan 2011 | 30 Sept 2013 | British | 72 years |
| Alastair William Stewart Barbour | Director | 17 Oct 2013 | 31 Jan 2018 | British | 72 years |
| Anthony Beverley Davidson | Director | 27 Aug 2009 | 25 Sept 2009 | British | 78 years |
| Anthony Beverley Davidson | Director | 27 Aug 2009 | 15 Jan 2011 | British | 78 years |
| Clive Christopher Roger Bannister | Director | 16 Mar 2011 | 10 Mar 2020 | British | 67 years |
| David Ernest Woods | Director | 24 Jan 2011 | 11 May 2017 | British | 78 years |
| David Kenneth Barnes | Director | 27 Aug 2009 | 22 Oct 2014 | British | 71 years |
| Duncan George Robin Ferguson | Director | 27 Aug 2009 | 25 Sept 2009 | British | 83 years |
| Edward Jonathan Cameron Hawkes | Director | 27 Aug 2009 | 21 Aug 2013 | British | 48 years |
| Gerald Alistair Watson | Secretary | 30 Jul 2009 | 27 Feb 2019 | British | - |
| Ian Donald Cormack | Director | 27 Aug 2009 | 31 Dec 2016 | British | 78 years |
| James Mcconville | Director | 16 Aug 2012 | 15 May 2020 | British | 69 years |
| John Brackenridge Pollock | Director | 1 Jan 2017 | 31 Jan 2018 | British | 67 years |
| John Simon Bertie Smith | Director | 30 Jul 2009 | 30 Jun 2010 | British | 61 years |
| Jonathan James Yates | Director | 10 Sept 2010 | 21 Dec 2011 | British | 64 years |
| Jonathan Peter Evans | Director | 27 Aug 2009 | 1 Jan 2011 | British | 75 years |
| Jonathan Stephen Moss | Director | 27 Aug 2009 | 7 Feb 2011 | British | 62 years |
| Michael David Ross | Director | 27 Aug 2009 | 10 Jan 2011 | British | 79 years |
| Michael John Eaton | Director | 30 Jul 2009 | 28 Sept 2009 | British | 64 years |
| Michael John Merrick | Director | 27 Aug 2009 | 13 Jan 2011 | British | 65 years |
| Rakesh Kishore Thakrar | Director | 31 Jan 2018 | 30 Jun 2024 | British | 50 years |
| Tom Cross Brown | Director | 27 Aug 2009 | 11 May 2016 | English | 78 years |
| Wendy Madeleine Mayall | Director | 10 May 2017 | 31 Jan 2018 | British | 68 years |
| William Raymond Treen | Director | 27 Aug 2009 | 23 Jan 2011 | Welsh | 85 years |