| Adam George Waddington | Director | 29 Sept 2011 | 19 Apr 2013 | British | 52 years |
| Adrian Vincent Mole | Director | 1 Apr 2011 | 31 Jan 2013 | British | 59 years |
| Anne Catherine Ramsay | Secretary | 20 Dec 2007 | 3 Sept 2018 | Other | - |
| Anthony Peter Renwick | Director | 1 Sept 2015 | 31 Dec 2016 | British | 65 years |
| Benjamin Matthew Cashin | Director | 11 Jul 2008 | 11 Aug 2011 | British | 54 years |
| Colin Michael Exford | Director | 8 Apr 2010 | 11 Apr 2013 | British | 68 years |
| David Boyd Lindsay | Director | 20 Dec 2007 | 11 Jul 2008 | British | 67 years |
| David Graham Blanchard | Director | 29 May 2013 | 28 Jun 2013 | British | 59 years |
| Derek Vincent Coates | Director | 20 Feb 2008 | 31 Dec 2012 | British | 69 years |
| Elaine Louise Whiteley-todd | Director | 16 Jan 2018 | 16 Aug 2018 | British | 63 years |
| Gerard Eugene Hanson | Director | 7 Apr 2011 | 27 Sept 2012 | British | 71 years |
| Gerard Eugene Hanson | Director | 31 Dec 2016 | 17 Dec 2021 | British | 71 years |
| Gordon Russell Howard | Director | 27 Sept 2012 | 13 Sept 2017 | British | 58 years |
| Graham Farley | Director | 20 Dec 2007 | 29 Sept 2011 | British | 77 years |
| Helen Jane Watson | Director | 22 Apr 2008 | 31 Aug 2015 | British | 62 years |
| Jane Elizabeth Mackreth | Secretary | 20 Dec 2007 | 3 Sept 2018 | Other | - |
| John James Shiel | Director | 15 Jun 2020 | 28 Aug 2024 | British | 58 years |
| John Michael Pearce | Director | 11 Jul 2016 | 22 Feb 2018 | British | 55 years |
| John Neville Bridge | Director | 26 Sept 2013 | 31 Jul 2018 | British | 84 years |
| Karen Jayne Atkinson Davison | Director | 1 Sept 2015 | 31 Jan 2017 | British | 62 years |
| Kate Louise Flaherty | Director | 30 Mar 2015 | 20 Nov 2020 | British | 46 years |
| Kathleen Priestley | Director | 18 Jun 2008 | 30 May 2013 | British | 77 years |
| Keith David Lancaster | Director | 6 Jan 2009 | 26 Jun 2009 | British | 53 years |
| Keith Joseph Edwards | Director | 16 Jan 2018 | 19 Oct 2022 | British | 61 years |
| Keith Purvis | Director | 18 Sept 2014 | 8 Dec 2017 | British | 65 years |
| Keith Purvis | Director | 30 Jan 2018 | 15 Jun 2020 | British | 65 years |
| Lee James Mills | Director | 23 Nov 2007 | 20 Dec 2007 | British | 68 years |
| Luke Christopher Ashworth | Director | 23 Apr 2014 | 11 Jul 2014 | British | 44 years |
| Margaret Ruth Bonsall | Director | 25 Jan 2010 | 1 Jul 2011 | British | 70 years |
| Mark Jonathan Fowkes | Director | 20 Dec 2007 | 6 Jan 2009 | British | 56 years |
| Martin Edward Harrison | Director | 31 Dec 2012 | 8 Dec 2017 | British | 68 years |
| Martyn Andrew Trodd | Director | 29 Sept 2011 | 31 Dec 2017 | British | 59 years |
| Michael Alexander Barker | Director | 20 Dec 2007 | 20 Aug 2008 | British | 57 years |
| Michael Conlon | Director | 1 Sept 2015 | 11 Jul 2016 | British | 66 years |
| Michael Howell Dillon | Director | 20 Dec 2007 | 22 Apr 2008 | British | 74 years |
| Paul Simon Andrews | Director | 21 Jan 2015 | 31 Dec 2016 | British | 56 years |
| Peter Forsyth | Director | 20 Dec 2007 | 31 Jan 2013 | British | 67 years |
| Philip James Dixon | Director | 1 Jan 2017 | 22 Feb 2018 | British | 44 years |
| Richard Charles Turner | Director | 20 Dec 2007 | 10 Nov 2009 | British | 59 years |
| Richard Peter Airey | Director | 18 Sept 2014 | 22 Sept 2017 | British | 45 years |
| Robert Duncan Holt | Director | 20 Dec 2007 | 17 Oct 2017 | British | 60 years |
| Sinesh Ramesh Shah | Director | 28 Jun 2013 | 30 Mar 2015 | British | 49 years |
| Timothy Francis George | Director | 23 Nov 2007 | 20 Dec 2007 | British | 66 years |
| Timothy Francis George | Secretary | 23 Nov 2007 | 20 Dec 2007 | British | - |
| Timothy Richard Elliot | Director | 8 Apr 2010 | 14 Dec 2011 | British | 54 years |
| Trusha Pillay | Director | 26 Jun 2009 | 8 Apr 2010 | British | 54 years |
| William Iain Watson | Director | 6 Jan 2009 | 8 Apr 2010 | British | 57 years |