| Alexander David Baldock | Director | 23 Oct 2008 | 31 Aug 2012 | British | 55 years |
| Amy Louise Noble | Director | 25 Sept 2024 | 25 Jul 2025 | British | 36 years |
| Andrew David Barnard | Director | 31 May 2010 | 31 May 2013 | British | 54 years |
| Andrew Paul Gadsby | Director | 31 May 2013 | 11 May 2015 | British | 59 years |
| Christopher George Knowles | Director | 1 Aug 2001 | 29 Feb 2004 | British | 68 years |
| Christopher Paul Sullivan | Director | 1 Aug 2001 | 29 Feb 2004 | British | 68 years |
| David John Burgess | Director | 20 Apr 1999 | 7 Oct 2004 | British | 76 years |
| Derek John Lewis | Secretary | 10 Apr 1967 | 27 Nov 2006 | - | - |
| Emma Dignam | Secretary | 23 Oct 2008 | 5 Nov 2013 | - | - |
| Gerald Jennings Simms | Director | 10 Apr 1967 | 1 Apr 2002 | British | 82 years |
| Gillian Wraith Carter | Secretary | 27 Nov 2006 | 23 Oct 2008 | - | - |
| Graham Colin Clemett | Director | 2 Sept 2002 | 1 Jun 2007 | British | 65 years |
| Ian John Isaac | Director | 27 Feb 2015 | 30 Sept 2024 | British | 62 years |
| James Connellan | Director | 28 Feb 2007 | 30 Dec 2013 | - | 65 years |
| James Johnson Conn | Director | 20 Apr 1999 | 19 Sept 2006 | British | 74 years |
| John David Stuart | Director | 2 Mar 2004 | 9 Feb 2007 | British | 62 years |
| John Hamer Wood | Director | 28 Jun 2016 | 30 Jun 2017 | British | 63 years |
| John Joseph Mcnally | Director | 10 Apr 1967 | 31 Dec 2001 | Irish | 78 years |
| Joseph Alexander Pattara | Director | 11 Oct 2018 | 30 Dec 2021 | British | 52 years |
| Neeraj Kapur | Director | 1 Jun 2007 | 1 Feb 2010 | British | 60 years |
| Nigel Pearce | Director | 1 Aug 2001 | 23 Jun 2003 | British | 74 years |
| Nigel Timothy John Clibbens | Director | 12 Aug 2003 | 27 Feb 2015 | British | 66 years |
| Paul Anthony Lynam | Director | 1 Nov 2004 | 23 Oct 2008 | Irish | 57 years |
| Paul Marrow | Director | 2 Mar 2004 | 31 Oct 2004 | British | 73 years |
| Paul Stephen Mccarthy | Director | 3 Feb 2014 | 30 Dec 2021 | Irish | 59 years |
| Peter Moffat | Director | 30 Dec 2021 | 30 Sept 2024 | British | 47 years |
| Rachel Elizabeth Fletcher | Secretary | 23 Oct 2008 | 27 Apr 2012 | - | - |
| Richard Aidan Hugh Boucher | Director | 7 Sept 2000 | 15 Jan 2002 | Irish | 67 years |
| Robert Bailie | Director | 10 Apr 1967 | 20 Apr 1999 | Irish | 81 years |
| Robert Duncan Brodie | Director | 1 Aug 2001 | 2 Mar 2004 | British | 60 years |
| Robert John Mckay | Director | 10 Apr 1967 | 20 Oct 1999 | Irish | 76 years |
| Trevor Douglas Crome | Director | 27 Feb 2015 | 28 Jun 2016 | British | 65 years |
| William Bernard Kingston | Director | 20 Oct 1999 | 13 Nov 2001 | Irish | 69 years |