| Andrew Dickinson | Secretary | 12 Oct 2007 | 13 Jul 2010 | British | - |
| Andrew John Oakley | Director | 1 Jan 2015 | 10 Jun 2016 | Australian | 63 years |
| Anne Philomena Hyland | Director | 11 Nov 2010 | 1 Jul 2013 | Irish | 65 years |
| Anthony David Dayan | Director | 1 Mar 1998 | 12 May 2005 | British | 90 years |
| Christopher Paul Blackwell | Director | 11 Nov 2010 | 1 Jul 2015 | British | 64 years |
| Colin Bertram Brown | Director | 15 Dec 1997 | 10 Oct 2002 | British | 83 years |
| Colin Clive Dalton | Director | 14 Jul 2005 | 5 Jul 2011 | British | 75 years |
| David Smith | Secretary | 31 Jan 1994 | 9 May 2005 | British | - |
| Donald Selwyn Davies | Director | 22 Mar 1991 | 12 May 2005 | British | 85 years |
| Elizabeth Teresa Knowles | Director | 31 Mar 2022 | 31 Jul 2023 | British | 41 years |
| Frederick Stanislaus Hallsworth | Director | 6 Apr 2005 | 17 Jan 2007 | British | 72 years |
| Geoffrey Peter Fothergill | Director | 6 Jan 1997 | 13 Jun 2002 | British | 80 years |
| Ian Fletcher Kent | Director | 2 Mar 2005 | 17 Jan 2007 | British | 81 years |
| James Alexander Ward-lilley | Director | 1 Oct 2015 | 30 Jun 2019 | British | 60 years |
| John Fromson | Director | 16 May 2005 | 17 Jan 2007 | British | 84 years |
| John Murphy | Secretary | 13 Sept 2016 | 30 Jun 2025 | - | - |
| John Murphy | Director | 31 Jul 2018 | 5 Feb 2020 | British | 72 years |
| John Murphy | Director | 31 Mar 2022 | 30 Jun 2025 | British | 72 years |
| Kevin Ronald Leech | Director | 22 Mar 1991 | 10 Oct 2002 | British | 82 years |
| Kieran Pius Murphy | Director | 2 Mar 2005 | 17 Jan 2007 | Irish | 62 years |
| Lee Fraser Coleman | Secretary | 17 Jan 2007 | 12 Oct 2007 | British | - |
| Mark Glyn Hardy | Secretary | 22 Mar 1991 | 31 Jan 1994 | British | - |
| Mehul Andrew Derodra | Director | 10 Jun 2016 | 31 Jul 2018 | British | 59 years |
| Paul Andrew Fry | Director | 30 Jun 2019 | 31 Mar 2022 | British | 59 years |
| Paul Jonathan Ballington | Director | 29 Jun 2004 | 14 Jul 2005 | British | 71 years |
| Paul Stephen Oliver | Director | 1 Jul 2013 | 1 Jan 2015 | British | 47 years |
| Peter Frederick Burrell | Secretary | 13 Jul 2010 | 1 Jan 2015 | British | - |
| Peter John Shennan | Director | 30 Nov 1997 | 17 Jan 2007 | British | 75 years |
| Peter John Shennan | Secretary | 9 May 2005 | 17 Jan 2007 | British | - |
| Rajan Uppal | Director | 14 Jul 2005 | 17 Jan 2007 | British | 63 years |
| Robert Nichol Boyes | Director | 31 Mar 1993 | 12 May 2005 | Canadian | 84 years |
| Stuart William Sim | Director | 22 Mar 1991 | 2 Mar 2005 | British | 74 years |
| Susan Elizabeth Foden | Director | 12 May 2005 | 17 Jan 2007 | British | 72 years |
| Terence Stanley Chadwick | Director | 14 Jul 2005 | 17 Jan 2007 | British | 75 years |
| Till Medinger | Director | 1 Mar 1999 | 12 May 2005 | German | 85 years |
| Trevor Michael Phillips | Director | 1 Jul 2015 | 31 May 2017 | British | 64 years |
| William Downie | Director | 5 Feb 2020 | 31 Mar 2022 | British | 58 years |