| Brendan Dominick Reville | Director | 13 Jun 2005 | 12 Feb 2008 | British | 64 years |
| Chandrasekhar Ramamurthy | Director | 13 Mar 2014 | 1 Jul 2021 | British | 70 years |
| Charles Richard Browne Goldson | Director | 5 Aug 2009 | 31 Dec 2015 | British | 77 years |
| Christine Susan Kernoghan | Director | 1 Jan 2021 | 6 Jul 2022 | British | 68 years |
| Christopher John Hitchen | Director | 10 Sept 2002 | 31 Dec 2017 | British | 61 years |
| Christopher Thomas Hannon | Director | 1 Jan 2016 | 1 Jan 2021 | British | 66 years |
| Cyril Francis Johnson | Director | 1 Oct 2004 | 3 Jul 2015 | British | 68 years |
| David Edward Gott | Director | 4 Aug 2017 | 4 Aug 2020 | British | 67 years |
| David Harry Adams | Director | 23 Nov 1993 | 5 Apr 1997 | British | 87 years |
| David Maddison | Director | 10 Feb 1997 | 30 Jun 2019 | British | 62 years |
| David Maddison | Secretary | 15 Apr 1994 | 5 Feb 2008 | British | - |
| David Matthew Teasdale | Director | 13 Jun 2012 | 30 Apr 2015 | British | 63 years |
| David Tyson | Director | 5 Aug 2009 | 4 Aug 2017 | British | 62 years |
| Gary Thomas Towse | Director | 5 Aug 2009 | 1 Jun 2020 | British | 74 years |
| Gerard Doherty | Director | 1 Aug 2020 | 1 Aug 2023 | British | 73 years |
| James Alexander Mckinnell | Director | 1 Oct 1994 | 17 May 2003 | British | 85 years |
| Jenifer Anne Goodchild | Secretary | 10 Oct 2013 | 8 May 2014 | - | - |
| John Anthony Horton | Director | 14 May 1991 | 23 Nov 1993 | British | 83 years |
| John Connor Hamilton | Director | 1 Jun 2014 | 31 Dec 2016 | British | 59 years |
| John David Chilman | Director | 5 Aug 2009 | 1 Jun 2014 | British | 59 years |
| John David Chilman | Director | 10 Jun 2019 | 7 Oct 2024 | British | 59 years |
| Julian Christopher Cripps | Director | 1 Jan 2017 | 30 Jun 2019 | British | 62 years |
| Lisa Melanie Sunner | Secretary | 8 May 2014 | 26 May 2022 | - | - |
| Malcolm James Gray | Director | 23 Nov 1993 | 1 Oct 2004 | British | 82 years |
| Maura Sullivan | Director | 1 Apr 2022 | 31 Dec 2023 | British | 60 years |
| Maura Sullivan | Director | 14 Mar 2024 | 31 Jul 2024 | British | 60 years |
| Michael Goy | Director | 23 Nov 1993 | 7 Oct 2008 | British | 74 years |
| Michelle Anne Ostermann | Director | 4 Sept 2019 | 1 Jan 2021 | Canadian | 57 years |
| Paul Andrew Sturgess | Director | 1 Jan 2018 | 1 Jul 2021 | British | 65 years |
| Peter Anthony Murray | Director | 13 May 1997 | 19 May 2004 | British | 84 years |
| Peter James Holden | Director | 1 Aug 2020 | 1 Jul 2021 | British | 61 years |
| Philip Craig Willcock | Director | 1 Feb 2018 | 28 Feb 2019 | British | 55 years |
| Ralph Anthony Porter | Nominee Director | 14 May 1991 | 23 Nov 1993 | British | 95 years |
| Richard Edward Jones | Director | 1 Jan 2017 | 31 Dec 2023 | British | 60 years |
| Robert John Branagh | Director | 6 Oct 2009 | 13 Apr 2013 | British | 62 years |
| Simon Paul Richards | Director | 1 Jul 2015 | 31 Dec 2016 | British | 63 years |
| Stephen Charles Kairis | Director | 20 Jul 2004 | 17 Apr 2009 | British | 76 years |
| Stuart Blackett | Director | 4 Sept 2019 | 8 Jan 2024 | British | 51 years |
| Susan Adeane | Director | 15 Apr 1994 | 4 Aug 2009 | British | 67 years |
| Susan Buddin | Secretary | 23 Nov 1993 | 15 Apr 1994 | British | - |
| Susan Fairclough | Secretary | 5 Feb 2008 | 3 May 2012 | British | - |
| Thomas Michael Twomey | Secretary | 14 May 1991 | 23 Nov 1993 | British | - |
| Veronica Warner | Secretary | 3 May 2012 | 31 Aug 2013 | - | - |
