| Aileen Norma Taylor | Secretary | 28 Jul 2017 | 5 Aug 2019 | - | - |
| Alan Raymond Gillespie Cbe | Director | 1 Jun 2001 | 4 Sept 2008 | British | 75 years |
| Alexander Maxwell Crombie | Director | 28 Jul 2017 | 1 Jan 2018 | British | 76 years |
| Alison Davis | Director | 28 Jul 2017 | 31 Mar 2020 | American | 64 years |
| Alison Marie Rose-slade | Director | 3 Dec 2018 | 27 Apr 2023 | British | 56 years |
| Andrew Martin Mclaughlin | Director | 19 Oct 2010 | 19 Apr 2014 | British | 57 years |
| Bernard Philip Horn | Director | 1 Nov 1999 | 14 Mar 2000 | British | 79 years |
| Brendan Robert Nelson | Director | 28 Jul 2017 | 31 Dec 2018 | British | 76 years |
| Bridget Clare Rosewell | Director | 21 Nov 2011 | 30 Jun 2016 | British | 74 years |
| Charles Ashley Mcmanus | Director | 28 Mar 2011 | 17 Aug 2012 | British | 64 years |
| Christopher Gregory Michael Mills | Director | 28 Feb 2006 | 27 Feb 2016 | British | 78 years |
| Christopher Robert James Campbell | Director | 5 Jul 2010 | 28 Jul 2017 | British | 67 years |
| Cormac Michael Mccarthy | Director | 6 Jan 2004 | 8 Apr 2011 | Irish | 63 years |
| David Franklin Adair | Director | 1 Oct 1867 | 1 Apr 1999 | Irish | 81 years |
| David John Peacock | Secretary | 24 Dec 2008 | 30 Sept 2009 | British | - |
| David John Peacock | Secretary | 1 Oct 1867 | 27 Apr 2007 | - | - |
| Declan John O'neill | Director | 1 Mar 2002 | 30 Jun 2003 | Irish | 73 years |
| Des O'shea | Director | 12 Nov 2012 | 28 Jul 2017 | Irish | 69 years |
| Eileen Elizabeth Gleeson | Director | 1 Apr 2004 | 28 Feb 2013 | Irish | 65 years |
| Ellvena Graham | Director | 18 Feb 2016 | 30 Jun 2017 | British | 62 years |
| Ewen James Stevenson | Director | 28 Jul 2017 | 30 Sept 2018 | British | 59 years |
| Francesca Barnes | Director | 1 May 2018 | 29 Jul 2021 | British | 67 years |
| Franck Emmanuel Dangeard | Director | 28 Jul 2017 | 30 Apr 2018 | French | 67 years |
| Frederick Anderson Sir. Goodwin | Director | 26 Jun 2000 | 5 Dec 2007 | British | 67 years |
| George Ross Mathewson | Director | 26 Jun 2000 | 1 Jun 2001 | British | 85 years |
| Gordon Francis Pell | Director | 30 Jun 2009 | 1 Apr 2010 | British | 75 years |
| Graham John Beale | Director | 1 May 2018 | 29 Jul 2021 | British | 67 years |
| Hamish Martin Vincent Gray | Director | 1 Oct 1867 | 31 Oct 1999 | British | 79 years |
| Howard John Davies | Director | 28 Jul 2017 | 28 Apr 2023 | British | 74 years |
| Ian Donald Cormack | Director | 1 May 2018 | 29 Jul 2021 | British | 78 years |
| Ian William Larmor Webb | Director | 13 Feb 2006 | 28 Feb 2013 | British | 78 years |
| Ivan James Laird | Director | 1 Oct 1867 | 19 Dec 2002 | British | 81 years |
| James Alexander Brown | Director | 11 Apr 2011 | 31 Aug 2015 | New Zealander | 65 years |
| Jan Cargill | Secretary | 5 Aug 2019 | 12 May 2023 | - | - |
| John Edward Hughes | Director | 28 Jul 2017 | 1 Sept 2017 | British | 61 years |
| John Joseph Mcnally | Director | 1 Oct 1867 | 5 Sept 2005 | Irish | 78 years |
| Judith Lucy Collister | Secretary | 27 Apr 2007 | 11 Feb 2010 | - | - |
| Katie Murray | Director | 1 Jan 2019 | 27 Apr 2023 | British | 56 years |
| Lady. Brenda Mary Mclaughlin Cbe | Director | 1 Jun 2001 | 7 Jun 2009 | British | 78 years |
| Lena Cooper Wilson | Director | 1 Jan 2018 | 29 Jul 2021 | British | 61 years |
| Leslie Durno Matheson | Director | 15 Oct 2015 | 28 Jul 2017 | British | 66 years |
| Lucille Columba Gaffney | Director | 17 May 2004 | 7 Jun 2007 | Irish | 65 years |
| Mark Donald Seligman | Director | 28 Jul 2017 | 29 Jul 2021 | British | 69 years |
| Martin Joseph Wilson | Director | 1 Oct 1867 | 31 Mar 2006 | Irish | 75 years |
| Martin Rafferty | Director | 1 Oct 1867 | 10 Apr 2003 | Irish | 92 years |
| Mary Concepta Mullen | Secretary | 5 Dec 2007 | 9 Dec 2010 | - | - |
| Michael Gerard Torpey | Director | 6 Jan 2004 | 4 Feb 2008 | Irish | 66 years |
| Michael John Bamber | Director | 20 Dec 2002 | 28 Feb 2011 | British | 64 years |
| Michael John Rogers | Director | 28 Jul 2017 | 29 Jul 2021 | British | 61 years |
| Michael Larkin | Director | 15 Oct 2015 | 28 Jul 2017 | Irish | 56 years |
| Miller Roy Mcclean | Director | 1 Jun 2001 | 1 Jun 2001 | British | 76 years |
| Miller Roy Mclean Ma Llb Np Fcibs | Director | 26 Jun 2000 | 11 Jun 2010 | British | 76 years |
| Morten Nicolai Friis | Director | 28 Jul 2017 | 29 Jul 2021 | Norwegian | 72 years |
| Niamh Brennan | Director | 1 Jun 2001 | 7 Jun 2009 | Irish | 71 years |
| Nigel Hamilton | Director | 17 Apr 2009 | 30 Sept 2016 | British | 77 years |
| Patrick Anthony Mccardle | Director | 26 Jun 2000 | 19 Dec 2002 | Irish | 77 years |
| Patrick Gerard Flynn | Director | 1 Jun 2018 | 29 Jul 2021 | Irish | 65 years |
| Patrick Mcmahon | Director | 1 Oct 1867 | 31 Jan 2002 | Irish | 83 years |
| Paul Gerard Stanley | Director | 6 Aug 2013 | 15 Oct 2015 | Irish | 62 years |
| Paul Richard Biddle | Director | 27 Jan 1999 | 31 Oct 1999 | British | 80 years |
| Penelope Lesley Hughes | Director | 28 Jul 2017 | 30 May 2018 | British | 66 years |
| Peter Gerard Malone | Director | 1 Jun 2001 | 29 Nov 2005 | Irish | 81 years |
| Peter Halliday Mckie | Director | 1 Oct 1867 | 14 Apr 2005 | British | 90 years |
| Philip Michael Gerard Nolan | Director | 16 Mar 2006 | 15 Oct 2015 | British | 72 years |
| Rachel Curran | Secretary | 24 Dec 2008 | 1 Jul 2013 | - | - |
| Richard David Houghton | Director | 20 Dec 2002 | 17 May 2004 | British | 60 years |
| Robert Andrew Joseph Gillespie | Director | 28 Jul 2017 | 29 Jul 2021 | British | 70 years |
| Robert Kevin Bergin | Secretary | 30 Mar 2009 | 31 Jan 2016 | Irish | - |
| Robert Michael Gallagher | Director | 5 Sept 2005 | 30 Sept 2011 | Irish | 64 years |
| Robert William Roy Mcnulty | Director | 1 Oct 1867 | 13 Apr 2000 | British | 88 years |
| Ronald David Kells | Director | 1 Oct 1867 | 30 Jun 2001 | British | 87 years |
| Rosemary Ellen Quinlan | Director | 3 Apr 2013 | 28 Jul 2017 | Irish | 56 years |
| Ross Maxwell Mcewan | Director | 28 Jul 2017 | 31 Oct 2019 | New Zealander | 68 years |
| Sean Dorgan | Director | 1 Jul 2008 | 21 Jun 2013 | Irish | 74 years |
| Senan Joseph Murphy | Director | 4 Feb 2008 | 28 Feb 2011 | Irish | 56 years |
| Sheila Valerie Noakes | Director | 28 Jul 2017 | 31 Jul 2020 | British | 79 years |
| Sheryl Anderson | Secretary | 26 Sept 2013 | 28 Jul 2017 | British | - |
| Stephen John Bell | Director | 23 Mar 2012 | 20 Aug 2015 | British | 61 years |
| Thomas Carlisle Reid | Director | 15 Feb 2001 | 31 Mar 2004 | Irish | 80 years |
| Trevor George William Bowen | Director | 1 Apr 2004 | 28 Feb 2013 | Irish | 76 years |
| William George Henry Quigley | Director | 1 Oct 1867 | 30 Jun 2001 | British | 96 years |
| William James Burgess | Director | 1 Jun 2001 | 8 Feb 2006 | Irish | 79 years |
| William Patrick O'kane | Director | 1 Oct 1867 | 30 Apr 2002 | British | 88 years |
| Yasmin Jetha | Director | 28 Jul 2017 | 29 Jul 2021 | British | 73 years |