| Adrian Charles Noel Kemp | Secretary | 1 Jan 2009 | 1 May 2025 | British | - |
| Ake Bo Stavling | Director | 5 Apr 1999 | 31 Jan 2003 | Swedish | 80 years |
| Alan Ind Harvey Pink | Director | 24 Feb 1993 | 5 Apr 1999 | British | 87 years |
| Amos Henry Chilver | Director | 24 Feb 1993 | 12 May 1995 | British | 99 years |
| Andreas Rummelt | Director | 1 Aug 2021 | 11 Apr 2025 | German | 69 years |
| Ann Cairns | Director | 24 Apr 2014 | 27 Apr 2017 | British | 68 years |
| Anthony Thomas George Rodgers | Director | 15 Feb 1993 | 30 Sept 1995 | British | 85 years |
| Bo Anders Angelin | Director | 25 Jul 2007 | 29 Apr 2010 | Swedish | 76 years |
| Bridget Margaret Ogilvie | Director | 1 Jan 1997 | 27 Apr 2006 | British | 87 years |
| Christopher Jeremy Morse | Director | 24 Feb 1993 | 5 Apr 1999 | British | 97 years |
| Claes Erik Wilhelmsson | Director | 5 Apr 1999 | 30 Jun 2002 | Swedish | 86 years |
| Cornelia Isabella Bargmann | Director | 24 Apr 2015 | 1 Oct 2016 | American | 64 years |
| David Richard Brennan | Director | 14 Mar 2005 | 1 Jun 2012 | American | 72 years |
| Deborah Disanzo Eldracher | Director | 1 Dec 2017 | 11 Apr 2025 | American | 65 years |
| Dennis Alan Chatterway | Nominee Secretary | 17 Jun 1992 | 17 Jun 1993 | British | - |
| Denys Hartley Henderson | Director | 15 Feb 1993 | 12 May 1995 | British | 93 years |
| Donald Bruce Burlington | Director | 1 Aug 2010 | 31 Aug 2017 | American | 77 years |
| Erna Birgitta Irmgard Moller | Director | 5 Apr 1999 | 26 Apr 2007 | Swedish | 85 years |
| Francois Louis Virginie Meysman | Director | 1 Nov 1996 | 5 Apr 1999 | Belgian | 73 years |
| Genevieve Bernadette Berger | Director | 26 Apr 2012 | 11 May 2021 | Swiss | 70 years |
| Gillian Margaret Lewis | Director | 24 Feb 1993 | 10 May 1996 | British | 81 years |
| Graeme Harold Rankine Musker | Secretary | 15 Feb 1993 | 31 Dec 2008 | British | - |
| Graham Chipchase | Director | 26 Apr 2012 | 11 May 2021 | British | 62 years |
| Hackwood Service Company | Corporate Nominee Director | 17 Jun 1992 | 17 Jun 1993 | - | - |
| Hakan Lars Mogren | Director | 5 Apr 1999 | 30 Apr 2009 | Swedish | 81 years |
| James David Francis Barnes | Director | 15 Feb 1993 | 26 Apr 2001 | British | 89 years |
| Jane Ellen Henney | Director | 24 Sept 2001 | 28 Apr 2011 | Usa | 78 years |
| Jean-philippe Courtois | Director | 18 Feb 2008 | 1 Dec 2016 | French | 65 years |
| John Charles Mayo | Director | 15 Feb 1993 | 1 Oct 1997 | British | 69 years |
| John Gordon Sinclair Buchanan | Director | 25 Apr 2002 | 29 Apr 2010 | British | 82 years |
| John Simon Patterson | Director | 1 Jan 2005 | 31 Mar 2009 | British | 77 years |
| John Varley | Director | 26 Jul 2006 | 24 Apr 2015 | British | 69 years |
| Jonathan Richard Symonds | Director | 1 Oct 1997 | 31 Jul 2007 | British | 66 years |
| Joseph Jimenez | Director | 1 Jul 2003 | 12 Apr 2007 | Spanish | 66 years |
| Karl Mueller Von Der Heyden | Director | 1 Oct 1998 | 29 Apr 2004 | German | 89 years |
| Lars Henry Ramquist | Director | 5 Apr 1999 | 25 Apr 2002 | Swedish | 87 years |
| Leif Valdemar Johansson | Director | 26 Apr 2012 | 27 Apr 2023 | Swedish | 74 years |
| Louis Pierre Jean Schweitzer | Director | 11 Mar 2004 | 1 Jun 2012 | French | 83 years |
| Marc Pierre Jean Dunoyer | Director | 1 Nov 2013 | 1 Aug 2021 | French | 73 years |
| Michael Patrick Pragnell | Director | 1 Jan 1997 | 13 Nov 2000 | British | 79 years |
| Michele Hooper | Director | 1 Jul 2003 | 26 Apr 2012 | American | 74 years |
| Nancy Jane Rothwell | Director | 27 Apr 2006 | 24 Apr 2015 | British | 70 years |
| Percy Barnevik | Director | 5 Apr 1999 | 31 Dec 2004 | Swedish | 84 years |
| Peter Doyle | Director | 15 Feb 1993 | 5 Apr 1999 | British | 87 years |
| Peter Leahy Bonfield | Director | 1 Jan 1995 | 26 Apr 2007 | British | 81 years |
| Richard Greenbury | Director | 24 Feb 1993 | 5 Apr 1999 | British | 89 years |
| Rudolph Harold Peter Markham | Director | 12 Sept 2008 | 26 Apr 2019 | British | 79 years |
| Shriti Vadera | Director | 1 Jan 2011 | 31 Dec 2018 | British | 63 years |
| Simon Jonathan Lowth | Director | 5 Nov 2007 | 31 Oct 2013 | British | 64 years |
| Sydney Lipworth | Director | 1 Oct 1994 | 5 Apr 1999 | British | 94 years |
| Thomas Fulton Wilson Mckillop | Director | 1 Jan 1996 | 31 Dec 2005 | British | 82 years |
| Thomas Hunt Wyman | Director | 24 Feb 1993 | 22 May 1998 | American | 96 years |