| Alan Henry Clifton | Director | 1 Jan 1994 | 31 Dec 1998 | British | 80 years |
| Andrew John Moss | Director | 29 Jul 2004 | 30 May 2012 | British | 68 years |
| Anthony Blake Wyand | Director | 1 May 1992 | 31 Jul 2003 | British | 83 years |
| Anthony Louis Sidney Stacey Brend | Director | 1 May 1992 | 31 Dec 1993 | British-australian | 92 years |
| Anupam Sahay | Director | 29 Jun 2007 | 31 Dec 2009 | Indian | 57 years |
| Clifford James Abrahams | Director | 21 Dec 2011 | 1 May 2013 | British | 59 years |
| Cornelis Antonius Carolus Maria Schrauwers | Director | 1 Jul 1997 | 31 Dec 1998 | Dutch | 79 years |
| David Ezekiel | Director | 16 Dec 2013 | 29 Jun 2015 | British | 78 years |
| Derek John Wright | Director | 29 Jun 2015 | 30 Jun 2024 | British | 72 years |
| Diane Cote | Director | 10 Dec 2010 | 5 Dec 2011 | Canadian | 63 years |
| Hendrik Meij | Director | 1 May 1992 | 31 Dec 1993 | Dutch | 98 years |
| Ian Charles Strachan | Director | 1 May 1992 | 31 Dec 1993 | British,american | 83 years |
| Igal Mordeciah Mayer | Director | 29 Jun 2007 | 31 Dec 2009 | Israeli | 65 years |
| Igal Mordeciah Mayer | Director | 25 Feb 2011 | 27 Apr 2012 | Israeli | 65 years |
| James Stephen Rattray | Director | 1 Jan 1994 | 30 Jun 1998 | British | 86 years |
| Jason Michael Windsor | Director | 28 Oct 2014 | 31 Jul 2016 | British | 54 years |
| John Gordon Thomas Carter | Director | 1 May 1992 | 30 Jun 1998 | British | 89 years |
| John Robert Lister | Director | 29 May 2012 | 28 Oct 2014 | British | 68 years |
| Keith Nigel Grant | Director | 1 Jan 1994 | 30 Jun 1998 | British | 72 years |
| Keith Nigel Grant | Secretary | 1 May 1992 | 30 Jun 1998 | British | - |
| Kirstine Ann Cooper | Secretary | 8 Aug 2007 | 4 Sept 2014 | British | - |
| Mark Steven Hodges | Director | 29 Jun 2007 | 2 Jun 2011 | British | 61 years |
| Martin John Muir | Director | 21 Sept 2020 | 23 Nov 2022 | British | 59 years |
| Martin Wakefield Jacomb | Director | 1 May 1992 | 31 Dec 1993 | British | 97 years |
| Michael Barber | Director | 18 Jun 2013 | 30 Apr 2015 | British | 55 years |
| Michael Nicholas Biggs | Director | 31 Mar 2001 | 31 Dec 2003 | British | 74 years |
| Nicholas David Williams | Director | 19 Jun 2015 | 30 Jun 2024 | British | 71 years |
| Nicholas Hugo Baring | Director | 1 May 1992 | 31 Dec 1993 | British | 92 years |
| Otto Thoresen | Director | 27 Sept 2016 | 18 Sept 2025 | British | 70 years |
| Patrick Charles Regan | Director | 22 Mar 2010 | 27 Mar 2014 | British | 60 years |
| Patrick John Gillam | Director | 1 May 1992 | 31 Dec 1993 | British | 93 years |
| Patrick Joseph Robert Snowball | Director | 24 Apr 2001 | 3 May 2007 | British | 76 years |
| Paul Leonard Mylet | Director | 3 Mar 2017 | 30 Apr 2021 | British | 52 years |
| Peter Geoffrey Ward | Director | 1 Jan 1994 | 15 Jun 2000 | English | 84 years |
| Peter James Foster | Director | 1 Jan 1994 | 31 Mar 2001 | British | 80 years |
| Philip Gordon Scott | Director | 24 Apr 2001 | 26 Jan 2010 | British | 72 years |
| Philip Johnson Twyman | Director | 1 Jul 1998 | 31 Mar 2004 | Australian | 82 years |
| Richard Andrew Whitaker | Secretary | 1 Jul 1998 | 8 Aug 2007 | British | - |
| Richard English | Director | 20 Aug 2021 | 23 Oct 2023 | British | 47 years |
| Richard John Harvey | Director | 24 Apr 2001 | 29 Jun 2007 | British | 76 years |
| Robert Avisson Scott | Director | 1 Jul 1998 | 24 Apr 2001 | Australian | 84 years |
| Robert John Alford | Director | 16 Dec 2013 | 27 Sept 2016 | British | 76 years |
| Robert William Albert Howe | Director | 8 May 2014 | 29 Jul 2020 | British | 77 years |
| Robin Lloyd Spencer | Director | 25 Nov 2010 | 1 May 2013 | British | 56 years |
| Roger Jean Louis Fauroux | Director | 1 May 1992 | 31 Dec 1993 | French | 100 years |
| Ronald Claus Hampel | Director | 1 May 1992 | 31 Dec 1993 | British | 94 years |
| Roy Kemp | Director | 1 Jan 1994 | 31 Dec 1998 | British | 83 years |
| Thomas Dawson Stoddard | Director | 8 May 2014 | 30 Jun 2019 | American | 60 years |
| Tidjane Cheick Thiam | Director | 29 Jun 2007 | 28 Sept 2007 | French | 64 years |
| Timothy Walter Harris | Director | 21 Sept 2010 | 30 Mar 2012 | British | 57 years |
| Trevor John Matthews | Director | 2 Dec 2011 | 1 May 2013 | Australian | 74 years |