| Abel Ludolf Rasterhoff | Director | 1 Apr 1994 | 1 Dec 1997 | Dutch | 86 years |
| Alexander Gibb Troup Tosh | Director | 22 Oct 1992 | 24 Feb 1994 | British | 89 years |
| Alison Ayodele Henwood | Director | 17 Feb 2017 | 20 Apr 2022 | British | 61 years |
| Andrew James Smith | Director | 25 Oct 2006 | 18 Dec 2009 | Australian | 62 years |
| Andrew Philip Roberts | Director | 15 Mar 2011 | 14 Dec 2012 | British | 70 years |
| Armand Jean Margrete Lumens | Director | 17 Feb 2014 | 6 Dec 2016 | Dutch | 58 years |
| Bernard Auplat | Director | 1 Sept 2004 | 25 Jul 2013 | French | 69 years |
| Bjorn Alexander Fermin | Director | 2 Oct 2012 | 28 Feb 2014 | Dutch | 64 years |
| Christopher David Vincent | Director | 22 Oct 1992 | 31 Mar 1994 | British | 85 years |
| Christopher David Vincent | Secretary | 22 Oct 1992 | 22 Oct 1994 | British | - |
| Cornelius Antonius Johannes Herkstroter | Director | 22 Oct 1992 | 30 Jun 1994 | Dutch | 89 years |
| David Leslie Smith | Director | 22 Oct 1992 | 31 Dec 1997 | British | 88 years |
| David Robert Varney | Director | 13 Feb 1996 | 22 May 1996 | British | 80 years |
| Fiona Katherine Grandison | Director | 27 Mar 2024 | 3 Apr 2024 | British | 54 years |
| Francis Doyle Duffield | Director | 22 Oct 1992 | 3 Dec 1992 | New Zealander | 78 years |
| Geoffrey David Swaine | Director | 1 Apr 1995 | 15 Feb 1996 | British | 90 years |
| Gordon John West | Secretary | 14 Jun 1994 | 22 Oct 1994 | British | - |
| Gordon John West | Secretary | 6 Sept 1995 | 6 Sept 1995 | British | - |
| Gordon John West | Secretary | 22 Oct 1995 | 1 Jan 1999 | British | - |
| Grahaeme Henderson | Director | 1 Feb 2012 | 24 May 2019 | British | 72 years |
| Harry Lyford Allan | Secretary | 1 Jan 1999 | 28 Feb 2011 | British | - |
| Horst Hermann Voelker | Director | 1 Jan 1994 | 31 Mar 1995 | German | 89 years |
| Ian Alexander Mcgrath | Director | 22 Oct 1992 | 31 Jan 1995 | British | 90 years |
| Jacek Jan Dziembaj | Director | 20 Jul 2018 | 31 Mar 2024 | Polish | 58 years |
| James Edward De Haseth | Director | 27 Nov 2000 | 3 Sept 2004 | Dutch | 81 years |
| Jan Marceli Kopernicki | Director | 11 Jul 1994 | 31 Mar 1995 | British | 78 years |
| Jan Marceli Kopernicki | Director | 1 Jan 1998 | 31 Mar 2011 | British | 78 years |
| Johannes Jacobus Slechte | Director | 1 Jan 1994 | 31 Mar 1995 | Durch | 89 years |
| John Southwood Jennings | Director | 1 Jul 1994 | 30 Jun 1996 | British | 89 years |
| John Stewart Mills | Director | 18 Dec 2009 | 13 Jun 2013 | British | 73 years |
| Juergen Durry | Director | 1 Jan 1994 | 31 Mar 1995 | German | 90 years |
| Jyoti Eruch Munsiff | Secretary | 1 Apr 1994 | 5 Sept 1995 | British | - |
| Karel Kooijman | Director | 13 Feb 1996 | 26 Feb 1999 | Dutch | 85 years |
| Kathy Lee Love | Secretary | 6 Sept 1995 | 22 Oct 1995 | British | - |
| Lane Everett Sloan | Director | 16 Feb 1996 | 25 Jun 1997 | American | 79 years |
| Mark Quartermain | Director | 3 Sept 2013 | 31 Jul 2021 | British | 65 years |
| Martin Charles Lawrence | Director | 18 May 2001 | 23 Feb 2003 | British | 68 years |
| Michael Francis Conway | Director | 10 Feb 2003 | 23 Jun 2017 | Us Citizen | 70 years |
| Michael Seymour Warwick | Director | 30 Jun 1997 | 30 Sept 2006 | British | 80 years |
| Michael Wolfgang Muller | Director | 3 Sept 2013 | 21 Nov 2017 | British | 60 years |
| Paul David Skinner | Director | 1 Feb 1995 | 26 Feb 1999 | British | 82 years |
| Peter Adrian Ward | Director | 24 Jun 1996 | 27 Nov 2000 | British | 82 years |
| Peter John Hillman | Director | 1 Dec 1997 | 27 Feb 2006 | British | 81 years |
| Philip Basil Owen | Director | 22 Oct 1992 | 9 Jul 1994 | British | 90 years |
| Philip Beverley Watts | Director | 1 Apr 1995 | 31 Dec 1995 | British | 81 years |
| Philippa Alice May Bounds | Secretary | 18 Mar 2016 | 1 Jul 2023 | - | - |
| Richard Michael Jory | Director | 3 Apr 2024 | 12 Apr 2024 | British | 55 years |
| Robert George Herbert | Director | 3 Dec 1992 | 31 Dec 1994 | British | 90 years |
| Robert Joris Willem Walvis | Director | 21 Jun 1996 | 30 Jun 1997 | Dutch | 79 years |
| Slavko Preocanin | Director | 31 Aug 2011 | 4 May 2017 | British | 61 years |
| Stephen Murley Garfield Hodge | Director | 1 Apr 1995 | 26 Feb 1999 | British | 84 years |
| Steven Louis Miller | Director | 1 Apr 1995 | 1 Jul 1996 | American | 81 years |
| Thomas Jeffrey Brandt | Secretary | 1 Mar 2011 | 18 Mar 2016 | - | - |
| Timothy William Faithfull | Director | 1 Apr 1995 | 31 May 1996 | British | 82 years |
| Tinus De Vries | Director | 1 Jan 1994 | 31 Mar 1995 | Dutch | 87 years |
| Wolfgang Eckehard Mende | Director | 1 Mar 2006 | 4 May 2010 | German | 76 years |