| Ann Marie Murtlow | Director | 7 May 1999 | 27 Mar 2002 | American | 66 years |
| Bruno De Almeida Laranjeira | Director | 1 Jun 2018 | 12 Jun 2019 | Portuguese | 45 years |
| Carla Michelle Tully | Director | 27 Jan 2015 | 26 Jun 2017 | Us | 54 years |
| David Bothwell | Secretary | 1 Oct 2010 | 21 Apr 2011 | British | - |
| David Mc Ilhagger | Director | 25 Oct 1991 | 22 Jun 2000 | British | 86 years |
| Eric Kenis | Director | 25 Oct 1991 | 12 May 2000 | Belgian | 74 years |
| Florent Gheeraert | Director | 29 Apr 1998 | 12 May 2000 | Belgian | 88 years |
| Heather Spence | Secretary | 26 Jun 2017 | 23 May 2022 | - | - |
| Ian Robert Luney | Director | 29 Aug 2014 | 2 Aug 2018 | British | 58 years |
| Ian Robert Luney | Director | 26 Sept 2019 | 8 Dec 2022 | British | 58 years |
| James Peter Chiodini | Secretary | 31 Oct 2022 | 15 Feb 2023 | - | - |
| John Derek Paton | Director | 3 Mar 2006 | 13 Feb 2009 | British | 71 years |
| John Keith Mclaren | Director | 3 Mar 2006 | 29 Sept 2009 | British | 64 years |
| Julian Jose Marquez | Director | 29 Sept 2009 | 8 Mar 2016 | Venezuelan | 60 years |
| Julie Leeburn | Secretary | 21 Apr 2011 | 12 Jun 2019 | - | - |
| Kristina Lund | Director | 22 Dec 2017 | 31 May 2018 | American | 49 years |
| Lisa O'neill | Secretary | 30 Sept 2009 | 1 May 2014 | British | - |
| Mark Edward Miller | Director | 5 Mar 2009 | 27 Jan 2015 | American | 65 years |
| Mark Edward Reynolds | Director | 11 Sept 2017 | 22 Dec 2017 | British | 62 years |
| Mark Eugene Green | Director | 18 Apr 2016 | 12 Jun 2019 | American | 59 years |
| Mark Raymond Green | Director | 18 Apr 2016 | 18 Apr 2016 | British | 67 years |
| Mark Stuart Fitzpatrick | Director | 25 Oct 1991 | 28 Jun 2002 | Usa | 75 years |
| Michael Norman Armstrong | Director | 27 Mar 2002 | 16 Dec 2003 | British | 68 years |
| Neil Allen Hopkins | Director | 25 Oct 1991 | 1 Mar 2004 | British | 62 years |
| Pierre Jules Maurice Michel | Director | 16 Feb 1999 | 12 May 2000 | Belgian | 89 years |
| Richard Scott Berge | Director | 2 Aug 2018 | 12 Jun 2019 | American | 50 years |
| Robert George Alex Mcneilly | Director | 8 Jan 2001 | 30 Sept 2009 | British | 74 years |
| Robert George Alex Mcneilly | Secretary | 25 Oct 1991 | 30 Sept 2009 | British | - |
| Roger Graham | Director | 8 Jan 2001 | 16 May 2004 | British | 70 years |
| Roger Paul Casement | Director | 2 Sept 2013 | 31 May 2018 | Irish | 63 years |
| Rolf Karl Godesar | Director | 25 Oct 1991 | 12 May 2000 | Belgian | 84 years |
| Samuel James Sittlington | Director | 10 Jul 2000 | 10 Jul 2000 | British | 79 years |
| Serhiy Zuyev | Director | 2 Aug 2018 | 2 Aug 2018 | Ukrainian | 52 years |
| Serhiy Zuyev | Director | 2 Aug 2018 | 12 Jun 2019 | Ukrainian | 52 years |
| Shane John Joseph Lynch | Director | 8 Jan 2001 | 3 Mar 2006 | Irish | 64 years |
| Stephen Robert Corwell | Director | 28 Oct 2009 | 28 Oct 2009 | American | 71 years |
| Stephen Robert Corwell | Director | 28 Oct 2009 | 2 Sept 2013 | American | 71 years |
| William Mcilhatton | Director | 6 Jul 2000 | 6 Jul 2000 | British | 76 years |