| Aderemi Ladega | Secretary | 11 Apr 2005 | 30 Jun 2010 | British | - |
| Alan Henry Haywood | Director | 1 Apr 2010 | 10 Dec 2014 | British | 60 years |
| Alan Henry Haywood | Director | 20 Feb 2017 | 31 Mar 2020 | British | 60 years |
| Andrea Margaret Thomas | Secretary | 1 Sept 1997 | 11 Apr 2005 | Other | - |
| Andrew Phillip Milnes | Director | 3 Mar 2017 | 8 May 2018 | British | 62 years |
| Anna Cheng Catalano | Director | 1 Aug 1999 | 1 Dec 2001 | Us Citizen | 67 years |
| Brian Gilvary | Director | 1 Aug 2005 | 31 Dec 2009 | British | 64 years |
| Brian Michael Puffer | Director | 1 Jan 2018 | 30 Jun 2023 | British,american | 57 years |
| Brian Peevor | Secretary | 9 Feb 1994 | 30 May 1994 | British | - |
| Brian Peevor | Secretary | 1 Jul 1995 | 31 Aug 1997 | British | - |
| Byron Elmer Grote | Director | 1 May 2004 | 31 Dec 2004 | British And Us Citizen | 78 years |
| Carey Jude Mendes | Director | 1 Jan 2012 | 2 Nov 2015 | Canadian | 58 years |
| Carol-lee Howle | Director | 5 Nov 2018 | 16 Jul 2020 | British | 54 years |
| Christopher Alan Wright | Director | 16 Dec 1992 | 30 Jun 1995 | British | 79 years |
| Christopher Kuangcheng Gerald Eng | Secretary | 23 Mar 2009 | 30 Jun 2010 | - | - |
| Christopher Philip King | Director | 30 May 1992 | 31 Oct 1994 | British | 90 years |
| David Andrew James Baldry | Director | 30 Dec 2001 | 20 Apr 2004 | British | 71 years |
| David Hugh Walton Payne | Director | 1 Jul 1993 | 1 Dec 1997 | British | 84 years |
| David James Bucknall | Director | 10 Dec 2014 | 1 Jan 2018 | British | 58 years |
| David James Bucknall | Director | 16 Jul 2020 | 30 Sept 2021 | British | 58 years |
| David Simon | Director | 30 May 1992 | 9 Jun 1995 | British | 87 years |
| David Stephen Fitzsimmons | Director | 1 Mar 1999 | 1 Oct 1999 | British | 71 years |
| David William Knipe | Director | 16 Dec 2010 | 1 Jan 2012 | British | 52 years |
| Edmund John Phillip Browne | Director | 10 Jun 1995 | 30 Jun 1995 | British | 78 years |
| Elaine Patricia Skinner-reid | Director | 18 Jun 2024 | 13 Dec 2024 | Irish | 51 years |
| Emily Ehrgood Watt | Director | 30 Jun 2023 | 30 Sept 2025 | British | 41 years |
| Felipe Arbelaez | Director | 30 Oct 2015 | 26 May 2016 | British | 57 years |
| Geir Patrick Robinson | Director | 3 Aug 2018 | 1 Dec 2020 | British | 58 years |
| Gillian Elizabeth Young | Secretary | 30 May 1992 | 30 Jun 1995 | British | - |
| Henry John Hawkshaw | Director | 30 May 1992 | 1 Sept 1992 | British | 85 years |
| Humberto Vainieri | Director | 11 Nov 1997 | 30 Dec 1998 | Us Citizen | 78 years |
| Ian Springett | Director | 1 May 2005 | 7 Jul 2006 | British | 69 years |
| Jean Baptiste Michel Renard | Director | 1 Feb 2003 | 20 Apr 2004 | French | 65 years |
| Joachim Martin Mies | Director | 7 Jan 2008 | 1 Feb 2013 | German | 64 years |
| John Garwin Mcdonald | Director | 30 May 1992 | 1 Sept 1992 | Us Citizen | 91 years |
| John Gordon Sinclair Buchanan | Director | 16 Dec 1992 | 30 Jun 1995 | British | 83 years |
| Jorge Manuel Da Silva Tavares | Secretary | 30 May 1992 | 30 May 1993 | Portuguese | - |
| Julian Robin Darley | Director | 1 Jan 1994 | 30 Jun 1995 | British | 89 years |
| Karl Russell Seal | Director | 30 May 1992 | 30 Jun 1995 | British | 84 years |
| Katrina Ann Landis | Director | 25 Feb 2007 | 4 Dec 2007 | United States | 67 years |
| Leslie Atkinson | Director | 30 May 1992 | 1 Jul 1993 | British | 82 years |
| Mark Louis Noetzel | Director | 1 Dec 2001 | 1 Feb 2003 | American | 69 years |
| Mark Woolveridge | Director | 30 May 1992 | 31 Dec 1992 | British | 91 years |
| Michael John O'sullivan | Director | 1 Feb 2013 | 10 Dec 2014 | British | 62 years |
| Paul Jonathan Reed | Director | 7 Jul 2006 | 25 Feb 2007 | British | 70 years |
| Paul Jonathan Reed | Director | 7 Jan 2008 | 20 Feb 2017 | British | 70 years |
| Paul Lightle Fowler | Secretary | 16 Dec 1992 | 30 May 1994 | Usa | - |
| Paul Lightle Fowler | Secretary | 30 May 1993 | 31 Dec 1994 | Usa | - |
| Paul Ronald Vaight | Director | 1 Sept 1996 | 1 Dec 1997 | British | 82 years |
| Peter Alexander Short | Director | 23 Dec 2002 | 30 Dec 2002 | British | 71 years |
| Peter George Backhouse | Director | 11 Nov 1997 | 1 Mar 1999 | British | 75 years |
| Ralph Charles Alexander | Director | 5 Nov 1997 | 1 Aug 1999 | American | 71 years |
| Raymond Keith Hinkley | Director | 1 May 2003 | 1 Nov 2003 | British | 79 years |
| Raymond Keith Hinkley | Director | 1 May 2004 | 30 Dec 2004 | British | 79 years |
| Robert Stephen Lawson | Director | 20 Dec 2018 | 13 Jan 2020 | British | 56 years |
| Rodney Frank Chase | Director | 30 May 1992 | 30 Jun 1995 | British | 83 years |
| Rodney Frank Chase | Director | 11 Nov 1997 | 1 Mar 1999 | British | 83 years |
| Rolf Wilhelm Heinrich Stomberg | Director | 30 May 1992 | 1 Dec 1997 | German | 86 years |
| Ross John Pillari | Director | 11 Nov 1997 | 30 Dec 2001 | Us Citizen | 76 years |
| Samantha Elizabeth Skerry | Director | 26 May 2016 | 3 Mar 2017 | British | 51 years |
| Sharon Hyman Weintraub | Director | 16 Jul 2020 | 30 Jun 2023 | American | 61 years |
| Stephen James Ahearne | Director | 30 May 1992 | 30 Jun 1995 | British | 87 years |
| Steven Wellesley Percy | Director | 1 Sept 1992 | 30 Jun 1995 | Usa | 80 years |
| Stuart Craig Dee | Director | 30 Jun 2023 | 22 Aug 2024 | British | 54 years |
| Sven Roger Boss-walker | Director | 20 Dec 2021 | 18 Jun 2024 | Australian | 49 years |
| Timothy Bullock | Director | 25 Feb 2007 | 1 Dec 2010 | British | 65 years |
| Tony Fountain | Director | 30 Dec 2004 | 1 May 2005 | British | 66 years |
| Vivienne Cox | Director | 1 Oct 1999 | 25 Feb 2007 | British | 67 years |
| William James Luff | Director | 1 Jul 1995 | 30 Jun 1996 | New Zealander | 76 years |
| William James Luff | Secretary | 1 Jan 1995 | 30 Jun 1995 | New Zealander | - |
| Yasin Stanley Ali | Secretary | 19 Feb 2001 | 30 Jun 2010 | - | - |