| Abdulla Mohammed Abdulla Saeed Bin Damithan Alqmzi | Director | 16 Jul 2012 | 16 Apr 2018 | Emirati | 48 years |
| Alan George Hatchett | Director | 6 Sept 1991 | 16 Dec 1991 | British | 102 years |
| Alistair Baillie | Director | 1 Jan 1998 | 29 Jan 2004 | British | 67 years |
| Andrew Richard Burgess | Director | 28 Jan 1997 | 16 Feb 1998 | Australian | 81 years |
| Andrew Stewart Kent | Director | 16 Dec 1991 | 31 Mar 2005 | British | 78 years |
| Andrew William Smith | Director | 13 May 1997 | 22 Feb 1999 | English | 76 years |
| Anthony John Mason | Director | 12 Apr 1994 | 13 Jan 1997 | British | 75 years |
| Bo Ake Lerenius | Director | 14 Jun 1999 | 30 Mar 2007 | Swedish | 80 years |
| Bruce Leonard Archer Dawes | Director | 6 Sept 1991 | 31 Mar 1998 | British | 84 years |
| Campbell Dermot Nelson Mason | Director | 11 Apr 2007 | 11 Dec 2009 | British Australian | 61 years |
| Charles Kenneth James Kirsop | Director | 6 Sept 1991 | 17 Oct 1991 | British | 81 years |
| Charles William Orange | Director | 6 Sept 1991 | 16 Dec 1991 | British | 84 years |
| Charles William Orange | Director | 14 Feb 1997 | 15 Nov 1999 | British | 84 years |
| Clifford Leroy Miller | Director | 6 Sept 1991 | 16 Mar 1994 | British | 85 years |
| Dennis Dunn | Director | 3 Jul 1998 | 31 Mar 2002 | British | 86 years |
| Dirk Van Den Bosch | Director | 15 May 2018 | 14 Nov 2021 | Belgian | 68 years |
| Douglas Downie Morrison | Director | 1 Apr 2005 | 31 Dec 2013 | British | 75 years |
| Eduard Liviu Cioran | Director | 2 Apr 2015 | 16 Dec 2016 | Romanian | 54 years |
| Flemming Dalgaard | Director | 22 Apr 2008 | 2 Apr 2015 | Danish | 62 years |
| Francis Christopher Lewis | Director | 1 Feb 2010 | 30 Sept 2019 | British | 72 years |
| Ganesh Raj Jayaraman | Director | 15 Feb 2016 | 16 Apr 2018 | Australian | 62 years |
| George Sebastian Matthew Bull | Director | 25 Feb 2011 | 30 Oct 2015 | British | 66 years |
| Graham John Wilkin | Secretary | 1 May 1997 | 1 Oct 1998 | British | - |
| Ian Bruce Malcolm | Director | 15 May 2018 | 6 Dec 2018 | British | 53 years |
| Ian David Cameron Simm | Director | 9 Dec 2005 | 3 Aug 2006 | British | 59 years |
| James Constantine Stuart Mcclean | Director | 1 May 1994 | 13 May 1997 | British | 67 years |
| James Constantine Stuart Mcclean | Director | 3 Jul 1998 | 15 Nov 1999 | British | 67 years |
| James Nigel Shelley Cooper | Director | 2 Apr 2013 | 30 Oct 2015 | British | 65 years |
| Jamie Frater | Director | 1 Apr 1998 | 31 Oct 2000 | British | 71 years |
| Jane Elizabeth Douglas | Director | 3 Feb 2014 | 16 Dec 2016 | British | 44 years |
| Jeremy James Lennox Rickcord | Director | 1 Apr 1998 | 29 Jan 2004 | British | 75 years |
| John William Buckley | Director | 29 Jan 2004 | 25 Apr 2005 | Australian | 71 years |
| Malcolm Frederick Ravenscroft | Director | 3 Jul 1998 | 22 Feb 1999 | British | 78 years |
| Mantraraj Dipak Budhdev | Director | 15 May 2018 | 25 Nov 2021 | British | 40 years |
| Marion Olivia Ward | Director | 16 Dec 1991 | 31 May 1997 | British | 75 years |
| Martin William Pudden | Director | 6 Sept 1991 | 30 Sept 1991 | British | 95 years |
| Michael Andrew Gibson | Director | 1 Oct 1998 | 31 Aug 2002 | British | 71 years |
| Michael Andrew Gibson | Secretary | 1 Oct 1998 | 31 Aug 2002 | British | - |
| Michael Anthony Perrier Cattell | Secretary | 6 Sept 1991 | 30 Apr 1997 | British | - |
| Michael David Denchfield | Director | 6 Sept 1991 | 16 Apr 1996 | British | 89 years |
| Mohammad Alhashimy | Secretary | 1 Apr 2016 | 17 Jul 2023 | - | - |
| Nicholas Antony West | Director | 26 May 2001 | 23 Jun 2006 | British | 61 years |
| Nicholas James Ridehalgh | Director | 31 Dec 2013 | 30 Oct 2015 | British | 60 years |
| Nicholas Lawrence Luff | Director | 28 Jan 1997 | 24 Aug 2000 | British | 59 years |
| Nicholas Paul Loader | Director | 25 Apr 2005 | 11 Jul 2023 | British | 64 years |
| Nicholas Paul Loader | Secretary | 25 Apr 2005 | 1 Apr 2016 | British | - |
| Patrick William Walters | Director | 1 Sept 2002 | 22 Apr 2008 | British | 60 years |
| Patrick William Walters | Secretary | 1 Sept 2002 | 25 Apr 2005 | British | - |
| Patrick William Walters | Director | 1 Jul 1998 | 26 May 2001 | British | 60 years |
| Peter Anthony Jones | Director | 30 Mar 2007 | 2 Apr 2013 | British | 71 years |
| Peter Arthur Walker | Director | 16 Apr 1996 | 15 Jan 1997 | British | 73 years |
| Peter Arthur Walker | Director | 3 Aug 2006 | 3 Feb 2014 | British | 73 years |
| Peter Graham Pike | Director | 30 Sept 1991 | 27 Aug 1992 | British | 89 years |
| Raymond Alastair Channing | Director | 6 Sept 1991 | 14 Feb 1997 | British | 83 years |
| Richard John Adam | Director | 15 Nov 1999 | 28 Feb 2007 | British | 69 years |
| Roger Roels | Director | 23 Jun 2006 | 11 Apr 2007 | Belgian | 71 years |
| Roger Roels | Director | 29 Jan 2004 | 9 Dec 2005 | British | 76 years |
| Teo Chin Seng | Director | 16 Dec 2016 | 15 May 2018 | Singaporean | 65 years |
| Zafar Iqbal Khan | Director | 28 Feb 2007 | 25 Feb 2011 | British | 58 years |