| Alan Ewing Mills | Secretary | 7 Oct 1992 | 13 Mar 1998 | British | - |
| Andrew James Morris | Director | 7 Sept 2006 | 20 Oct 2008 | British | 53 years |
| Aubrey John Adams | Director | 22 Dec 2011 | 11 Mar 2015 | British | 76 years |
| Carolyn Smith | Secretary | 11 Dec 2000 | 30 Mar 2001 | British | - |
| David Edmund Cartledge | Director | 21 Dec 1993 | 8 Feb 2010 | British | 79 years |
| Declan Joseph Hourican | Director | 26 Jan 2009 | 18 Aug 2011 | Irish | 49 years |
| Declan Joseph Hourican | Director | 5 Sept 2014 | 7 Sept 2016 | Irish | 49 years |
| Derek Stephen Sach | Director | 24 May 1993 | 13 Mar 1997 | British | 77 years |
| Derek Stephen Sach | Director | 11 Dec 1998 | 18 Aug 2011 | British | 77 years |
| Ernest Michael Sheavills | Director | 24 May 1993 | 31 Dec 2005 | British | 80 years |
| Grahame Taylor Whitehead | Director | 7 Oct 1992 | 28 Feb 2003 | British | 75 years |
| Helen Christine Gordon | Director | 22 Dec 2011 | 31 Oct 2015 | British | 66 years |
| Ian Roberts | Director | 29 Mar 2011 | 31 Mar 2015 | British | 58 years |
| James Mccubbin Rowney | Director | 4 Oct 2010 | 19 May 2025 | British | 61 years |
| John Donald Black Workman | Director | 5 Mar 2001 | 15 Nov 2001 | British | 73 years |
| John Thomas Henry Miller | Director | 7 Oct 1992 | 24 May 1993 | British | 82 years |
| Jose Guillermo Brena | Director | 26 Feb 2003 | 12 Dec 2003 | British | 66 years |
| Joy Mcadam | Director | 8 Feb 2010 | 18 Aug 2011 | British | 60 years |
| Kavita Gopinathan | Director | 31 Jul 2012 | 5 Sept 2014 | Malaysian | 46 years |
| Kennedy Campbell Foster | Director | 7 Oct 1992 | 13 Sept 1994 | British | 75 years |
| Laura Jane Barlow | Director | 8 Feb 2010 | 10 Aug 2011 | British | 58 years |
| Maria Marchant | Secretary | 3 Dec 2001 | 24 Feb 2003 | British | - |
| Mark Andrew Lambert | Director | 5 Mar 2001 | 10 Mar 2006 | British | 59 years |
| Mark Brandwood | Director | 5 Jan 2016 | 14 Jun 2022 | British | 61 years |
| Mark Craig | Secretary | 24 Feb 2003 | 14 Aug 2008 | British | - |
| Martin Spencer Nicholls | Director | 13 Dec 2005 | 8 Feb 2010 | British | 73 years |
| Miller Roy Mclean | Director | 7 Oct 1992 | 24 May 1993 | British | 76 years |
| Nadim-ul Hassan Sheikh | Director | 2 Sept 2011 | 31 Jul 2012 | British | 55 years |
| Nathan Mark Bostock | Director | 8 Feb 2010 | 18 Aug 2011 | British | 65 years |
| Paul Richard Aubery | Director | 5 Jun 2009 | 19 Apr 2010 | British | 61 years |
| Philip Andrew Carraro | Director | 9 Jun 1999 | 20 Apr 2009 | United States Citizen | 81 years |
| Rachel Elizabeth Fletcher | Secretary | 15 Aug 2008 | 27 Apr 2012 | British | - |
| Rbs Secretarial Services Limited | Corporate Secretary | 27 Apr 2012 | 1 Oct 2019 | United Kingdom | - |
| Robert Henry Beattie | Director | 7 Oct 1992 | 21 Dec 1993 | British | 76 years |
| Robert Henry Beattie | Director | 13 Sept 1994 | 5 Nov 2003 | British | 76 years |
| Robert Speirs | Director | 13 Mar 1997 | 23 Oct 1998 | British | 89 years |
| Rory Malcolm Cullinan | Director | 5 Nov 2003 | 21 Jul 2004 | British | 66 years |
| Rory Malcolm Cullinan | Director | 8 Feb 2010 | 18 Aug 2011 | British | 66 years |
| Shirley Margaret Macgillivray | Secretary | 13 Mar 1998 | 3 Dec 2001 | British | - |
| Simon Jonathan Chrispin | Director | 11 Dec 1998 | 10 Apr 2001 | British | 63 years |
| Stephen Brian Eighteen | Director | 5 Jun 2009 | 18 Aug 2011 | British | 67 years |
| Thomas Peter Kennedy | Director | 20 Oct 2008 | 8 Feb 2010 | British | 67 years |