| Alexander Donald Stewart | Director | 1 Jul 1990 | 27 Apr 1994 | British | 92 years |
| Alison Victoria Crossley | Director | 29 Jan 2007 | 30 Sept 2007 | British | 62 years |
| Andrew David Briggs | Director | 25 Aug 2006 | 2 Oct 2006 | British | 59 years |
| Andrew Jonathan Brown | Director | 26 Jul 2001 | 31 Mar 2003 | British | 81 years |
| Andrew Michael Crossley | Director | 11 Jun 2008 | 11 Feb 2011 | British | 69 years |
| Archibald Mackay Stevenson | Secretary | 29 Mar 1989 | 19 Jan 1990 | British | - |
| Archibald William Stewart Gilchrist | Director | 1 Jul 1990 | 1 Apr 1997 | British | 71 years |
| Bernard Solomons | Director | 1 Apr 1994 | 1 Oct 1997 | British | 81 years |
| Brian Willian Hurd | Director | 20 Jun 2005 | 2 Nov 2006 | United Kingdom | 63 years |
| Clare Jane Bousfield | Director | 6 Jun 2019 | 30 Sept 2023 | British | 57 years |
| Daniel John Pender | Director | 13 Feb 2015 | 8 Dec 2015 | British | 50 years |
| David George Green | Secretary | 30 Sept 1997 | 1 Aug 2000 | British | - |
| David Ian Hunter | Director | 1 Jul 1990 | 20 Dec 1996 | British | 72 years |
| David James Bruce Sutherland | Director | 1 Jul 1990 | 1 Oct 1997 | British | 76 years |
| David John Court | Director | 14 Jul 1995 | 1 Oct 1997 | British | 69 years |
| David Roy Macmillan | Director | 3 Jul 2017 | 24 May 2018 | British | 57 years |
| Douglas Ferrans | Director | 1 Jul 1990 | 1 Oct 1997 | British | 71 years |
| Ernest Laidlaw Mcknight | Director | 1 Jul 1990 | 4 Jun 1991 | British | 73 years |
| Finbar Anthony O'dwyer | Director | 14 Jan 2009 | 11 Feb 2011 | Irish | 54 years |
| Gary Paul John Shaughnessy | Director | 31 Oct 2006 | 25 Sept 2008 | British | 59 years |
| Gary Thomas Mairs | Director | 16 Aug 1995 | 1 Oct 1997 | British | 58 years |
| Gregory Mark Wood | Director | 31 Oct 2001 | 30 Jul 2003 | British | 72 years |
| Iain Hunter Beattie | Director | 8 Jan 1996 | 1 Oct 1997 | British | 70 years |
| Ian David Kerr | Director | 20 Nov 2006 | 1 May 2007 | British | 70 years |
| James Smith | Director | 16 Mar 2001 | 31 Oct 2001 | British | 67 years |
| James White Jack | Director | 30 Nov 2000 | 30 Jul 2004 | British | 74 years |
| Jeremy Spencer Deeks | Director | 11 Feb 2011 | 9 Nov 2016 | British | 55 years |
| John Clark Betteridge | Director | 29 Aug 2007 | 31 Dec 2013 | British | 67 years |
| John Ewart Robertson | Director | 1 Jul 1990 | 28 Nov 1997 | British | 73 years |
| John Martin Wilson | Director | 1 Jul 1990 | 30 Sept 1997 | British | 80 years |
| John Martin Wilson | Secretary | 19 Jan 1990 | 10 Apr 1998 | British | - |
| John Napier Allan | Director | 6 Jan 1992 | 26 Nov 1993 | British | 78 years |
| Jonathan Mark Donald Sandell | Director | 30 Aug 2016 | 14 Nov 2017 | British | 52 years |
| Keith Alan Lovett | Director | 10 Sept 1997 | 30 Nov 2000 | British | 68 years |
| Keith Haggart | Director | 12 Oct 2007 | 30 Jun 2010 | British | 61 years |
| Michael James Lifford Macnaughtan Hawes | Director | 30 Aug 2016 | 6 Jun 2019 | British | 61 years |
| Michael John Moores | Director | 28 Nov 2001 | 2 Sept 2002 | British | 69 years |
| Nicolas John Hayter | Director | 9 Sept 2004 | 20 Jun 2005 | British | 60 years |
| Nigel Stephen Boyling | Director | 15 Dec 1999 | 30 Nov 2000 | British | 69 years |
| Paul David Cooper | Director | 10 Dec 2019 | 6 May 2022 | British | 53 years |
| Paul Nigel Sheriff | Director | 20 Jun 2005 | 25 Aug 2006 | British | 56 years |
| Prudential Group Secretarial Services Limited | Corporate Secretary | 31 Oct 2001 | 4 Oct 2019 | United Kingdom | - |
| Raymond Anderson | Director | 4 Apr 1990 | 31 Dec 1991 | British | 91 years |
| Richard Charles Everett | Director | 30 Jul 2003 | 19 May 2005 | British | 60 years |
| Robert David Maxwell Marshall | Director | 16 Mar 2001 | 31 Oct 2001 | British | 74 years |
| Rodney John Dennis | Director | 30 Sept 1997 | 1 Nov 1999 | British | 73 years |
| Roger Charles Fishwick | Director | 4 Sept 1997 | 16 Dec 1999 | British | 72 years |
| Roger Charles Ramsden | Director | 20 Jun 2005 | 31 May 2006 | British | 65 years |
| Ronald Andrew Baird Miller | Director | 1 May 1993 | 1 Oct 1997 | British | 88 years |
| Roy Macdonald Nicolson | Director | 1 Jul 1990 | 1 Oct 1997 | British | 81 years |
| Timothy James William Tookey | Director | 2 Sept 2002 | 30 Jul 2003 | British | 63 years |
| Tony Lee | Secretary | 5 Feb 2001 | 31 Oct 2001 | British | - |
| Tulsi Ratakonda Naidu | Director | 11 Feb 2011 | 31 May 2016 | Indian | 52 years |
| Vanessa Frances Ruparel | Secretary | 1 Aug 2000 | 5 Feb 2001 | British | - |
| William Charles Carnegie Morrison | Director | 14 Jul 1995 | 1 Oct 1997 | British | 87 years |
| William Graeme Knox | Director | 29 Mar 1989 | 16 Oct 1995 | British | 80 years |
| William Proudfoot | Director | 29 Mar 1989 | 30 Jun 1990 | British | 93 years |