| Alan Keith Simpson | Director | 18 Feb 1997 | 31 Dec 1998 | British | 86 years |
| Albert Norman Dungate | Director | 1 Jun 2011 | 23 Jul 2015 | British | 70 years |
| Alec Taylor | Secretary | 17 Jul 2002 | 30 Jun 2005 | British | - |
| Alistair John Beeston | Director | 5 Feb 1997 | 30 Sept 1998 | British | 84 years |
| Andrew Hampden Hobart | Director | 1 Jan 2002 | 17 Nov 2005 | British | 64 years |
| Austin Spencer Lewis | Director | 2 Sept 2010 | 3 Feb 2015 | British | 60 years |
| Aviva Company Secretarial Services Limited | Corporate Secretary | 30 Jun 2005 | 27 Apr 2006 | United Kingdom | - |
| Benjamin Michael Stancliffe | Director | 5 Sept 2014 | 20 Dec 2016 | British | 54 years |
| Brian Stephen Templar | Director | 4 Feb 1994 | 31 Dec 1995 | British | 74 years |
| Charles Bruce Arthur Cormick | Secretary | 10 Feb 1989 | 30 Oct 1992 | British | - |
| Christopher John Cundy | Director | 27 Apr 2006 | 13 Dec 2007 | British | 65 years |
| Christopher Paul Sullivan | Director | 25 Oct 1996 | 30 Jun 2001 | British | 69 years |
| David Allistair Galloway | Director | 10 Feb 1989 | 19 Dec 1994 | British | 81 years |
| David John Lawton | Director | 28 Aug 2013 | 5 Sept 2014 | British | 51 years |
| David Michael Smith | Director | 30 Jul 1996 | 13 Sept 2004 | British | 73 years |
| Deborah Ann Ives | Secretary | 18 Feb 1999 | 20 Dec 1999 | British | - |
| Eion Arthur Mcmorran Flint | Director | 30 Jun 2001 | 4 Jan 2005 | British | 74 years |
| Elaine Richardson | Secretary | 28 Apr 1997 | 26 Jun 1998 | British | - |
| Elizabeth Irvine Reid Jonsson | Secretary | 21 Jul 2000 | 1 Mar 2002 | British | - |
| Frances Carey | Director | 24 Nov 2005 | 6 Dec 2005 | British, Canadian | 73 years |
| Franco Martinelli | Director | 9 Jul 2010 | 23 Jul 2015 | British | 66 years |
| Graham David Leeming | Director | 2 Sept 2010 | 1 Jul 2016 | British | 58 years |
| Iain Stuart Urquhart | Director | 20 Dec 2016 | 15 Jan 2018 | British | 61 years |
| James Richard Parker | Director | 20 Dec 2016 | 22 May 2023 | British | 49 years |
| Jeffrey Johnson | Director | 27 Jul 1992 | 8 Nov 1999 | British | 81 years |
| John Derek Fitch | Director | 5 Feb 1997 | 9 Dec 1998 | British | 89 years |
| John Douglas Purdy | Director | 10 Feb 1989 | 31 Dec 1996 | British | 89 years |
| John Mcgrath | Director | 1 Jun 2011 | 28 Aug 2013 | British | 55 years |
| John Richard Davies | Director | 31 Mar 2007 | 2 Sept 2010 | British | 63 years |
| John Richard Davies | Director | 1 Dec 2015 | 9 Jan 2018 | British | 63 years |
| Jonathan Kim Walden | Director | 27 Jul 1992 | 4 Feb 1994 | British | 73 years |
| Kevin Richard Thomas | Director | 2 Sept 2010 | 2 Nov 2015 | British | 72 years |
| Louise Catherine Atkinson | Director | 12 Jul 2023 | 26 Mar 2024 | British | 44 years |
| Malcolm Hugh Melvin Ogle | Director | 10 Feb 1989 | 30 Mar 1990 | British | 82 years |
| Malcolm Murray Robertson | Director | 5 May 1992 | 8 Apr 1994 | British | 72 years |
| Mark Jonathan Lewis | Director | 17 Nov 2005 | 3 Feb 2006 | British | 61 years |
| Mark Lees Young | Secretary | 30 Oct 1992 | 28 Apr 1997 | British | - |
| Mark Lees Young | Secretary | 26 Jun 1998 | 18 Feb 1999 | British | - |
| Mark Lees Young | Secretary | 20 Dec 1999 | 22 May 2000 | British | - |
| Martin Edward Powell | Director | 30 Sept 1998 | 28 May 1999 | British | 71 years |
| Matthew Hayward | Director | 17 Jan 2019 | 8 Dec 2021 | British | 60 years |
| Matthew Paul Jowett | Secretary | 27 Apr 2006 | 9 Jul 2010 | British | - |
| Michael Alan Maberly | Director | 12 Nov 1990 | 31 Dec 1996 | British | 90 years |
| Neal Gregory Misell | Director | 8 Jun 2012 | 1 Jul 2016 | British | 59 years |
| Neil Peter Donaldson French | Director | 10 Feb 1989 | 13 Oct 1989 | British | 76 years |
| Nicholas James William Borrett | Secretary | 27 Jul 2012 | 25 Feb 2013 | - | - |
| Nigel Timothy John Clibbens | Director | 5 May 2004 | 24 Nov 2005 | British | 67 years |
| Pamela Mary Coles | Secretary | 22 May 2000 | 21 Jul 2000 | British | - |
| Pamela Mary Coles | Secretary | 1 Mar 2002 | 17 Jul 2002 | British | - |
| Paul William Hewitt | Director | 14 Jul 1999 | 28 Mar 2003 | British | 70 years |
| Peter Cosgrove | Director | 19 Dec 1994 | 18 Feb 1997 | British | 74 years |
| Peter Cosgrove | Director | 31 Dec 1998 | 14 Jul 1999 | British | 74 years |
| Peter Edmund Lord | Director | 28 May 1999 | 24 Nov 2005 | British | 68 years |
| Peter Higgins | Director | 9 Dec 1998 | 30 Mar 2000 | British | 73 years |
| Peter Robert Harris | Director | 26 Apr 1994 | 31 Dec 2001 | British | 75 years |
| Peter Robert Harris | Director | 13 Sept 2004 | 27 Apr 2006 | British | 75 years |
| Philip James Harrison | Director | 13 Dec 2007 | 9 Jul 2010 | British | 65 years |
| Richard Hewitt Taylor | Director | 1 Jul 2016 | 31 Oct 2021 | British | 65 years |
| Richard Mark Priestman | Director | 4 Jan 2005 | 24 Nov 2005 | British | 70 years |
| Robert Duncan Brodie | Director | 30 Mar 2000 | 5 May 2004 | British | 61 years |
| Roger Keith Gillespie | Director | 1 Jun 2011 | 28 Aug 2013 | British | 70 years |
| Ronald Alan Stuart Costin | Director | 16 Nov 1989 | 5 May 1992 | British | 83 years |
| Ronald James Young | Director | 10 Feb 1989 | 1 Aug 1995 | British | 93 years |
| Samuel Michael White | Director | 1 Jul 2016 | 20 Apr 2020 | British | 50 years |
| Simon Alan Bowles | Director | 7 May 2003 | 30 Jun 2005 | British | 69 years |
| Simon Christopher Machell | Director | 30 Jun 2005 | 27 Apr 2006 | British | 63 years |
| Simon Edward Tarrant | Director | 27 Apr 2006 | 31 Mar 2007 | British | 74 years |
| Steven West | Director | 30 Apr 2018 | 8 Nov 2019 | British | 51 years |
| Terrence Robinson | Director | 10 Feb 1989 | 14 May 1991 | British | 80 years |
| Tom Newman | Director | 30 Apr 2018 | 17 Jan 2019 | British | 46 years |
| Valerie Francine Anne Teller | Secretary | 9 Jul 2010 | 27 Jul 2012 | - | - |