| Alastair Roy Geoffrey Gunn | Director | 1 Jul 2010 | 31 May 2013 | British | 76 years |
| Alexander Donald Graham | Secretary | 1 Aug 1993 | 1 May 1996 | British | - |
| Alison Elizabeth Hutchinson | Director | 6 May 2014 | 31 Oct 2017 | British | 59 years |
| Andrew David Briggs | Director | 13 Apr 2015 | 24 Apr 2019 | British | 60 years |
| Andrew John Moss | Director | 10 Jun 2011 | 30 May 2012 | British | 68 years |
| Andrew Stephen Melcher | Director | 16 Sept 2010 | 31 Dec 2014 | British | 77 years |
| Angela Jane Darlington | Director | 6 Oct 2014 | 13 Apr 2015 | British | 58 years |
| Angela Jane Darlington | Director | 7 Aug 2019 | 30 Apr 2021 | British | 58 years |
| Anthony Blake Wyand | Director | 30 Sept 1998 | 1 Sept 2000 | British | 83 years |
| Anupam Sahay | Director | 5 Feb 2008 | 31 Dec 2009 | Indian | 57 years |
| Aviva Company Secretarial Services Limited | Corporate Secretary | 1 Dec 2004 | 28 Jun 2007 | United Kingdom | - |
| Barrie Holder | Director | 12 Jul 1992 | 30 Nov 1995 | British | 81 years |
| Belinda Jane Richards | Director | 17 Apr 2015 | 28 Sept 2017 | British | 68 years |
| Cathryn Elizabeth Riley | Director | 1 Jul 2003 | 18 Dec 2006 | British | 64 years |
| Cathryn Elizabeth Riley | Director | 2 Aug 2004 | 2 Aug 2004 | British | 64 years |
| Cathryn Elizabeth Riley | Director | 5 Feb 2008 | 31 Dec 2008 | British | 64 years |
| Cathryn Riley | Director | 24 Feb 2010 | 10 Jun 2011 | British | 64 years |
| Charlotte Claire Jones | Director | 5 Sept 2022 | 1 Apr 2024 | British | 58 years |
| Cheryl Margaret Agius | Director | 5 Jul 2021 | 16 May 2024 | Irish | 55 years |
| Christopher Brian Wei | Director | 1 Jan 2015 | 31 Jul 2015 | Canadian | 59 years |
| Clifford James Abrahams | Director | 26 Jul 2012 | 1 Apr 2013 | British | 59 years |
| Clifford James Abrahams | Director | 24 Feb 2014 | 30 Jun 2015 | British | 59 years |
| Craig James Thornton | Director | 1 Sept 2011 | 8 Mar 2013 | British | 54 years |
| David Barclay Barral | Director | 2 Mar 2009 | 23 Feb 2010 | British | 64 years |
| David Barclay Barral | Director | 10 Jun 2011 | 13 Apr 2015 | British | 64 years |
| David Frederick Swiffen Rogers | Director | 10 Oct 2019 | 30 Oct 2020 | British | 70 years |
| David Mcmillan | Director | 24 Feb 2010 | 25 Jul 2012 | British | 60 years |
| David Philip Allvey | Director | 17 Apr 2015 | 31 Mar 2016 | British | 81 years |
| Gary Nigel Withers | Director | 1 Sept 2002 | 31 Mar 2006 | British | 64 years |
| Gillian Margaret Vance | Director | 14 Jun 2002 | 30 Nov 2004 | British | 72 years |
| Hiteshkumar Rameshchandra Patel | Director | 31 Jul 2013 | 31 Jul 2013 | British | 65 years |
| Hiteshkumar Rameshchandra Patel | Director | 5 Nov 2013 | 31 Dec 2019 | British | 65 years |
| Iain Anthony Pearce | Director | 27 Nov 2020 | 1 Apr 2024 | British | 55 years |
| Ian Alexander Chambers | Secretary | 12 Jul 1992 | 31 Jul 1993 | British | - |
| Igal Mordeciah Mayer | Director | 5 Feb 2008 | 31 Dec 2009 | Israeli | 65 years |
| James Allen Newman | Director | 14 Jun 2002 | 1 Jun 2005 | British | 62 years |
| Jason Michael Windsor | Director | 7 Aug 2016 | 7 Aug 2019 | British | 54 years |
| Jason Michael Windsor | Director | 19 Oct 2020 | 20 May 2022 | British | 54 years |
| Jennifer Jane Wilman | Secretary | 27 Jun 2007 | 31 Jul 2015 | British | - |
| John Ainley | Director | 2 Aug 2004 | 31 Mar 2006 | British | 70 years |
| John Brendan O'roarke | Director | 8 Mar 2018 | 30 Jun 2021 | British | 68 years |
| John Robert Lister | Director | 15 Dec 2006 | 23 Feb 2010 | British | 68 years |
| John Robert Lister | Director | 14 May 2013 | 7 Aug 2016 | British | 68 years |
| John Russell Fotheringham Walls | Director | 13 Apr 2015 | 28 Feb 2018 | British | 82 years |
| Julian Hugh Renwick Tonks | Director | 12 Jul 1992 | 31 Mar 1993 | British | 96 years |
| Keith William Abercromby | Director | 28 Nov 2005 | 14 Sept 2006 | British | 62 years |
| Lindsey Claire Rix | Director | 6 May 2020 | 14 Apr 2021 | British | 46 years |
| Mark Andrew Pain | Director | 1 Jul 2010 | 30 Sept 2013 | British | 65 years |
| Mark Steven Hodges | Director | 15 Dec 2006 | 2 Jun 2011 | British | 61 years |
| Mel Gerard Carvill | Director | 21 Apr 2015 | 30 Jun 2022 | British,irish | 64 years |
| Michael John Hawker | Director | 1 Jan 2017 | 31 Mar 2017 | Australian | 67 years |
| Michael John Kellard | Director | 23 Feb 2024 | 1 Aug 2025 | British | 65 years |
| Michael Nicholas Biggs | Director | 31 Mar 2001 | 14 Jun 2002 | British | 74 years |
| Michael Norris Urmston | Director | 1 Sept 2000 | 31 Mar 2006 | British | 77 years |
| Michael Terence Kirsch | Director | 14 Jun 2002 | 14 Sept 2006 | British | 65 years |
| Monica Risam | Secretary | 1 Aug 2015 | 31 Aug 2017 | - | - |
| Nicholas Dutfield Rochez | Director | 16 Sept 2010 | 1 Apr 2013 | British | 72 years |
| Nicolaos Nicandrou | Director | 10 Oct 2006 | 27 Apr 2009 | British | 61 years |
| Patrick Joseph Robert Snowball | Director | 15 Dec 2006 | 3 May 2007 | British | 76 years |
| Peter Edward Hessey | Director | 14 Jun 2002 | 2 Aug 2004 | British | 75 years |
| Peter James Foster | Director | 1 Sept 2000 | 30 Mar 2001 | British | 80 years |
| Peter Robert Hales | Director | 14 Jun 2002 | 31 Mar 2006 | British | 80 years |
| Philip Gordon Scott | Director | 1 Sept 2000 | 1 Jul 2003 | British | 72 years |
| Philip Johnson Twyman | Director | 25 Sept 1996 | 1 Sept 2000 | Australian | 82 years |
| Philip Martin White | Secretary | 1 May 1996 | 30 Nov 2004 | British | - |
| Richard John Harvey | Director | 1 Sept 2000 | 14 Jun 2002 | British | 76 years |
| Richard John Harvey | Director | 2 Jul 2003 | 17 Mar 2006 | British | 76 years |
| Richard Karl Goeltz | Director | 14 May 2013 | 13 Apr 2015 | American | 84 years |
| Robert Avisson Scott | Director | 1 Jan 1996 | 24 Apr 2001 | Australian | 84 years |
| Robert William Albert Howe | Director | 31 Jul 2013 | 31 Jul 2013 | British | 77 years |
| Robert William Albert Howe | Director | 24 Dec 2013 | 28 Mar 2023 | British | 77 years |
| Robin Lloyd Spencer | Director | 26 Jul 2012 | 1 Apr 2013 | British | 56 years |
| Stephen Andrew Joseph Mann | Director | 29 Apr 2005 | 18 Dec 2006 | British | 61 years |
| Stephen Paul Trickett | Director | 2 Sept 2016 | 30 Aug 2023 | British | 69 years |
| Tidjane Cheick Thiam | Director | 4 Jul 2003 | 17 Mar 2006 | French | 64 years |
| Toby Emil Strauss | Director | 2 Mar 2009 | 23 May 2011 | British | 67 years |
| Trevor John Matthews | Director | 7 Dec 2011 | 1 Apr 2013 | Australian | 74 years |
| Valerie Frances Gooding | Director | 28 Feb 2018 | 23 Jul 2020 | British | 76 years |
| William Henderson Jack | Director | 12 Jul 1992 | 1 Sept 2000 | British | 82 years |
| William Nelson Robertson | Director | 12 Jul 1992 | 31 Dec 1995 | British | 93 years |