| Adam Beckett | Director | 8 Nov 2018 | 22 Jan 2020 | British | 50 years |
| Andrew James Morrish | Director | 8 Nov 2018 | 23 Mar 2021 | British | 58 years |
| Aviva Company Secretarial Services Limited | Corporate Director | 22 Jun 2006 | 29 Sept 2006 | United Kingdom | - |
| Aviva Director Services Limited | Corporate Director | 22 Jun 2006 | 29 Sept 2006 | - | - |
| Bridget Fiona Mcintyre | Director | 23 Sept 2002 | 9 Jun 2005 | British | 65 years |
| Bruce Forbes | Director | 13 Aug 1999 | 30 Jun 2000 | British | 69 years |
| Bryan Peter Jenkins | Director | 1 Nov 2000 | 5 Aug 2002 | British | 71 years |
| Caroline Francis Ramsay | Director | 23 Jan 2004 | 26 Apr 2004 | British | 64 years |
| Cathryn Elizabeth Riley | Director | 5 Aug 2002 | 1 Jul 2003 | British | 64 years |
| Christopher William Duffy | Nominee Director | 24 Jun 1992 | 5 Aug 1992 | British | 69 years |
| Clyde Secretaries Limited | Corporate Secretary | 24 Jun 1992 | 5 Aug 1992 | United Kingdom | - |
| Clyde Secretaries Limited | Corporate Secretary | 3 Sept 1992 | 27 Jun 1997 | United Kingdom | - |
| David Ernest Parker | Secretary | 14 Aug 1997 | 27 May 1999 | British | - |
| David John Ramsay Mcmillan | Director | 29 Sept 2006 | 23 Aug 2010 | British | 60 years |
| Diane Margaret Thirkettle | Secretary | 28 May 1999 | 29 Sept 2000 | British | - |
| Dominic John Clayden | Director | 20 Dec 2011 | 4 Dec 2013 | British | 60 years |
| James Allen Newman | Director | 22 Dec 1998 | 30 Sept 1999 | British | 62 years |
| Janice Deakin | Director | 1 Apr 2010 | 13 Aug 2013 | British | 59 years |
| Jim Mckay | Director | 14 Aug 1997 | 22 Dec 1998 | British | 69 years |
| John Robert Kitson | Director | 23 Sept 2002 | 15 Jul 2003 | British | 66 years |
| John Robert Kitson | Director | 7 Jul 2008 | 25 Mar 2010 | British | 66 years |
| John Seaton | Director | 29 Sept 2006 | 24 Apr 2008 | British | 68 years |
| Jonathan Marsh | Director | 22 Jan 2020 | 14 Sept 2021 | British | 36 years |
| Marcus Ashley Aldren | Director | 3 May 2011 | 18 Sept 2012 | British | 61 years |
| Mark Steven Hodges | Director | 1 Jul 2003 | 22 Jun 2006 | British | 61 years |
| Mary Elizabeth Ward | Secretary | 27 Jun 1997 | 13 Aug 1997 | British | - |
| Nigel Sinclair Meyer | Director | 2 Oct 2007 | 9 Jul 2008 | British | 59 years |
| Patrick Joseph Edward Smith | Director | 27 Jun 1997 | 12 Aug 1999 | British | 77 years |
| Patrick Joseph Robert Snowball | Director | 1 Jul 2003 | 22 Jun 2006 | British | 76 years |
| Philip Charles Easter | Director | 9 Jun 2005 | 22 Jun 2006 | British | 73 years |
| Philip Spencer Bayles | Director | 13 Aug 2013 | 8 Nov 2018 | British | 59 years |
| Richard Harold Spicker | Director | 7 Jul 2008 | 3 May 2011 | British | 71 years |
| Robert Ian Leyman Townend | Director | 4 Dec 2013 | 8 Nov 2018 | British | 59 years |
| Robin Lloyd Spencer | Director | 19 Nov 1999 | 1 Nov 2000 | British | 56 years |
| Roderick Warren Redding | Director | 5 Aug 1992 | 27 Jun 1997 | British | 87 years |
| Scott Egan | Director | 12 Feb 2001 | 17 Feb 2003 | British | 55 years |
| Scott Egan | Director | 29 Sept 2006 | 2 Oct 2007 | British | 55 years |
| Sean Egan | Director | 1 Apr 2010 | 20 Dec 2011 | Irish | 70 years |
| Sean Egan | Director | 1 Jan 2007 | 10 May 2007 | Irish | 70 years |
| Stephen Forder Pond | Director | 8 Nov 2018 | 14 Sept 2021 | British | 57 years |
| Thomas John Henderson | Director | 27 Jun 1997 | 28 Aug 2002 | British | 75 years |
| Timothy Andrew Wood | Director | 27 Jun 1997 | 13 Aug 1997 | British | 64 years |