| Alan Charles Parker | Director | 22 Feb 2000 | 13 Sept 2004 | British | 80 years |
| Alexandra Clare Thomas Hathaway | Director | 10 Jan 2025 | 4 Aug 2025 | British | 52 years |
| Christopher Charles Bevan Rogers | Director | 31 Oct 2006 | 20 Jul 2012 | British | 66 years |
| Christopher James Storey | Director | 5 Feb 1991 | 22 Feb 2000 | British | 82 years |
| Christopher James Storey | Secretary | 5 Feb 1991 | 5 Jul 1999 | British | - |
| Christopher John Denley | Director | 20 Nov 2007 | 1 Feb 2017 | British | 69 years |
| Daren Clive Lowry | Secretary | 26 Jun 2003 | 5 May 2005 | British | - |
| Desmond Louis Mildmay Taljaard | Director | 4 May 2005 | 15 Sept 2006 | British | 65 years |
| Elizabeth Anne Thorpe | Secretary | 26 May 2000 | 30 Jan 2004 | British | - |
| Frank Nicholson | Director | 2 Apr 1998 | 11 Jun 1999 | British | 72 years |
| Graham Windle | Director | 22 Feb 2000 | 31 Oct 2006 | British | 74 years |
| John Alan Coughtrie | Director | 5 May 2005 | 14 Jul 2005 | British | 71 years |
| John Healy | Director | 5 May 2005 | 14 Jul 2005 | American | 67 years |
| Maria Rita Buxton Smith | Secretary | 26 May 2000 | 25 Aug 2002 | British | - |
| Mark Ian Hodgson | Secretary | 5 Jul 1999 | 26 May 2000 | British | - |
| Martin James Grant | Director | 26 Oct 1998 | 2 Feb 1999 | British | 77 years |
| Matthew Yates | Director | 12 Oct 2018 | 10 Jan 2025 | British | 49 years |
| Neal Trevor Gossage | Director | 18 Sept 1996 | 8 Feb 1999 | British | 71 years |
| Patrick Joseph Anthony Dempsey | Director | 13 Sept 2004 | 4 May 2005 | British | 67 years |
| Paul Douglas Nicholson | Director | 5 Feb 1991 | 26 Mar 1999 | British | 88 years |
| Petershill Secretaries Limited | Corporate Secretary | 5 May 2005 | 31 Aug 2006 | United Kingdom | - |
| Robert William Parker | Director | 22 Feb 2000 | 31 Dec 2001 | British | 75 years |
| Russell William Fairhurst | Director | 1 Feb 2017 | 12 Oct 2018 | British | 63 years |
| Simon Charles Barratt | Director | 15 Sept 2006 | 17 Nov 2015 | British | 67 years |
| Steven Peter Lambert | Director | 1 Feb 2002 | 27 Apr 2005 | British | 62 years |
| Stuart William Weeks | Secretary | 30 Jan 2004 | 5 May 2005 | British | - |
| Timothy Graham Walker | Director | 5 Feb 1991 | 1 May 1996 | British | 70 years |
| Timothy Graham Walker | Director | 9 Jun 1999 | 22 Feb 2000 | British | 70 years |
| William Peter Catesby | Director | 5 Feb 1991 | 22 Feb 2000 | British | 86 years |