| Andrew William Fielder | Director | 12 Aug 2002 | 22 Jan 2005 | British | 77 years |
| David Alexander Grant | Director | 15 Jul 2011 | 2 Dec 2016 | British | 60 years |
| David Harvey Gibson | Director | 13 Feb 2002 | 12 Aug 2002 | British | 76 years |
| David James Blott | Director | 6 Jan 2020 | 7 Feb 2023 | British | 42 years |
| Dws Directors Limited | Corporate Nominee Director | 10 Dec 2001 | 13 Feb 2002 | - | - |
| Dws Secretaries Limited | Corporate Nominee Secretary | 10 Dec 2001 | 13 Feb 2002 | - | - |
| Hugh Douglas Charles Stebbing | Director | 8 Feb 2005 | 30 Jan 2009 | British | 76 years |
| James Coyle | Director | 15 Jul 2011 | 30 Apr 2015 | British | 69 years |
| Joanne Palmer | Director | 2 Dec 2016 | 23 Dec 2019 | British | 57 years |
| John Ronald Pike | Director | 16 Feb 2009 | 23 Apr 2009 | British | 76 years |
| Jorgen Svedin | Director | 13 Feb 2002 | 12 Aug 2002 | Swedish | 79 years |
| Malcolm Kevin Beadle | Director | 12 Aug 2002 | 2 Jan 2009 | British | 69 years |
| Nigel Peter Waring | Director | 16 Feb 2009 | 19 Jul 2011 | British | 70 years |
| Paul William Baker | Director | 29 Apr 2009 | 19 Jul 2011 | British | 69 years |
| Pradip Banerjee | Director | 13 Feb 2002 | 12 Aug 2002 | British | 81 years |
| Pradip Banerjee | Secretary | 13 Feb 2002 | 12 Aug 2002 | British | - |
| Stephen John Hopkins | Secretary | 12 Aug 2002 | 28 Feb 2010 | British | - |