| David Nicholas Clay | Director | 1 Oct 2008 | 30 Jun 2013 | British | 82 years |
| Davies Wallis Foyster Limited | Corporate Director | 23 Jul 2007 | 22 Feb 2019 | United Kingdom | - |
| Eric Andrew Needham | Director | 1 Oct 2008 | 28 Feb 2011 | British | 76 years |
| Francis James Shephard | Director | 7 Apr 2011 | 4 Dec 2023 | British | 57 years |
| Katharine Margaret Mellor | Director | 1 Oct 2008 | 30 Jun 2013 | British | 77 years |
| Laurence Patrick Pritchard | Director | 1 Oct 2008 | 31 Dec 2011 | British | 68 years |
| Nigel Graham Knowles | Director | 4 Dec 2023 | 13 Jun 2025 | British | 70 years |
| Paul Gerard Attwood | Director | 1 Oct 2008 | 22 Oct 2020 | British | 68 years |
| Paula Jane Smith | Director | 1 Oct 2008 | 26 Feb 2010 | British | 55 years |
| Susan Kim Parker | Director | 1 Oct 2008 | 8 Sept 2010 | British | 69 years |