| Alex Stephen Gwyther | Director | 17 May 2024 | 17 Sept 2025 | British | 36 years |
| Andre Kobelt | Director | 19 Nov 2014 | 20 Jan 2016 | Swiss | 65 years |
| Andrew Roger Williamson | Director | 20 Jan 2016 | 1 Jan 2019 | British | 53 years |
| Ashley Stephen Charles Cooper | Director | 8 Jul 2013 | 30 May 2014 | British | 66 years |
| Catherine Susan Minshull-beech | Director | 8 Jul 2013 | 10 Oct 2019 | British | 69 years |
| Igp Corporate Nominees Ltd | Corporate Nominee Secretary | 20 Apr 2001 | 20 Apr 2001 | - | - |
| Kevin Morris Shakesheff | Director | 20 Apr 2001 | 31 Mar 2025 | British | 57 years |
| Martyn Davies | Director | 20 Apr 2001 | 12 Apr 2005 | British | 69 years |
| Mercia Fund Management (nominees) Limited | Corporate Director | 3 Apr 2018 | 29 Jan 2020 | United Kingdom | - |
| Michael Leek | Director | 1 Nov 2007 | 10 Dec 2008 | British | 66 years |
| Nicholas James Staples | Director | 26 Nov 2018 | 26 Feb 2020 | British | 56 years |
| Nikin Patel | Director | 20 Apr 2001 | 30 Sept 2014 | British | 54 years |
| Nikin Patel | Secretary | 20 Apr 2001 | 29 Mar 2005 | British | - |
| Paul Bernard Harper | Director | 30 Jun 2004 | 12 May 2014 | British | 80 years |
| Peter Michael Dines | Director | 29 Jan 2020 | 17 May 2024 | British | 53 years |
| Robin Andrew Quirk | Director | 1 Mar 2002 | 25 Jul 2019 | British | 51 years |
| Sandra Downes | Director | 23 Mar 2006 | 30 Apr 2009 | British | 69 years |
| Saul Jonathan Benjamin Tendler | Director | 20 Apr 2001 | 1 Dec 2001 | British | 65 years |
| Stephen Hugh Jones | Director | 29 Mar 2005 | 31 Jan 2017 | British | 74 years |
| Stephen Hugh Jones | Secretary | 29 Mar 2005 | 11 May 2014 | British | - |
| Steven Melvyn Howdle | Director | 1 Apr 2003 | 1 Mar 2005 | British | 62 years |
| Sue Goldsborough | Director | 29 Mar 2005 | 16 Sept 2011 | British | 67 years |
| Thomas Kluge | Director | 1 Jan 2019 | 6 Aug 2021 | German | 59 years |
