| Alison Ann Hargreaves | Secretary | 28 Oct 1997 | 13 Aug 1999 | British | - |
| Caroline Mary Tolhurst | Secretary | 13 Aug 1999 | 1 Jul 2008 | British | - |
| Christopher James Jukes | Director | 13 Feb 2013 | 31 Oct 2013 | British | 48 years |
| Christopher Millard | Director | 9 Mar 2011 | 10 Apr 2012 | British | 57 years |
| Douglas Robert Jan De Broekert | Director | 28 Oct 1997 | 31 Dec 1998 | British | 87 years |
| Drusilla Charlotte Jane Rowe | Nominee Director | 22 Jul 1997 | 28 Oct 1997 | British | 65 years |
| Eleanor Jane Zuercher | Nominee Director | 22 Jul 1997 | 28 Oct 1997 | British | 63 years |
| George Ian Macloy Cockburn | Director | 28 Oct 1997 | 31 Dec 1997 | British | 81 years |
| Jeremy Henry Moore Newsum | Director | 28 Oct 1997 | 10 Apr 2000 | British | 71 years |
| Jonathan Osborne Hagger | Director | 28 Oct 1997 | 10 Apr 2000 | British | 77 years |
| Katharine Emma Robinson | Secretary | 1 Jul 2008 | 9 Mar 2011 | British | - |
| Leonie Watson-brock | Secretary | 9 Mar 2011 | 20 Sept 2013 | - | - |
| Mark Robin Preston | Director | 30 Jun 2006 | 30 Jun 2008 | British | 58 years |
| Mervyn Howard | Director | 9 Mar 2011 | 13 Feb 2013 | British | 67 years |
| Nicholas Oliver Preston | Director | 10 Oct 2012 | 31 Jan 2016 | British | 58 years |
| Peter Sean Vernon | Director | 1 Jul 2008 | 9 Mar 2011 | British | 67 years |
| Raymond Charles Williams | Director | 10 Apr 2000 | 31 Mar 2009 | British | 73 years |
| Richard Brian Mallett | Director | 9 Mar 2011 | 13 Feb 2013 | British | 59 years |
| Richard Brian Mallett | Director | 19 Jul 2013 | 5 Aug 2013 | British | 59 years |
| Richard Brian Mallett | Director | 19 Aug 2013 | 27 Aug 2013 | British | 59 years |
| Richard Brian Mallett | Director | 17 May 2019 | 27 Jul 2021 | British | 59 years |
| Richard Simon Handley | Director | 10 Apr 2000 | 3 Apr 2008 | British | 72 years |
| Robert Richard Davis | Director | 9 Mar 2011 | 17 May 2019 | British | 59 years |
| Roger Frederick Crawford Blundell | Director | 3 Apr 2008 | 9 Mar 2011 | British | 64 years |
| Scott Mark Rowland | Director | 10 Apr 2012 | 10 Oct 2012 | British | 62 years |
| Sebastien Dominique Hyest | Director | 13 Feb 2013 | 8 Oct 2015 | French | 53 years |
| Stephen Howard Rhodes Musgrave | Director | 10 Apr 2000 | 30 Jun 2006 | British | 73 years |
| Trusec Limited | Corporate Nominee Secretary | 22 Jul 1997 | 28 Oct 1997 | United Kingdom | - |
| Ulrike Schwarz-runer | Director | 1 Feb 2011 | 9 Mar 2011 | Austrian | 55 years |
| Virginia Duncan | Secretary | 20 Sept 2013 | 19 Feb 2014 | - | - |