| Andrew Mark Egerton Barlow | Director | 28 Nov 2011 | 30 Jan 2015 | British | 54 years |
| Christine Milne | Director | 30 Jan 2015 | 23 Oct 2015 | British | 54 years |
| Christopher Mark Sills | Director | 1 Jul 2002 | 10 Nov 2005 | British | 62 years |
| Christopher Paul Williams | Director | 1 Apr 1997 | 1 Jul 2002 | British | 69 years |
| David Leonard Grose | Director | 23 Oct 2015 | 31 Jan 2018 | British | 50 years |
| David William Burrowes | Director | 2 May 2006 | 31 Jan 2008 | British | 61 years |
| Dennis Charles Pratt | Secretary | 31 Jan 1993 | 15 Nov 1995 | British | - |
| Gavin Andrew Lewis | Director | 31 Oct 2003 | 2 May 2006 | British | 52 years |
| Gavin Arthur Davidson | Director | 31 Jan 1993 | 30 Jun 2003 | British | 73 years |
| Iain Russell Watters | Director | 31 Jan 1993 | 10 Mar 2000 | British | 78 years |
| Ian Michael Laing | Director | N/A | 8 May 2006 | British | 80 years |
| James Anthony Dipple | Director | 6 May 1997 | 31 Oct 2002 | British | 70 years |
| James Lane Tuckey | Director | 31 Jan 1993 | 31 May 1999 | British | 80 years |
| James Michael Brady | Director | 1 Oct 2003 | 29 Sept 2006 | British | 73 years |
| John Anthony Bateman | Director | 20 Jan 1994 | 6 Jun 1996 | British | 68 years |
| John Anthony Bateman | Director | 10 Mar 2000 | 7 Feb 2007 | British | 68 years |
| John Dewi Brychan Price | Director | 1 Aug 1997 | 31 Dec 2001 | British | 71 years |
| John Dewi Brychan Price | Secretary | 15 Nov 1995 | 31 Dec 2001 | British | - |
| John Philip Macarthur Lee | Director | 31 Jan 1993 | 1 Aug 1997 | British | 80 years |
| John Philip Macarthur Lee | Secretary | 31 Jan 1993 | 1 Aug 1997 | British | - |
| Jonathan Henry Cheshire Walsh | Director | 1 Jun 2010 | 29 Sept 2014 | British | 57 years |
| Kevin Peter Monaghan | Director | 14 Sept 1995 | 10 Mar 2000 | British | 69 years |
| Mepc Secretaries Limited | Corporate Secretary | 31 Dec 2001 | 31 Jan 2018 | United Kingdom | - |
| Nicholas John Cross | Director | 31 Jan 1993 | 21 Mar 2006 | British | 79 years |
| Nigel Robin Griffiths | Director | 25 Jun 1996 | 21 Feb 1997 | British | 75 years |
| Peter Andrew Batchelor | Director | 31 Oct 2002 | 30 Sept 2003 | British | 63 years |
| Rachel Page | Director | 6 Apr 2006 | 30 Apr 2015 | British | 60 years |
| Richard Anthony Harrold | Director | 30 Jun 2003 | 8 Dec 2005 | British | 80 years |
| Richard Armand De Blaby | Director | 6 Apr 2006 | 1 Apr 2014 | British | 66 years |
| Richard John Exley | Director | 10 Mar 2000 | 31 Oct 2003 | British | 61 years |
| Richard Mark Shaw | Director | 31 Dec 2001 | 17 Feb 2006 | British | 58 years |