| CASEY, Julia Elizabeth ACTIVE | Director | 15 Jan 2019 | | United Kingdom | September 1980 | Pollards Wood, Nightingales Lane, Chalfont St. Giles, Buckinghamshire, HP8 4SP, United Kingdom |
| MILLER, Rowena Gillian ACTIVE | Director | 12 Jul 2022 | | United Kingdom | June 1978 | Pollards Wood, Nightingales Lane, Chalfont St. Giles, Buckinghamshire, HP8 4SP, United Kingdom |
| COOPER, Julian Alfred RESIGNED | Secretary | 15 Jul 1997 | 08 Apr 2004 | | | The Old Farm, Bishopstone, Aylesbury, Bucks, HP17 8SH |
| HOOD, Daniel Carey Cazel RESIGNED | Secretary | 23 Jan 2008 | 05 Jan 2010 | | | Pollards Wood, Nightingales Lane, Chalfont St. Giles, Buckinghamshire, HP8 4SP |
| KERR, Giles Francis Bertram RESIGNED | Secretary | 10 Jun 1997 | 17 Jul 1997 | | | 6 The Croft, Haddenham, Aylesbury, Buckinghamshire, HP17 8AS |
| QURESHI, Shakaib RESIGNED | Secretary | 09 Jan 2012 | 26 Jun 2012 | | | Pollards Wood, Nightingales Lane, Chalfont St. Giles, Buckinghamshire, HP8 4SP, United Kingdom |
| REES, Thomas Oliver Vaughan RESIGNED | Secretary | 06 Jan 2010 | 09 Jan 2012 | | | Pollards Wood, Nightingales Lane, Chalfont St. Giles, Buckinghamshire, HP8 4SP, United Kingdom |
| REES, Thomas Oliver Vaughan RESIGNED | Secretary | 16 Oct 2007 | 22 Jan 2008 | | | Pollards Wood, Nightingales Lane, Chalfont St Giles, Buckinghamshire, HP8 4SP |
| SOLMSSEN, Peter RESIGNED | Secretary | 08 Apr 2004 | 16 Oct 2007 | | | Link House, St Mary's Way, Chesham, Buckinghamshire, HP5 1HR |
| BATTERSBY, George William RESIGNED | Director | 01 Jul 2001 | 08 Apr 2004 | | August 1946 | 7th Floor The Point, 37 North Wharf Road, London, W2 1LA |
| CARTIE, Sandra RESIGNED | Director | 01 Jul 2001 | 07 Feb 2003 | | January 1960 | 28 Porchuck Road, Greenwich, Ct 06831, America |
| CASTELL, William Martin, Sir RESIGNED | Director | 10 Jun 1997 | 08 Apr 2004 | | April 1947 | 102 Ebury Mews, London, SW1W 9NX |
| COUGHLIN, Christopher James RESIGNED | Director | 10 Jul 2000 | 31 Mar 2002 | | July 1952 | 28 Old Harter Road, Morristown, Nj 07960, Usa |
| CRUMPTON, Michael Joseph, Dr RESIGNED | Director | 02 Aug 1997 | 30 Jun 2002 | | June 1929 | 33 Homefield Road, Radlett, Hertfordshire, WD7 8PX |
| DISHMAN, Stephen RESIGNED | Director | 17 Apr 2012 | 18 Apr 2013 | United Kingdom | January 1970 | Pollards Wood, Nightingales Lane, Chalfont St. Giles, Buckinghamshire, HP8 4SP, United Kingdom |
| FORSELL, Kurt Arne RESIGNED | Director | 02 Aug 1997 | 01 Mar 2001 | | July 1942 | Ortagardsvaen 6, Saltsjobaden, Sweden, SE 13334 |
| HOOD, Daniel Carey Cazel RESIGNED | Director | 23 Jan 2008 | 05 Jan 2010 | Uk | January 1973 | Pollards Wood, Nightingales Lane, Chalfont St. Giles, Buckinghamshire, HP8 4SP |
| HUTTON, Christopher James RESIGNED | Director | 20 Dec 2010 | 05 Apr 2012 | United Kingdom | December 1981 | The Grove Centre, White Lion Road, Amersham, Buckinghamshire, HP7 9LL, United Kingdom |
| JONES, Katherine Ann RESIGNED | Director | 15 Jun 2018 | 03 Mar 2020 | United Kingdom | October 1976 | Pollards Wood, Nightingales Lane, Chalfont St. Giles, Buckinghamshire, HP8 4SP, United Kingdom |
| KERR, Giles Francis Bertram RESIGNED | Director | 15 Jul 1997 | 08 Apr 2004 | | July 1959 | Chilcote House, White Lion Road, Amersham, Buckinghamshire, HP7 9LL |
| KILROY, Thomas Edward RESIGNED | Director | 04 Oct 2004 | 12 Dec 2005 | | April 1970 | Pollards Wood, Nightingales Lane, Chalfont St Giles, Buckinghamshire, HP8 4SB |
| KISSANE, Kevin Patrick RESIGNED | Director | 08 Apr 2004 | 04 Oct 2004 | | April 1955 | 7 Peterborough Road, London, SW6 3BT |
| LIGHTFOOT, Stephen RESIGNED | Director | 28 May 2010 | 28 Mar 2013 | England | December 1961 | The Grove Centre, White Lion Road, Amersham, Buckinghamshire, HP7 9LL, United Kingdom |
| LONG, Gareth Charles RESIGNED | Director | 08 Apr 2004 | 26 Jan 2009 | | January 1962 | Pollards Wood, Nightingales Lane, Chalfont St Giles, Buckinghamshire, HP8 4SP |
| LONG, Ronald Eric RESIGNED | Director | 10 Jun 1997 | 23 Mar 2001 | | January 1947 | 52 Magnolia Dene, Hazlemere, High Wycombe, Buckinghamshire, HP15 7QE |
| MACMILLAN, Stephen Paul RESIGNED | Director | 01 Jan 2001 | 21 Mar 2002 | | July 1963 | 502 Wheatfield Ln, Newtown, Pa 18940, Usa |
| MOENCH, Theresa RESIGNED | Director | 28 Mar 2013 | 20 Dec 2018 | United States | July 1962 | Pollards Wood, Nightingales Lane, Chalfont St Giles, Buckinghamshire, HP8 4SP, United Kingdom |
| NARAYAN, Adrian Ashwin RESIGNED | Director | 03 Mar 2020 | 30 Jun 2022 | United Kingdom | October 1973 | Pollards Wood, Nightingales Lane, Chalfont St. Giles, Buckinghamshire, HP8 4SP, United Kingdom |
| O'NEILL, Kevin Michael RESIGNED | Director | 18 Apr 2013 | 19 Sep 2013 | England | December 1968 | The Grove Centre, White Lion Road, Amersham, Buckinghamshire, HP7 9LL, England |
| PAGE, Nicholas William RESIGNED | Director | 11 Jun 2010 | 20 Dec 2010 | United Kingdom | June 1962 | The Grove Centre, White Lion Road, Amersham, Buckinghamshire, HP7 9LL, United Kingdom |
| PARFET, Donald Reid RESIGNED | Director | 02 Aug 1997 | 10 Jul 2000 | | September 1952 | 4841 Ridgewood Drive, Richland, Michigan, MI 49083 |
| PARKINSON, Henry Butler RESIGNED | Director | 12 Dec 2005 | 31 Dec 2006 | | October 1965 | 5 Ashridge Cottages, Little Gaddesden, Herts, HP4 1PW |
| PETTERSON, Mats Gunnar RESIGNED | Director | 02 Aug 1997 | 01 Jan 2001 | | November 1945 | Oaklands, Kier Park, Ascot, Berkshire, SL5 7DS |
| REES, Thomas Oliver Vaughan RESIGNED | Director | 06 Jan 2010 | 11 Jun 2010 | Turkey | January 1973 | Pollards Wood, Nightingales Lane, Chalfont St. Giles, Buckinghamshire, HP8 4SP, United Kingdom |
| REES, Thomas Oliver Vaughan RESIGNED | Director | 01 Jan 2007 | 22 Jan 2008 | Turkey | January 1973 | Pollards Wood, Nightingales Lane, Chalfont St Giles, Buckinghamshire, HP8 4SP |
| TAYLOR, Stephen Joseph RESIGNED | Director | 19 Sep 2013 | 15 Jun 2018 | United Kingdom | January 1963 | The Grove Centre, White Lion Road, Amersham, Buckinghamshire, HP7 9LL, England |
| UHLEN, Mathias, Professor RESIGNED | Director | 02 Aug 1997 | 08 May 2002 | | May 1954 | Masvagen 8b, S-183 57 Taby, Sweden |
| WILKINSON, Martin Charles RESIGNED | Director | 20 Nov 2008 | 28 May 2010 | United Kingdom | June 1958 | 23 Churchway, Haddenham, Buckinghamshire, HP17 8AB |