| TAKK, Amarpal ACTIVE | Secretary | 19 May 2026 | | | | 1, Portal Road, Bowerhill, Melksham, SN12 6GN, England |
| CATTON, Catherine-Mary ACTIVE | Director | 19 May 2026 | | England | July 1977 | 1, Portal Road, Bowerhill, Melksham, SN12 6GN, England |
| RICE, Jacqueline ACTIVE | Director | 19 May 2026 | | United States | January 1972 | 1, Portal Road, Bowerhill, Melksham, SN12 6GN, England |
| WOODBRIDGE, Robert Thomas ACTIVE | Director | 17 Jul 2018 | | United Kingdom | December 1976 | 1, Portal Road, Bowerhill, Melksham, SN12 6GN, England |
| AUDIS, David William RESIGNED | Secretary | 17 Jun 2013 | 19 Oct 2021 | | | 1, Portal Road, Bowerhill, Melksham, SN12 6GN, England |
| BIGNALL, John RESIGNED | Secretary | 08 Mar 2013 | 17 Jun 2013 | | | Methuen Park, Chippenham, Wiltshire, SN14 0GF |
| DE JAEGER, Anthony Ignace Joseph Marie RESIGNED | Secretary | 01 Nov 2005 | 05 Nov 2007 | | | 1 Warminster Road, Beckington, Somerset, BA3 6SP |
| EDE, Joanne Rachel RESIGNED | Secretary | 19 Oct 2021 | 15 Apr 2024 | | | 1, Portal Road, Bowerhill, Melksham, SN12 6GN, England |
| JEFFERSON, Rebecca RESIGNED | Secretary | 21 Feb 2011 | 08 Mar 2013 | | | Methuen Park, Chippenham, Wiltshire, SN14 0GF |
| MARSON, Nina Dawn RESIGNED | Secretary | 05 Nov 2007 | 21 Feb 2011 | | | Methuen Park, Chippenham, Wiltshire, SN14 0GF |
| QUARTLEY, Sarah Jane Mary RESIGNED | Secretary | | 01 Nov 2005 | | | 17 Edward Street, Lower Weston, Bath, Avon, BA1 3BP |
| BIGNALL, John RESIGNED | Director | | 16 Mar 2016 | England | February 1943 | Coombe Farm, Coombe Lane, Naphill, Bucks, HP14 4QR |
| BROSER, Hansjorg RESIGNED | Director | 15 Oct 1992 | 03 Apr 1996 | | January 1941 | 8/10 Rue Oswaldo-Cruz, 75116 Paris, FOREIGN, France |
| CHRISTENSON, James Edward RESIGNED | Director | 12 May 1994 | 31 May 1997 | Usa | January 1947 | 915 San Jose Drive, East Grand Rapids, Michigan, 49506, Usa |
| COX, Steven Mark RESIGNED | Director | 06 Apr 1998 | 31 Aug 2009 | | April 1965 | Oakvale 2 The Old Batch, Bradford On Avon, Wiltshire, BA15 1TL |
| DE JAEGER, Anthony Ignace Joseph Marie RESIGNED | Director | 22 Aug 2006 | 15 Sep 2014 | England | May 1964 | Methuen Park, Chippenham, Wiltshire, SN14 0GF |
| DEVILLERS, Carla Ellen RESIGNED | Director | 01 Nov 1994 | 02 Sep 1995 | | April 1963 | 1 Rue Jacques Offenbach, Paris, 75016, France |
| FREY, Robert Imbrie RESIGNED | Director | 01 Dec 1997 | 31 Dec 2001 | | July 1943 | 2276 Tunnel Breeze Court, Holland Michigan 49424 Ottawa, United States America, FOREIGN |
| GINGRAS, Kevin David RESIGNED | Director | 14 Sep 2014 | 17 Jul 2018 | United States | October 1978 | Methuen Park, Chippenham, Wiltshire, SN14 0GF |
| HOCKING, Jeremy John RESIGNED | Director | 17 Jul 2018 | 30 Jul 2021 | England | March 1961 | 1, Portal Road, Bowerhill, Melksham, SN12 6GN, England |
| HOCKING, Jeremy John RESIGNED | Director | 06 Apr 1998 | 15 Mar 2011 | Hong Kong | March 1961 | Methuen Park, Chippenham, Wiltshire, SN14 0GF |
| ILES, Paul RESIGNED | Director | 01 Aug 1997 | 05 Oct 2009 | | January 1961 | 1863 Golden Eye, Holland, Michigan, 49424, Usa |
| JANSMA, Jeff RESIGNED | Director | 01 Dec 2003 | 22 Aug 2006 | | April 1963 | Hillcote, Box Hill, Corsham, Wiltshire, SN13 8EX |
| JOUANNE, Ruth RESIGNED | Director | 01 Feb 1996 | 31 May 1997 | | August 1953 | 50 Rue Dauteuil, Paris, 75016, France |
| KNIGHT, Michael James Watson RESIGNED | Director | | 21 Apr 2003 | | April 1950 | 53 Englishcombe Lane, Bath, Avon, BA2 2EE |
| LOCK, Andrew John RESIGNED | Director | 01 Jun 2010 | 17 Jul 2018 | United States | April 1954 | Methuen Park, Chippenham, Wiltshire, SN14 0GF |
| LOCK, Andrew John RESIGNED | Director | 01 Nov 1993 | 31 May 1997 | | April 1954 | 22 High Street, Chipping Sodbury, Bristol, BS17 6AH |
| MCGREGOR, Andrew Campbell RESIGNED | Director | | 07 Oct 1992 | | December 1940 | 20 Rue Chalgrin, Paris 75116, FOREIGN, France |
| PEARCE, Michael RESIGNED | Director | 10 Jul 2000 | 30 Sep 2016 | England | February 1953 | Methuen Park, Chippenham, Wiltshire, SN14 0GF |
| PORTLOCK, John Paul RESIGNED | Director | | 06 Apr 2010 | United Kingdom | June 1946 | Methuen Park, Chippenham, Wiltshire, SN14 0GF |
| REED, James David RESIGNED | Director | | 27 Oct 1993 | | November 1938 | 19 Henrietta Street, Bath, Avon, BA2 6LW |
| SHETHIA, Kartik Kishore RESIGNED | Director | 30 Jul 2021 | 19 May 2026 | Hong Kong | June 1971 | 1, Portal Road, Bowerhill, Melksham, SN12 6GN, England |
| STUTZ, Jeffrey RESIGNED | Director | 13 Aug 2018 | 19 May 2026 | United States | December 1970 | 1, Portal Road, Bowerhill, Melksham, SN12 6GN, England |
| WALKER, Brian Christopher RESIGNED | Director | 01 Jun 1996 | 17 Jul 2018 | United Kingdom | December 1961 | 2684 Gullmont Drive Sw, Grandville, Michigan 49418, United States |
| WALKER, Brian Christopher RESIGNED | Director | 20 Jul 1992 | 01 Oct 1994 | | December 1961 | Circus Cottage Circus Place, Bath, Avon, BA1 2PG |
| WILLIAMS, Joanne Margaret RESIGNED | Director | 30 Sep 2009 | 20 Feb 2025 | United Kingdom | February 1965 | 1, Portal Road, Bowerhill, Melksham, SN12 6GN, England |
| WOOD, Robert John RESIGNED | Director | | 31 May 2009 | | August 1945 | Dolphin House, Freshford, Bath, Avon, BA3 6DG |