| SEABROOK, Michael William Peter ACTIVE | Secretary | 03 Aug 2020 | | | | 350, Longwater Avenue, Green Park, Reading, Berkshire, RG2 6GF, England |
| ELLISS, Robert John, Dr ACTIVE | Director | 01 Apr 2020 | | England | October 1968 | 350, Longwater Avenue, Green Park, Reading, Berkshire, RG2 6GF, England |
| MUSE, James Samuel ACTIVE | Director | 01 Apr 2025 | | Northern Ireland | June 1983 | 350, Longwater Avenue, Green Park, Reading, Berkshire, RG2 6GF, England |
| STRATTON, Suzanne Jayne ACTIVE | Director | 29 Mar 2023 | | United Kingdom | May 1972 | 350, Longwater Avenue, Green Park, Reading, Berkshire, RG2 6GF, England |
| CANDAU, Olivier RESIGNED | Secretary | 03 Dec 2001 | 16 Mar 2004 | | | 15 Rue Houdan, Sceaux, 92330, France |
| HICKS, Kevin Lonn RESIGNED | Secretary | 05 Feb 2014 | 10 Mar 2015 | | | 3 Meadows Business Park, Station Approach, Blackwater, Camberley, Surrey, GU17 9AB |
| HICKS, Kevin Lonn RESIGNED | Secretary | 16 Mar 2004 | 23 Apr 2013 | | | 302 Woodward Road, Moylan, Pennsylvania, 19065, Usa |
| SMITH, Christopher Winston RESIGNED | Secretary | | 18 Feb 1993 | | | 7 The Avenue, Sneyd Park, Bristol, BS9 1PD |
| WATSON, Thomas RESIGNED | Secretary | 18 Feb 1993 | 03 Dec 2001 | | | 6 Meadow Way, Blackwater, Camberley, Surrey, GU17 0PT |
| ARGO, Carole RESIGNED | Director | 16 Mar 2004 | 17 Oct 2006 | | April 1961 | 209 E Highfield Road, Baltimore, Maryland 21218, Usa |
| BARKHORDARI, Roozbeh Babak RESIGNED | Director | 01 Oct 2007 | 23 Apr 2013 | United Kingdom | April 1971 | 49b Upcerne Road, London, SW10 0SF |
| CAPUTO, Anthony RESIGNED | Director | 16 Mar 2004 | 17 Oct 2006 | | September 1941 | 1280 Continental Line Lane, West Chester, Pennsylvania 19382 |
| CLARK, Gary Alfred RESIGNED | Director | 01 Oct 2013 | 31 Mar 2020 | England | May 1954 | 350, Longwater Avenue, Green Park, Reading, Berkshire, RG2 6GF, England |
| CLARK, Gary Alfred RESIGNED | Director | 25 Aug 2005 | 23 Apr 2013 | England | May 1954 | 202 Greys Road, Henley On Thames, Oxfordshire, RG9 1QX |
| FEDDE, Chris Steven RESIGNED | Director | 04 May 2007 | 12 Dec 2012 | Usa | February 1951 | 125 Theodora Court, Forest Hill, Maryland, 21050, Usa |
| FEVERY, Patrick RESIGNED | Director | 23 Dec 1992 | 16 Mar 2004 | | December 1955 | 24642 Via Del Rio, Lake Forest, California 92630, Usa |
| FREDERICK, John Wilbert RESIGNED | Director | 17 Oct 2006 | 04 May 2007 | | October 1963 | 6743 Royal Orchard Circle, Delray Beach, Florida 33446/4338, Usa |
| GOWER-SMITH, Robert Geoffrey RESIGNED | Director | | 23 Dec 1992 | England | August 1946 | 14 Romanhurst Gardens, Shortlands, Bromley, Kent, BR2 0PA |
| HANSEN, Lawrence David RESIGNED | Director | 13 Dec 2012 | 11 Jun 2014 | United States | September 1964 | 3 Meadows Business Park, Station Approach, Blackwater, Camberley, Surrey, GU17 9AB |
| LEWIS, Raymond RESIGNED | Director | | 31 Dec 1993 | | November 1948 | 5 Laburnham Road, Maidenhead, Berkshire, SL6 4DB |
| LYON, Valerie RESIGNED | Director | 25 Jun 2015 | 31 Aug 2021 | England | September 1965 | 350, Longwater Avenue, Green Park, Reading, Berkshire, RG2 6GF, England |
| MADSEN-OESTERBYE, Christen RESIGNED | Director | 17 Oct 2006 | 28 Sep 2007 | | October 1967 | 17 Thorpe Road, Staines, Middlesex, TW18 3EB |
| MILLS, Andrew Mason RESIGNED | Director | 31 Aug 2021 | 29 Mar 2023 | England | February 1969 | 350, Longwater Avenue, Green Park, Reading, Berkshire, RG2 6GF, England |
| PANJWANI, Prakash RESIGNED | Director | 23 Jun 2014 | 10 Apr 2015 | Usa | June 1969 | 3 Meadows Business Park, Station Approach, Blackwater, Camberley, Surrey, GU17 9AB |
| STRAUB, Walter William RESIGNED | Director | 17 Oct 2006 | 04 May 2007 | | June 1943 | 18011a Mitchell South, Irvine, California Ca92174, Usa |
| STRAUB, Walter William RESIGNED | Director | | 16 Mar 2004 | | June 1943 | 18011a Mitchell South, Irvine, California Ca92174, Usa |
| WEINGARTNER, Alfred Raymond RESIGNED | Director | | 10 Mar 1993 | | August 1943 | 17085 1st Avenue, Arcadia, California Ca91006, FOREIGN, Usa |