| ATHWAL, Mahan ACTIVE | Secretary | 02 Aug 2016 | | | | Park View, Watchmoor Park, Camberley, Surrey, GU15 3YL, United Kingdom |
| CROWLEY-LUKE, Annette ACTIVE | Director | 01 Feb 2023 | | United Kingdom | June 1970 | Park View, Watchmoor Park, Camberley, Surrey, GU15 3YL, United Kingdom |
| KABRA, Manish ACTIVE | Director | 01 Sep 2023 | | England | January 1983 | Park View, Watchmoor Park, Camberley, Surrey, GU15 3YL, United Kingdom |
| BIRD, Jane RESIGNED | Secretary | 15 Nov 1995 | 21 Jan 1999 | | | Waen Glanyrafon Road, Llanfairfechan, Gwynedd, LL33 0EY |
| BRITTON, Stephen Gallagher RESIGNED | Secretary | 21 Apr 1995 | 15 Nov 1995 | | | Chelfont House, 24 Lache Lane, Chester, Cheshire, CH4 7LR |
| CARLESS, Helen Claire RESIGNED | Secretary | 01 Feb 2012 | 01 Aug 2016 | | | Faraday House, Sir William Siemens Square, Frimley, Camberley, Surrey, GU16 8QD, United Kingdom |
| DONALDSON, Stella Margaret RESIGNED | Secretary | 01 Sep 1993 | 21 Apr 1995 | | | Chimney Corner, Castle Street, Beaumaris, Gwynedd, LL58 8BB |
| GENT, Gerard Thomas RESIGNED | Secretary | 02 Sep 2011 | 31 Jan 2012 | | | Glyn Rhonwy, Llanberis, Gwynedd, LL55 4EL |
| MOORE, Robert Andrew, Dr RESIGNED | Secretary | | 01 Sep 1993 | | | April Cottage, Noke, Oxford, Oxfordshire, OX3 9TX |
| OWEN, Judy Ann RESIGNED | Secretary | 19 Apr 1999 | 31 Aug 2011 | | | Glyn Rhonwy, Llanberis, Gwynedd, LL55 4EL |
| ARNOLD, Nicolaas RESIGNED | Director | 13 Aug 2007 | 30 Sep 2009 | | May 1951 | The Bailey Apartment, 14 Sutton Castle Red Rock, Sutton, Dublin 13, IRISH, Ireland |
| AROESTY, Sidney Albert, Dr RESIGNED | Director | | 30 Sep 1994 | | November 1946 | 4000 Batris Court, Calabasas, California 91302, Usa |
| BIRD, Jane RESIGNED | Director | 14 Jan 1998 | 21 Jan 1999 | | June 1958 | Waen Glanyrafon Road, Llanfairfechan, Gwynedd, LL33 0EY |
| BOCKSERMAN, Julian Ross RESIGNED | Director | 30 Sep 1994 | 28 Oct 1999 | | June 1936 | 4330 Rousseau Lane, Palos Verdes Peninsula, California, CA 90274, Usa |
| BRILL, James Lathrop RESIGNED | Director | 28 Oct 1999 | 02 Apr 2007 | United States | April 1951 | 550 Frontera Drive, Pacific Palisades, California 90272, Usa |
| BRITTON, Stephen Gallagher RESIGNED | Director | 13 Sep 1993 | 12 Jul 2010 | United Kingdom | June 1952 | Chelfont House, 24 Lache Lane, Chester, Cheshire, CH4 7LR |
| CARLESS, Helen Claire RESIGNED | Director | 01 Feb 2012 | 17 Sep 2013 | Berkshire | March 1962 | Faraday House, Sir William Siemens Square, Frimley, Camberley, Surrey, GU16 8QD, United Kingdom |
| CLEMENTS, Andrew Vernon RESIGNED | Director | 16 Jan 1993 | 27 Oct 1994 | | August 1955 | 19 Page Furlong, Dorchester On Thames, Wallingford, Oxfordshire, OX10 7PU |
| DOMBROWE, Heinz Otto Guenter RESIGNED | Director | 13 Aug 2007 | 15 Aug 2011 | United Kingdom | December 1947 | 1 Chantry View Road, Guildford, Surrey, GU1 3XW |
| FARRELL, Edward Joseph RESIGNED | Director | 02 Sep 2011 | 08 Feb 2013 | Wales | February 1970 | Faraday House, Sir William Siemens Square, Frimley, Camberley, Surrey, GU16 8QD, United Kingdom |
| FISCHER, Joerg RESIGNED | Director | 01 Jul 2020 | 30 Apr 2023 | United Kingdom | March 1982 | Park View, Watchmoor Park, Camberley, Surrey, GU15 3YL, United Kingdom |
| GENT, Gerard Thomas RESIGNED | Director | 02 Sep 2011 | 31 Jan 2012 | United Kingdom | December 1953 | Glyn Rhonwy, Llanberis, Gwynedd, LL55 4EL |
| GRAY, Martin William RESIGNED | Director | 01 Dec 2015 | 18 Aug 2019 | United Kingdom | December 1973 | Faraday House, Sir William Siemens Square, Frimley, Camberley, Surrey, GU16 8QD, United Kingdom |
| HUGHES, Gillian RESIGNED | Director | 03 Sep 2019 | 01 Jul 2020 | United Kingdom | January 1970 | Faraday House Sir William Siemens Square, Frimley, Camberley, Surrey, GU16 8QD, United Kingdom |
| JOHNSON, Michael Lee RESIGNED | Director | 13 Aug 2007 | 17 Aug 2011 | United States | January 1958 | Glyn Rhonwy, Llanberis, Gwynedd, LL55 4EL |
| LOGUE, Fraser Campbell RESIGNED | Director | 20 Sep 2013 | 31 Jan 2023 | United Kingdom | September 1953 | Park View, Watchmoor Park, Camberley, Surrey, GU15 3YL, United Kingdom |
| MA, Yanping RESIGNED | Director | 30 Apr 2023 | 31 Aug 2023 | United Kingdom | September 1975 | Park View, Watchmoor Park, Camberley, Surrey, GU15 3YL, United Kingdom |
| MOORE, Robert Andrew, Dr RESIGNED | Director | | 01 Jan 1994 | England | July 1947 | April Cottage, Noke, Oxford, Oxfordshire, OX3 9TX |
| OWEN, Judy Ann RESIGNED | Director | 01 Dec 2002 | 30 Nov 2015 | Wales | October 1954 | Faraday House, Sir William Siemens Square, Frimley, Camberley, Surrey, GU16 8QD, United Kingdom |
| ZIERING, Michael RESIGNED | Director | 19 Jan 1993 | 01 Jan 2007 | | April 1956 | 5700 West 96th Street, Los Angeles, California Ca 90045, Usa |
| ZIERING, Sigi, Dr RESIGNED | Director | | 12 Nov 2000 | | March 1928 | 5700 West 96th Street, Los Angeles, California 90045, Usa |