| PERNA, Robert ACTIVE | Secretary | 10 May 2019 | | | | Hethel Engineering Centre, Chapman Way, Hethel, Norwich, Norfolk, NR14 8FB, England |
| BASTARRICA, Air ACTIVE | Director | 07 Jun 2019 | | United States | July 1979 | Hethel Engineering Centre, Chapman Way, Hethel, Norwich, Norfolk, NR14 8FB, England |
| COOK, Sarah Elizabeth ACTIVE | Director | 07 Jan 2022 | | United States | October 1977 | Hethel Engineering Centre, Chapman Way, Hethel, Norwich, Norfolk, NR14 8FB, England |
| GIESECKE, Daniel ACTIVE | Director | 09 Feb 2015 | | United States | January 1968 | 1151, Maplewood Drive, Itasca, Illinois, 60143, United States |
| BRANDER, Douglas RESIGNED | Secretary | | 21 Feb 1992 | | | 29 Houndean Rise, Lewes, East Sussex, BN7 1EQ |
| CABRERA, Raymond RESIGNED | Secretary | 01 Mar 2006 | 09 Feb 2015 | | | 37w284 Red Gate Road, St Charles, Illinois 60175, United States |
| JACKSON, Thomas Googe RESIGNED | Secretary | 01 May 2019 | 10 May 2019 | | | 1151, Maplewood Drive, Itasca, United States |
| MCRAE, Linda Margaret RESIGNED | Secretary | 21 Feb 1992 | 30 Jun 2000 | | | 27 Arundel Road, Littlehampton, West Sussex, BN17 7BY |
| PACIONI, Mark RESIGNED | Secretary | 09 Feb 2015 | 25 Apr 2019 | | | 1151, Mapplewood Drive, Itasca, Illinois, 60143, United States |
| PETERSEN, Stephen Donald RESIGNED | Secretary | 30 Jun 2000 | 01 Mar 2006 | | | 1090 Adler Lane, Carol Stream, Illinois 60188, Usa |
| BOREHAM, Michael Bryant RESIGNED | Director | | 30 Jun 1998 | | June 1928 | The Old Rectory, Sutton, Pulborough, West Sussex, RH20 1PS |
| BRACE, James Frederick RESIGNED | Director | 20 Jun 2000 | 31 Aug 2002 | | June 1945 | 516 South Park Avenue, Hinsdale, Illinois 60521, Usa |
| GARRATT, Reginald George RESIGNED | Director | | 30 Jun 2000 | | September 1929 | 3 Regent Drive, Oakbrook, Chicago, Illinois 60521, FOREIGN, Usa |
| GRANT-SALMON, Anthony Kenneth RESIGNED | Director | 15 Oct 1991 | 30 Apr 2001 | | April 1936 | 17 Coxham Lane, Steyning, West Sussex, BN44 3LG |
| KNOWLES, Nancy Welch RESIGNED | Director | | 30 Jun 1999 | | November 1930 | 4 Oakbrook Club Drive, Oakbrook, Chicago, Illinois 60521, FOREIGN, Usa |
| MOYLE, James RESIGNED | Director | 01 Sep 2002 | 01 Mar 2006 | | August 1952 | 11 Forest Gate Circle Oak Brook, Illinios, 60523, Usa |
| NIEW, Jeffrey Stanley RESIGNED | Director | 01 Jun 2010 | 09 Feb 2015 | Usa | November 1966 | 96, Church Street, Brighton, BN1 1UJ, England |
| PARFITT, Roger Charles RESIGNED | Director | 01 Mar 2006 | 07 Jun 2019 | United States | May 1954 | 586 South Avenue, Glencoe, Illinois 60022, United States |
| TERRY, Kenneth John RESIGNED | Director | 01 Jul 1999 | 30 Jun 2000 | | May 1964 | Pear Tree House No 1 Parkgate, London, SE3 9XE |
| ZEI, John James RESIGNED | Director | 20 Jun 2000 | 01 Jun 2010 | | August 1944 | 22 Clarington Way, Barrington, Illinois 60010, Usa |
| KNOWLES EUROPE RESIGNED | Director | 01 Jun 2010 | 01 Jun 2010 | | | 96, Church Street, Brighton, BN1 1UJ, England |