Jetro language test information can be found on the following page

http://www.jetro.go.jp/uk/e/language/index.html

The JETRO Business Japanese Proficiency Test is held on the 4th Sunday in November every year at JETRO London, with the cooperation of the University of Sheffield. It is designed to assess the standard reached by those who study business Japanese

The next test will be held on;
Date: Sunday November 20, 2005
Location: Central London
Application deadline: 21st September 2005