Auto-Cycle Union

The Auto-Cycle Union (ACU Motorcycling GB) is governing body of motorcycle sport in Great Britain (not Northern Ireland, which is governed by the MCUI, the All Ireland governing body, but including the Channel Islands and the Isle of Man). Founded in 1903 and acquiring it current name in 1907 its aim was to develop motor sport through clubs and arrange touring facilities for members. In 1904 it was a founding member of the Fédération Internationale de Motocyclisme.
See more at Wikipedia.org...