Despite its compact design and maneuverability , the Grouse was not in itself a commercial success .
Grouse formed the basis for the Gloster Grebe and Gamecock fighters which were used by Britain 's Royal Air Force into the 1930s .
Despite its compact design and maneuverability , the Grouse was not in itself a commercial success , although it formed the basis for the Gloster Grebe and Gamecock fighters which were used by Britain 's Royal Air Force into the 1930s .