fringe theatre

From King Dictionary of Contemporary English
Related topics: Theatre
fringe theatreˌfringe ˈtheatre noun [uncountable] British English APTplays by new writers, often on difficult subjects or written in unusual ways, that are not performed in the main theatres
Examples from the Corpus
fringe theatreMime has never enjoyed a place on centre stage, it lives in the shadows of fringe theatre and the Big Top.