I remember going to a concert in the main building in the 80s or 90s and at that time it had an open floor rather than seating. Around the same time, the Triangle cinema operated from either the same building or another that had been built onto the back. I'm not entirely sure whether that cinema used part of the main building through an entrance at the back or a separate one that had been built onto the back of it. The Triangle did not use the hall in the main building. Later, the front part of the building became a branch of Waterstones.