3 clues all in the same part of the grid!
11a Watch training college in predicament (8) ?p???a?e Think it's spectate, but why?
15a Large topless ladies, say, in icy accommodation (6) i???o? Think it's icebox, but why?
12d Old people these days with flatus occasionally (5) ????s If I'm right about the other two, it's c?e?s