16d is the problem then. That's where the U is, though it's the extra letter in a crossing word! By the way, I wonder if 16d is an Americanism; everyone uses it- in fact I very seldom hear anyone using the proper past-tense verb.
Can't seem to get a clear enough copy
Could one of you send it direct to my Gmail from a scanned copy because the links are printing very faint and I can't make out the letters.