1: Cover-up file conceals, ultimately, wrongdoing by one female (3,4)
5: Singers in a special Tosca production (5)
9: Lets stand on a cowboy hat (7)
10: Make known one pound increase after high school (7)
11: Subscribe once more to Nazarene weekly in part (5)
12: Not clear but large; you ring us after the morning (9)
14: Discharge from Greek island (7)
16: Stormed loudly and held the throne (7)
19: Holy season has one setback in Germany; it's not strict (7)
20: One who does not believe in Castro (7)
21: Lined salt shaker made ready for use (9)
23: Kingdom very mountainous at first (5)
25: Sort of aircraft axe? (7)
27: The king did not stand for it when he heard that he ogles her. (4, 3)
28: Egad, a saw, run in reverse (5)
29: A small vault is said to be round about the rail support (7)