1: Diet, sir! Clergy upset with fat constituents (13)
2: Rule violater alarming teacher (7)
3: Heavy metal group X (4)
4: Erica was taken into the ship to provide protective covers. (7)
5: On the way back, I had to keep calm and concentrate (7)
6: Ball tops over-ripe bananas (3)
7: Shepherd, at times, is more abrupt in tone (7)
9: Ball-horses are travellers! (5-8)
11: Film #6 taken in by Stooge #1? (5)
13: Native American involved in drug problem exposed (5)
16: British actor in Rocky VII role (7)
17: Type sister picked up in taverns (7)
18: Our tree worked out how to send out in another way (7)
19: Parking likely to be easily adaptable (7)
22: A hint for the snooker champ? (3)
23: Send back gangster's gun to get ID (3)