1: Mend a split state (11)
2: Hand down entangled net with water damage (7)
3: Enter names - register only lists beginners (5)
4: Stuff used to make soup with apples - it's boiled (5-4)
5: Miserable raise follows poor grade (5)
6: Hesitate to leave when harboring evil (9)
7: What one does with barrels can lead to a problem in the toilet. (4, 3)
8: Emergency room stocks one sensitive organ (3)
12: Hostile warning: one man has captured the queen (11)
13: Ban professional writer (9)
14: Corner I established confines the most unruly (9)
16: Slattern states first client was a clam, for instance. (7)
17: Get zany, swimming in exotic river (7)
19: Wants - in fact, just has to have (5)
20: Cast ballots, with five to back Edward (5)
21: The end, you say? On the contrary! (3)