1: Upset expression of surprise follows failure of comic take-off (5)
4: Working leader sobs bitterly after blemishes returned (5,4)
9: Decision tree's unusual goal: mirth? (9)
11: Hand out Kleenex, wiping away a bit of tears (5)
12: Church assembly contributing to heresy? No dice! (5)
13: Implement box for young cat (3)
14: Endless taping-over is unsuitable (5)
15: Mr Stewart on the staff (3)
17: Proof of intoxication (9)
18: Long Rhine sequence in Wagner's work (9)
21: Without it, set call for recompense (3)
22: Raced around a tree (5)
23: Freshen the atmosphere (3)
24: Loathing for leader leaving platform (5)
27: Egad, a saw, run in reverse (5)
28: How imprisoned labourers showed friendship? (4,5)
29: Kept definitely in step (9)
30: Put liquor in hollow capsule swallowed by young man (5)