1: Tiny bit of self-interest (5)
4: Actual air of confusion calculating insurance premiums (9)
8: Place vermin's raised for new business venture (5-2)
9: Best work it out with mother (7)
11: Prevent ruler from going ashore (9)
12: Artist back on the issue of causing inflamation. (5)
14: Cant this band collect any moss? (7,6)
16: Novel deviance in the movie? (5,2,6)
19: Head man loses head over flower (5)
20: Civil libertarian sends building uprights (4,5)
21: ... and soon it will be read as etc. (3,2,2)
22: King Lear's daughter bathed in oranges and spice (7)
23: Observed, yet seen so poorly (3,4,2)
24: So sad coming back, Pops (5)