1: Begins seeing another divorcee? Deplorable. (3)
3: Big Bird: 'Apologies--getting a late start' (5)
6: Authority, for example (sic) (3-2)
9: Clear initial rubbish in drain (3)
10: Do I have the capacity to be good-natured? (7)
11: Picture a dessert without topping (3)
12: Reportedly, looked at sea serpent as exemplar (5)
15: Stranger, in turn, had an accident (3-3-3)
17: Guided into the West (2,3)
19: Zilch sent off for veal cutlet (9)
21: Tiny bit of self-interest (5)
24: Too old for love - a woman, for example, rejected (7)
26: A hint for the snooker champ? (3)
27: Pitchers were transported south (5)
28: Swamp creature resting tail on a rocky outcrop (5)
29: Inflexible yet adjusted (3)