3: Authority, for example (sic) (3-2)
5: Airship loose after opening bombardment (5)
6: Bumped into yours truly at junction (3).
7: Training some smart little monkeys (9)
9: Vet theatre opening 8-down (3)
10: Lug worm finally being a symbol (5)
11: A drain could be at the bottom (5)
12: Nothing we have to pay (3)