1: See, you are a cad. (3)
2: Doctrine for some Kiwis makes sense (3)
3: I bang rock, disturbing snake (4,5)
4: Polyamide used by many Londoners (5)
5: Notes spent in Germany (5)
8: Roman date and time that is in Latin (2,3)
9: Arenas almost filling with the hooter (5)
12: Bloody bored inside (3)
13: 4-down Arias hit high note in some of the lungs (3,3)