1: Cast ballots, with five to back Edward (5)
3: Part of upside-down Greek letter (3)
5: Ordered hoop to conserve mass and energy (5)
8: Play with exaggerated emotions made moral play (9)
10: Top card? Excellent! (3)
11: Language of first and last detective (5)
12: Raw material for Swedish coins (3)
13: Demand payment? Just so! (5)