1: How to get around doing business, essentially (3)

3: Clean air makes Australia singular (5)

5: Beauty stripping top and bottom is an additional feature (3)

6: Prickly plants caught some of the action (5)

8: Nice work - point out the beginning (9)

9: Devil gets a beating in Adelaide (5)

10: Implement box for young cat (3)

12: Folds formal wear for the Speaker (5)

13: Capture ten heading north (3)

1: Later round without an opponent (3)

2: Beg like this - it's lawful (7)

3: Residents back business, copper gasps (9)

4: Pervert stripped in mineral water (5)

7: Yellow fowl (7)

8: Detailed map I sent off (5)

11: Half disapprove of old king (3)