1: Nits are possibly more unpleasant (7)

6: Anyway - no! (3)

7: Roosevelt's undergarment? (5)

8: Perhaps men sit and eat in a cafe (9)

10: Disturbance is the robbery (5)

11: 23% of Scandinavians backing leaders (3)

13: They try canopies (7)

1: Sister gets nothing, we hear (3)

2: Looks like an eyesore, sounds like an eyesore (3)

3: Hints from close friends (9)

4: Hazardous emanation from river used by a crime boss (5)

5: Test limits of sexologist in assignation (5)

8: Void three stones (5)

9: Dance with Oliver (5)

11: Compete with life in France (3)

12: Greek characters suggest dawn (3)