2: Italian composer making endless noise, sir (7)

6: Fiction position (3)

8: Water plants used in informal Gaelic gardens (5)

9: Very clever fish ain't at sea (9)

11: Rabbit (male) with nest of bunnies? (5)

12: One may be a very long time (3)

13: Candidate has no time for ease, apparently (7)

1: Laid off, breadwinner's starting to wing it (2-3)

3: Dressing of malt and beans to make horse tender (9)

4: Thankless person from Tangier (7)

5: Anger that is constraining response (3)

7: Witty remark, for example, about constant batterer (7)

10: Add a letter to get the smell of fish (5)

11: Polygraph unexpectedly traps vandal (3)