Cryptic crossword - The Scotsman 02/09/14

ACROSS

1 Heard on Sunday morning, perhaps, why people like some whisky? (1,4,2,5)

9 Put top on cereal on a whim (7)

10 East Indian sailors were rascals in disguise (7)

11 Sought rigour contained in mathematical discipline (4)

12 Couch suitable for prima donna on penultimate song (5)

13 Beats up with piece of wood (4)

16 Make marks in the blue that are superficial (7)

17 Hierarchical way to enjoy a convertible? (3,4)

18 I’d grave doubts about hymn collection (3,4)

21 Computer displayed crown of tropical tree (7)

23 Salacious material delivered by post office to navy (4)

24 Draped rug sure to conceal illegal substances (5)

25 Indian clerk has degree, but finishes short (4)

28 Issues of New Musical Express said to make no friends (7)

29 Uneasy sailor comes upon a hut (7)

30 Fascist, say, to attract volunteers to set fire to so-called “master race” (12)

DOWN

2 Antibody agent used to liven up tepid PE (7)

3 Some muscle vermouth produces (1,3)

4 Do as you’re told, including decline to get up, and you’ll get overweight (7)

5 City that’s unstably stable around original foundation (7)

6 Fifty American troopers starting to experience craving (4)

7 Subject of low practical joke, perhaps, used to wash hair (7)

8 There’s a powerful beat to the relatively high value of sterling (1,6,5)

9 Disasters cause patch as store falls into ruin (12)

14 Writing that doesn’t get finished? It’s on a slippery slope (5)

15 Head off to spot fruit (5)

19 Fellow inserts sleeve into jacket, for example (7)

20 Lose oar in spray with spray can (7)

21 Put out a call for tv presenter in festival procession (7)

22 Art in decline hides pang in throat (7)

26 Individual thrown among rubbish during uproar (4)

27 Two piece first draws breath (4)