Cryptic crossword - The Scotsman 24/09/2012

Across

1 Charge round, pretending to train (8)

5 Rank of one in charge of some coppers

(6)

10 A heavy snowfall can cause devastation (9)

11 Sticks within some American establishments (5)

12 Is it time to leave the French table? (7)

13 Having to smooth things out, at the end of the day (7)

14 In short, one 14 across dares to upset his brothers (8)

17 As a matter-of-fact, run-of-the-mill or 6 down (5)

19 Working to start play ahead of the field (2,3)

21 Wrong time to send off deposit (8)

24 Browse on line for old degree certificate (7)

25 Allow a short-term prisoner to give up (7)

27 Felt inclined to appreciate having the last word (5)

28 Stood in for dupes getting tied up (9)

29 Watch had to be delivered on line (6)

30 In time, hard runner went after aggressor (8)

Down

1 Works out, with model, how to build factories (6)

2 Was informed about a confrontation, by the end (5)

3 Particular soldier could be a double-agent (7)

4 Wind-storm not operating in rotation (5)

6 Was about to capture the Channel Islands, a long time ago (7)

7 State requirement to be in working order (9)

8 Intended to take broadside into action (8)

9 Is about to let top dog be untied (8)

15 It sounded wrong, at first, to be frank (9)

16 Cancels some girl’s programmes (8)

18 Has sympathy with some opposed to grants (8)

20 Record return more unprecedented by slow but steady worker (7)

22 Prodigy may have to rest up after 24 hours, in short (7)

23 Conductor had a sly look over a degree ... (6)

25 ... but it sounds foul to confer a degree on one ... (5)

26 ... yet steered with skill getting first degree (5)