Cryptic crossword - The Scotsman 29/04/14

ACROSS

1 Given a bad time, being educated at public school (8)

5 Does this animal talk a lot? (6)

9 Sesame seed oil: make with spirit and preserve, they say (8)

10 Plead with a person to hop it (6)

12 Master follows novel gist with disgraceful mark (6)

13 Conferred with heads of railway office on the Underground (5)

16 More incautious way to save one’s bacon (6)

17 Grownup on European railway sleeping with other people ... (8)

20 ... and a week’s journey led to not sleeping any more! (8)

21 Sing of international unity (6)

23 Country in need of retrospective help (5)

25 Look at first half of thesis and get hot under the collar (6)

28 A girl confused about love of her own name? (6)

29 Play sporting at countryside event (4,4)

30 It’s suitable to tie in with promotion (6)

31 Fellows add up in their heads (8)

DOWN

1 and 2 Rotten stinking aristocracy (4,4)

3 Express her original emotion in that place (4,5)

4 Speech in praise of you, it’s said, will record you first (6)

6 Some light at right angle to the ship (5)

7 Spend all your money and to hell with the whole crowd (4,3,3)

8 Saints visit the Vatican (3,4,3)

11 Useful drink once the head’s off (5)

14 Lack of continuity in communication leads to failure of relationship ... (8,2...)

15 ... so hit road unhappily around daybreak if it’s difficult (... 2,4,2,2)

18 Lent a much-garbled version of spam (9)

19 Women say they are at the heart of intelligence organization (5)

22 We bear new word of warning (6)

24 Word in the ear of a team (5)

26 and 27 Superior beverage to draught of yer lager (4,4)