Cryptic crossword - The Scotsman 05/09/14

ACROSS

1 Surveyor holding the stick has strength on hand (8)

5 Saga rich in secret of fungus (6)

10 Chorus around church seats is pouring forth (7)

11 One who gives encouragement to a superior (7)

12 Cut returned script during tests (5)

13 Formerly deep, now steep (9)

14 Doesn’t change theme about Saudi Arabia after seeing results of destruction (7,3,4)

17 Principled commitment that gives crystal clear picture (4,10)

21 You end up where you started with this comprehensive blunder (5,4)

23 Malcontent makes more trouble over original proposition (5)

24 Slow walkers lost lead to regular trekkers (7)

25 Initially elevated by mass arranged at mission (7)

26 Teased about being dignified (6)

27 Reported idiot had finished and gone up (8)

DOWN

1 Ribbons seen in windows (6)

2 Medium will swear to get older (7)

3 It’s only just so-so at Sunday entertainment (5,4)

4 Looking sick like informer who’s completely innocent (2,5,2,5)

6 Gather first apple in Scottish archetypal landscape (5)

7 Drink nastier concoction (7)

8 Piece of body armour that lets core move freely (7)

9 Reprimand back-sliders with instrument of childhood punishment? (6,8)

15 Wrongly blame ties that are meritorious (9)

16 Winter underwear useful in upward draughts? (8)

18 Dug up food at bottom of river (7)

19 Was against work being suggested (7)

20 Class heard use of icon not allowed in this state (6)

22 Lived for day we left, gutted (5)