Complete
00:00:00
1 8 10 13 17 21 24 2 18 3 12 11 4 16 22 14 5 9 20 19 6 15 7 23
  1. 1 a Classroom stand-in (6,7)
  2. 8 a Piece of ground with specific characteristics (7)
  3. 9 a Criminal twins, Ronnie and Reggie (5)
  4. 10 a Goddess of the rainbow and messenger of the Titans (4)
  5. 11 a Contaminated (8)
  6. 13 a Astringent substance in tea and wine (6)
  7. 14 a Colours flown at sea to indicate nationality (6)
  8. 17 a Determined (8)
  9. 19 a Mediterranean meal of many small dishes (4)
  10. 21 a Hebridean island, known for its malt whisky distilleries (5)
  11. 22 a Allowed (7)
  12. 24 a Old way for constructing internal walls — tabulated wand (anag) (6,3,4)
  13. 1 d Command to a trained dog (3)
  14. 2 d Helping of food (7)
  15. 3 d Make available for a limited time (4)
  16. 4 d Speaker system (6)
  17. 5 d Not acidic (8)
  18. 6 d Core (5)
  19. 7 d Home (9)
  20. 10 d Quiz (9)
  21. 12 d Treacherous (8)
  22. 15 d Lack of initiative (7)
  23. 16 d Shame (6)
  24. 18 d Sound of something soft and wet hitting a surface (5)
  25. 20 d Unvarnished (4)
  26. 23 d Wipe (3)

Across

Down