Complete
00:00:00
7 9 13 16 5 18 1 10 2 8 15 14 3 12 11 4 17 6
  1. 5 a Curative (11)
  2. 7 a Little devils (4)
  3. 8 a Priest's service book (8)
  4. 9 a Tardy (7)
  5. 11 a Aquamarine or emeralds, for instance (5)
  6. 13 a Liquid once used to produce anaesthetic vapour (5)
  7. 14 a Machine operator? (7)
  8. 16 a Persist (8)
  9. 17 a Camouflaged shelter from which to observe wildlife (4)
  10. 18 a Cocktail of vodka and orange juice (11)
  11. 1 d Sediment in drink (4)
  12. 2 d Blackcap or chiffchaff, say (7)
  13. 3 d Jarman or Jacobi? (5)
  14. 4 d Grating (8)
  15. 5 d Seems put out (anag) — furious (11)
  16. 6 d Mix of ground hot spices (5,6)
  17. 10 d Narrow opening (8)
  18. 12 d Devoid of moisture (4,3)
  19. 15 d Understood (5)
  20. 17 d A place that's abuzz? (4)

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