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 Growing smaller (11)
  2. 7 a One of five at a birth (4)
  3. 8 a Tree whose leaves are eaten by silkworms (8)
  4. 9 a Pacify (7)
  5. 11 a Florida resort city (5)
  6. 13 a Jumping firework (5)
  7. 14 a Person who works underwater using a portable air supply (7)
  8. 16 a Submissive (8)
  9. 17 a Small medicine bottle (4)
  10. 18 a Impulse to steal (11)
  11. 1 d Prayer ending (4)
  12. 2 d Living (7)
  13. 3 d Lamps (anag) — song (5)
  14. 4 d Becoming more mature (8)
  15. 5 d Chop-chop (6,5)
  16. 6 d Mixture of spices used in curries — am a gas alarm (anag) (5,6)
  17. 10 d Colder (8)
  18. 12 d Paper folding art (7)
  19. 15 d LX — highest possible score with one dart (5)
  20. 17 d Device that rotates to show the direction of the wind (4)

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