Complete
00:00:00
8 10 13 16 6 5 19 1 17 2 9 14 3 11 15 4 12 18 7
  1. 5a Muscular structure used when breathing (9)
  2. 8a Idiot (4) – continue (2,2)
  3. 9a Outpouring of enthusiasm (8)
  4. 10a Dedicate (6)
  5. 11a Not harmful (6)
  6. 13a ___ Christie (6)
  7. 15a Wealthy person (3,3)
  8. 16a A-list celeb (8)
  9. 18a Irritation (4)
  10. 19a Sparkling wine (9)
  11. 1d Roadside indicator (8)
  12. 2d Round object (6)
  13. 3d Easily assembled house (6)
  14. 4d A long time (4)
  15. 6d Non-native (9)
  16. 7d Pathos – canopying (anag.) (9)
  17. 12d Substance which sustains a living organism (8)
  18. 14d Respiratory complaint (6)
  19. 15d Official (6)
  20. 17d Discomfort – 18 Across (4)