Complete
00:00:00
7 9 13 16 5 18 1 10 2 8 15 14 3 12 11 4 17 6
  1. 5a Overusing it (anag) — inducing dizziness (11)
  2. 7a Small fly that bites (4)
  3. 8a Homeless feline (5,3)
  4. 9a Collection of books (7)
  5. 11a Jewish baked roll (5)
  6. 13a Boring tool (5)
  7. 14a Writers (7)
  8. 16a Rugby halfback (5-3)
  9. 17a Enid Blyton's famous number? (4)
  10. 18a Unusually good (11)
  11. 1d Be anxious — part of a fingerboard (4)
  12. 2d Artisan (anag) — My Way singer (7)
  13. 3d Young mare (5)
  14. 4d Person of great and varied learning (8)
  15. 5d Salad dressing (11)
  16. 6d Voyaging to other worlds (5,6)
  17. 10d Type of sweater (8)
  18. 12d Excess (7)
  19. 15d Girl's name — scarlet flower (5)
  20. 17d Sawyer's friend (from Helsinki?} (4)