Complete
00:00:00
7 14 19 1 9 12 21 2 15 3 11 20 10 4 18 16 5 8 13 6 17
  1. 1 a Large quantity (informal) (10)
  2. 7 a Unvarying (8)
  3. 8 a Boy's name — academic bigwig (4)
  4. 9 a Major tributary of the Rhine, flowing through Frankfurt (4)
  5. 10 a Dazed (7)
  6. 12 a Fixed and definitive (4,3,4)
  7. 14 a Tolerate (7)
  8. 16 a Run like billy-o (4)
  9. 19 a Deliberate trick (4)
  10. 20 a Very soon (2,1,5)
  11. 21 a It's not a good place to get stuck! (2,1,3,4)
  12. 1 d Flower (5)
  13. 2 d Employee taking notes? (7)
  14. 3 d Distinctive periods (4)
  15. 4 d Scope for freedom of action (8)
  16. 5 d Accessory (3-2)
  17. 6 d Natural ability (sought by scouts?) (6)
  18. 11 d Mending — nightcap (anag) (8)
  19. 12 d Car modified for extra power and speed (3,3)
  20. 13 d Studio — I relate (anag) (7)
  21. 15 d Confuse (3,2)
  22. 17 d Ransack (5)
  23. 18 d You're getting closer! (4)

Across

Down