Complete
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8 9 11 14 18 22 24 1 2 19 3 13 12 4 10 17 15 5 21 23 20 6 16 7
  1. 1a In the intervals separating other activities (7,5)
  2. 9a Scope (5)
  3. 10a Confusion (7)
  4. 11a Small island in a river (4)
  5. 12a Impoverished — ending it (anag) (8)
  6. 14a Protective headgear (6)
  7. 15a Grapes (anag) — cigarette (slang) (6)
  8. 18a Much employed (4,4)
  9. 20a Immeasurably long period of time (4)
  10. 22a Blighty (7)
  11. 23a Customers (5)
  12. 24a Schoolchildren who return to an empty home (8,4)
  13. 2d Involve (someone) in a dispute (7)
  14. 3d Unit of power — Scottish engineer, d. 1819 (4)
  15. 4d Stretch out (6)
  16. 5d Deadly (8)
  17. 6d North American elk (5)
  18. 7d Isolation (of a hermit?) (12)
  19. 8d Assume control of a situation (4,3,5)
  20. 13d Hand down (8)
  21. 16d Make believe (7)
  22. 17d Coastal department of western France (6)
  23. 19d Illumination (5)
  24. 21d Perform in the street for money (4)