Complete
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1 8 10 15 17 21 23 2 12 18 3 13 9 19 4 24 5 11 20 22 6 14 7 16
  1. 1a Tap disc – user of tap! (6)
  2. 4a Pip-squeak (6)
  3. 8a Roans (anag.) – arson (anag.) (5)
  4. 9a Cavil (7)
  5. 10a Petrol additive (7)
  6. 11a Large US state (5)
  7. 12a Technique where 24 acrosses are inlaid into wood, for decoration (9)
  8. 17a US youth? (5)
  9. 19a Crime (7)
  10. 21a German architectural style (7)
  11. 22a Totem (anag.) (5)
  12. 23a Bather (anag.) (6)
  13. 24a Attractive appearance that covers true nature or feelings (6)
  14. 1d Japanese condiment (6)
  15. 2d Word with same meaning (7)
  16. 3d Bird of prey’s nest (5)
  17. 5d Group of five players (7)
  18. 6d Where emails arrive (5)
  19. 7d Belief in at least one God (6)
  20. 9d Petulant (9)
  21. 13d Read someone the __, formally warn (4,3)
  22. 14d River that flows to the East China Sea (7)
  23. 15d Bicycle-type frame on blades, used in winter sport (6)
  24. 16d Amusing medieval entertainer (6)
  25. 18d Stone fruit (5)
  26. 20d French woman (5)