Complete
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7 9 16 17 20 22 1 12 13 2 18 3 10 23 8 11 21 4 14 19 5 15 6
  1. 1a Capitalise (on) (4,2)
  2. 4a Drawback that wasn't evident (5)
  3. 7a Small and delicate (6)
  4. 8a Country (6)
  5. 9a Three-handed card game (4)
  6. 10a Contrive (8)
  7. 12a Its juice is used to make grenadine (11)
  8. 17a Premature (8)
  9. 19a ___ Bay, Isle of Wight tourist spot, famous for its multi-coloured sand cliffs (4)
  10. 20a Strongly advising (6)
  11. 21a Yelp, no! (anag) — in public (6)
  12. 22a Henry or Bruce? (5)
  13. 23a Robust (6)
  14. 1d Accumulate — tally (5,2)
  15. 2d Holy place (7)
  16. 3d Harvard University is the oldest in this group (3,6)
  17. 4d Omnivorous mammal of Central and South America (5)
  18. 5d Divide into three (7)
  19. 6d Ravenous (6)
  20. 11d Saucy vessel? (5,4)
  21. 13d Shape of Athens' Tower of the Winds (7)
  22. 14d Not professional (7)
  23. 15d In the same way (7)
  24. 16d Common to both (6)
  25. 18d Dirty and unappealing (informal) (5)