Complete
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1 8 11 14 18 20 22 2 19 17 10 3 9 4 16 15 5 21 23 6 12 7 13
  1. 1 a Shower with love (4)
  2. 3 a Devilish (8)
  3. 8 a Art institution with galleries in London, Liverpool and St Ives in Cornwall (4)
  4. 9 a Grow rapidly (overnight?) (8)
  5. 11 a Flourishing (10)
  6. 14 a Not flourishing (6)
  7. 15 a Tiny particle light or electromagnetic radiation (6)
  8. 17 a Top grade chef (6,4)
  9. 20 a Bonding — hid aeons (anag) (8)
  10. 21 a Long story (with a twist?) (4)
  11. 22 a Fishlike jawless vertebrates (of which Henry I is said to have eaten a surfeit and died) (8)
  12. 23 a __ von Bismarck, first chancellor of Germany (4)
  13. 1 d Organised body of related information (8)
  14. 2 d Intensive teaching session given to one or a small number of students (8)
  15. 4 d Large tropical American spiny-backed lizard (6)
  16. 5 d Late (10)
  17. 6 d Plunder (4)
  18. 7 d Turn up (4)
  19. 10 d Google Chrome, for example (3,7)
  20. 12 d Loyal supporter (8)
  21. 13 d Indirect malicious implication (8)
  22. 16 d Stupid behaviour (6)
  23. 18 d Become less interesting (4)
  24. 19 d Mate (informal) (4)

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