Complete
00:00:00
6 7 10 13 17 21 23 1 14 2 12 11 3 16 22 15 4 8 20 18 5 19 9
  1. 1a Nice try, NHS (anag) — highly poisonous compound (10)
  2. 7a Card game (7)
  3. 8a Sticks (5)
  4. 10a Espied (4)
  5. 11a Non-believer (8)
  6. 13a Device for sending or receiving signals (6)
  7. 15a Occur (6)
  8. 17a Boundless (8)
  9. 18a Display (4)
  10. 21a West African country, independent since 1957 (5)
  11. 22a Ecstasy — toenail (anag) (7)
  12. 23a Nasty (10)
  13. 1d Gumption — feeling (5)
  14. 2d Coarse file (4)
  15. 3d Rugged (6)
  16. 4d Patron saint of Greece (and Liverpool) (8)
  17. 5d Relentless (7)
  18. 6d Frozen water sport (3,7)
  19. 9d Renewed energy to carry on (6,4)
  20. 12d Precipitation (8)
  21. 14d Part of a song (7)
  22. 16d Greats (anag) — Italian liqueur (6)
  23. 19d Robbery (5)
  24. 20d Indonesian island — programming language (4)