Complete
00:00:00
7 9 16 17 20 22 1 12 13 2 18 3 10 23 8 11 21 4 14 19 5 15 6
  1. 1 a Covering against sun or rain (6)
  2. 4 a Rapidity (5)
  3. 7 a Personage (6)
  4. 8 a Operated by hand (6)
  5. 9 a Liberate(d) (4)
  6. 10 a Additional levy (8)
  7. 12 a Initial — action before the main event (11)
  8. 17 a Undo (a shoe?) (8)
  9. 19 a Boarding school bedroom (abbr) (4)
  10. 20 a Dismal (6)
  11. 21 a Aural secretion (6)
  12. 22 a Tall and thin (5)
  13. 23 a Extensive landed property (6)
  14. 1 d Tweet (7)
  15. 2 d Non-existent location (7)
  16. 3 d Jumping toy (4,5)
  17. 4 d Asp, perhaps? (5)
  18. 5 d Longest line of latitude (7)
  19. 6 d Very high quality (2.4)
  20. 11 d Hilarious — extraordinarily precious (9)
  21. 13 d Vigorous towelling (3-4)
  22. 14 d Independent Pyrenean state (7)
  23. 15 d Distance measured in imperial units (7)
  24. 16 d (Strike with a) heavy stick (6)
  25. 18 d Soft and pleasant to sit on (5)

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