Complete
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6 8 10 13 16 19 21 7 1 18 17 2 9 15 14 3 12 20 11 4 5
  1. 1 a Spontaneous — unrehearsed (9)
  2. 8 a Consume (3,2)
  3. 9 a Replace what you've got with something better (5,2)
  4. 10 a Gets less (8)
  5. 11 a Detached, skimmed or final? (4)
  6. 13 a Ancient quarter of many north African cities (6)
  7. 14 a Unmoving (6)
  8. 16 a Roman emperor after Claudius (4)
  9. 17 a One lends a hand around the house (4,4)
  10. 19 a 1968 Simon & Garfunkel song (7)
  11. 20 a Happen as a result (5)
  12. 21 a Mocking (9)
  13. 1 d Saucy (8)
  14. 2 d Comic spiel (6)
  15. 3 d Rounded and slightly elongated shape (4)
  16. 4 d Form that a verb may take — steepen rents (anag) (7,5)
  17. 5 d Without scruples (12)
  18. 6 d The basics (12)
  19. 7 d Confusion (12)
  20. 12 d Unearthly (8)
  21. 15 d Flooring found in ancient Roman villas (6)
  22. 18 d Dishonest individual (4)

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