Complete
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7 9 13 16 5 18 1 10 2 8 15 14 3 12 11 4 17 6
  1. 5 a Those with in-depth knowledge (11)
  2. 7 a Old region of northern France now known for its cheese (4)
  3. 8 a Non-operational (8)
  4. 9 a Look out, I'm coming through! (7)
  5. 11 a Part of the leg (5)
  6. 13 a Negatively charged terminal of a battery (5)
  7. 14 a With alacrity (7)
  8. 16 a They're relatively poor (4-4)
  9. 17 a Citrus peel lining (4)
  10. 18 a Haulier (5,6)
  11. 1 d Cruel giant (4)
  12. 2 d Capitol (anag) — of present interest (7)
  13. 3 d Dazzling success (5)
  14. 4 d Suddenly grasped (8)
  15. 5 d Time to take a bow? (7,4)
  16. 6 d Exam overseer (11)
  17. 10 d Mechanical appliances (8)
  18. 12 d Out of control (7)
  19. 15 d Small growth protruding from a mucous membrane (5)
  20. 17 d Prepare (the way) (4)

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