U.K. population distribution

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Across
  1. 1. adjective applying to towns and cities
  2. 4. adjective applying to the countryside
  3. 5. advantage
  4. 8. historical business district of London
  5. 10. number of people per square kilometer
  6. 11. represented by arrows on a map to show movements
  7. 12. tallest building of the U.K.
Down
  1. 2. capital city of Northern Ireland
  2. 3. central place to which converge flows
  3. 6. rivers that flows through London
  4. 7. northernmost nation of Great Britain
  5. 9. far from everything