Clue Number 1

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Across
  1. 3. what is the busiest airport in Britain?
  2. 6. what team came before Renault in F1?
  3. 7. how old is Arthur?
  4. 8. the capital city is Tirana
  5. 9. how many time zones are there in Russia?
  6. 10. what was Istanbul called before 1930?
  7. 13. what is the capital of Belgium?
  8. 15. how many keys are there on a piano?
  9. 16. 1 squared
  10. 17. What colour are the seats in the House of Commons?
Down
  1. 1. what play does Banquo come from?
  2. 2. the language spoken in brazil
  3. 4. what gets more snow - the swiss alps or the australian alps?
  4. 5. the most sold flavour of Walkers crisps
  5. 10. what is gouda?
  6. 11. what number is a baker's dozen?
  7. 12. what does m stand for in the equation: y=mx+c
  8. 14. the element formed after the beta decay of carbon