UK vs US English

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Across
  1. 6. - underground
  2. 7. - motorway
  3. 8. - petrol
  4. 11. - holiday
  5. 13. - check
  6. 15. - pavement
Down
  1. 1. - queue
  2. 2. - handbag
  3. 3. - tap
  4. 4. - chemist's
  5. 5. - railway
  6. 9. - chips
  7. 10. - shop
  8. 12. - biscuit
  9. 14. - post