General knowledge crossword

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Across
  1. 3. The royal family's Scotland home (8)
  2. 4. North American country (6, 6)
  3. 8. Brick-based toy (4)
  4. 9. O on the periodic table (6)
  5. 12. Academy Awards (6)
  6. 14. ........ Histories, TV show (8)
  7. 15. Captial of Spain (6)
  8. 16. Ant & Dec's accent (7)
  9. 17. River that runs through Egypt (4)
Down
  1. 1. ...... Harris, US vice-president (6)
  2. 2. TV show starring the late Matthew Perry (7)
  3. 5. English city, known for its steel (9)
  4. 6. ...... Swift, singer (6)
  5. 7. ...... Ranganathan, comedian (6)
  6. 10. Location of 1066 battle (8)
  7. 11. David ......., Prime Minister 2010-2016 (7)
  8. 12. Large sporting event (8)
  9. 13. programming language, popular with snakes (6)