Christmas crossword

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Across
  1. 2. Baby it's ... outside
  2. 4. Giuseppe's idea of a christmas cake
  3. 6. One of Santa's reindeer who shares their name with another holiday's icon
  4. 11. Donner and who?
  5. 12. Find this in your stocking if you've been naughty this Christmas...
  6. 13. The country that gifts Britain its Trafalgar Square tree each year
  7. 16. He gave 5 of what?!
  8. 18. Each one of these is individual
  9. 21. How will Christmas dinner be different after Brexit?
  10. 23. St Nicholas' nationality
  11. 24. Prickly decorative shrub
Down
  1. 1. The famous Christmas-related advertisement (not John Lewis - the other one!)
  2. 3. Au
  3. 5. These are brought to both you and your king
  4. 7. God's baby news messenger
  5. 8. The monarch who introduced Christmas trees to Britain
  6. 9. Rats reversing
  7. 10. Colour of Rudolph's nose
  8. 14. A cake but also the Hogwart's Christmas ball
  9. 15. A frosty fellow
  10. 17. Christmas across the channel
  11. 19. Mary and Joseph's home city
  12. 20. Gold, frankincense and what?
  13. 22. Use ‘us as mats’ (anagram)