London crossword

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Across
  1. 2. Houses of _ _ _ _ (9)
  2. 4. big train station(10)
  3. 7. clock tower(6)
  4. 8. river flowing through London(6)
Down
  1. 1. colour of taxis in London(5)
  2. 3. big ferris wheel(9)
  3. 5. colour of most buses in London(3)
  4. 6. name of park near Buckingham Palace(7)