This or That?

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Across
  1. 1. London borough home to Europe's longest street market
  2. 4. A kind of slow drying paint
  3. 5. Stereotypical features of Viking helmets
  4. 6. Yorkshire birthplace of David Hockney
  5. 7. 'Ways of [...]', Berger book
Down
  1. 2. Guacamole ingredient
  2. 3. Tree where birds sing, in “Dream a Little Dream of Me”
  3. 4. A good excuse for a free drink