Dad's Christmas Cryptic Crossword

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Across
  1. 4. Silver pirate’s leggings (4, 5)
  2. 5. Anchovy’s in contorted blue bottoms (4, 6)
  3. 7. Steam ugli-fruit inside 'boil in the bag' receptacle (3, 3)
Down
  1. 1. Two sausages are the new home assistant (9)
  2. 2. They’re worn on the legs, front of the jaw, and nose, essentially (6)
  3. 3. Cavalryman’s horse; a royal gallant’s equine, rears at first? (7)
  4. 6. Joe to confess audibly with constant energy (6)