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Across

    1  Big shot who knows it and acts that way (7)

    5  Brightest star in Cygnus (5)

    8  Tracts of land declared by the national government to be public property (8,5)

    9  Sense organ for equilibrium (3)

  10  Cheshire town and Prince Edward Island village (9)

  12  A cross-rib or branch-rib in vaulting (6)

  13  Barbs on a harpoon or arrow (6)

  15  Conveyer belt that carries luggage to be claimed by air travellers (9)

  16  Unit of absorbed ionizing radiation equal to 100 ergs per gram of irradiated material (3)

  18  Site named after the fourth President of the United States and co-author of the United States Constitution (7,6)

  20  Person born in the United States of parents who emigrated from Japan (5)

  21  Involving hard labour in the past (7)

Down

    1  Silk cloth made in Ghana by sewing together lots of strips (5)

    2  130-mile long archipelago to the northwest of Scotland (5,8)

    3  Single malt Strathspey whisky (9)

    4  Shag rug made in Sweden (3,3)

    5  Lower and raise a flag again (3)

    6  Network of freshwater lakes and slow moving rivers in East Anglia, UK, formed by the gradual natural flooding of medieval peat diggings (7,6)

    7  As well (7)

  11  Dramatic speech intended to give the illusion of unspoken reflections (9)

  12  Dealer in looped or knotted ornamental fabric (4-3)

  14  System of newsgroups on the Internet (6)

  17  Series of mental images and emotions occurring during sleep (5)

  19  Of himself in Latin (3)

Here is last week’s solution: