It’s the most Christmassy chart of the year: Santa's been and gone but the festive spirit continues to dominate a chart which reflects activity for the three days before Christmas, the three days after Christmas and Christmas itself.

After taking the Christmas chart title for the first time last week, 39 years after its debut, Last Christmas is No.1 for the fourth straight week and seventh week in total for Wham!. It does so with a huge 56.44% increase ...