A Royal Collection Trust staff member puts the finishing touches to a 20ft Nordmann fir tree in St George's Hall, as part of Christmas decorations being put up at Windsor Castle, Berkshire. (Photo by Yui Mok/PA Images via Getty Images)
A Royal Collection Trust staff member puts the finishing touches to a 20ft Nordmann fir tree in St George's Hall, as part of Christmas decorations being put up at Windsor Castle, Berkshire. (Photo by Yui Mok/PA Images via Getty Images)
A crown hangs on a 20ft Nordmann fir tree in St George's Hall, as part of Christmas decorations being put up at Windsor Castle, Berkshire. (Photo by Yui Mok/PA Images via Getty Images)
A Royal Collection Trust staff member puts the finishing touches to a 20ft Nordmann fir tree in St George's Hall, as part of Christmas decorations being put up at Windsor Castle, Berkshire. (Photo by Yui Mok/PA Images via Getty Images)
Royal Collection Trust staff members put the finishing touches to the Grand Staircase of the State Apartments, as part of Christmas decorations being put up at Windsor Castle, Berkshire. (Photo by Yui Mok/PA Images via Getty Images)
