CPH Advent Calendar

The Picture House Advent Calendar quiz/puzzle has a new clue each day with the answer being one of the top box office movies of the year. Answers should appear the next day but sometime don't :-)
This is today's clue (because it was very wet and windy and we have a yellow wind warning again !!) with Fergus perusing in reflection.
Clue is a pic of Paul McCartney and a bottle of Iron Bru.
I got it right away. Can you ?