Taylor Swift has the No.1 single for the 22nd time in her career, and for the second week in a row, with Patient Zero remaining in pole position.

It wasn’t all plain sailing for Swift, however: in common with the three other tracks on the new Encore edition of her album, The Life Of A Showgirl, Patient Zero suffered a dip in consumption week-on-week, and would have been unable to fight off an attempt to retake the title by former ...