By Nick Atkins

Danish band Lukas Graham have beaten Justin Bieber to claim the biggest selling single of the year so far with 7 Years.

The track logged five weeks at the top end of the Official Singles Chart between February and March and to date has racked up combined chart sales of 857,000 including 39 million streams and 466,000 digital/physical sales.

7 Years also currently holds the biggest one-week combined sales figure for a No.1 single this year, shifting ...