August 12, 2011
Group formed during season eight of Britain's The X Factor that would sign with Simon Cowell's Syco Music after winning the competition. They had earned four platinum-certified albums and eleven certified singles in the UK as of 2016.
They opened for Ariana Grande's Dangerous Woman Tour in 2017. They won 2015 and 2016 Teen Choice Awards as well as Brit Awards in 2017 and 2019.