Selling 148,532 copies last week, In Case You Didn't Know is the first number one by an X Factor contestant since Diana Vickers' Songs From The Tainted Tree topped the list in May 2010. Albums by G4, Steve Brookstein, Journey South, Shayne Ward, Ray Quinn, Leona Lewis (two), Alexandra Burke and JLS have also reached number one.

In Case You Didn't Know's triumph comes a year to the week after Murs' self-titled debut album entered and peaked at number two, ...