Impossible singer James Arthur has hit out at The Voice UK coach will.i.am.

In a recent interview, Black Eyed Peas frontman, willi.am, claimed to never have heard of the X-Factor star, saying: "Who's James Arthur?"

However, Arthur didn't take the comments lying down and took to his Twitter page to take a swipe and the Scream & Shout singer, writing: "Who's James Arthur?" .. He was the dude keeping you off the top spot for weeks.. Sights set higher than the voice #whereisthelove"

The Voice UK returns for a second series on March 30.