Professor Green has launched an attack on his own record label, EMI.

On Twitter he began his rant: "Why would your own record label hinder you? Answers on a postcard."

He continued: "I just can't help but question why some people have jobs. All I do is work, so I get extremely p***** off when people don't do theirs."

"Dignified silence is pointless. A rushed second single, the Remedy video a month late and now similar problems with the Avalon video unfold. How would you feel if a company taking 25% of your earnings weren't doing their jobs properly? Would you pay someone not doing their job?"

It is not the first time Pro Green has caused controversy on Twitter. He recently called Kristen Stewart a "cheating s***b**".