Professor Green's rap sheet for EMI

The rapper Professor Green has launched an attack against his record company EMI, accusing executives of damaging his career by "not doing their jobs properly".

The Hackney performer, who scored a number one with "Read All About It", told his Twitter followers: "Why would your own record label hinder you? How would you feel if a company taking 25% of your earnings weren't doing their jobs properly?"

Green, whose real name is Stephen Manderson, complained that his follow-up single, "Never Be A Right Time", which only reached number 35 in the chart, had been "rushed", while the video for his song "Remedy" was "a month late" and that "similar problems with the [new single] Avalon video unfold".

When fans suggested he must be a millionaire anyway, Green, 28, took the unusual step of breaking down his earnings.

"A live gig = 10% to agent, costs and expenses, 20% management commission then 25% to a label who hardly even come to gigs let alone help," he wrote. Green is signed to the EMI-owned Virgin label, which may be sold off as part of a £1.2bn takeover by Universal Music.

The musician asked: "If everyone at EMI is quaking in their shoes about their jobs because of the Universal situ, why not do your jobs properly? Simple solution?"

Green's outburst prompted support from Josh Franceschi of You Me At Six, the Virgin-signed rock band.

EMI declined to comment on the artist rebellion.