A lawyer entered a guilty plea on Doherty's behalf during a hearing before magistrates in Lowestoft, Suffolk, according to the Press Association.

In February the rock star's manager Andrew Boyd was given a 12-month jail term after a court heard he ran into a pedestrian delivering local newsletters then drove off at speed in the car.

Boyd, 42, admitted a string of motoring offences including dangerous driving, failing to stop at the scene of an accident and driving without a license or insurance during a hearing at Ipswich Crown Court onFebruary 24.

The pedestrian suffered "catastrophic" brain injuries and was left in a coma, the court heard.

Thursday's ruling was the latest setback for Doherty, 30, who once dated supermodel Kate Moss.

In January he was fined after being caught with heroin in his pocket at a December court hearing for a case related to careless driving.