Pete Doherty was a member of the Libertines until they split in 2004

Babyshambles singer Doherty, 26, was stopped while driving a car in Ealing, west London, early on Wednesday.

A police spokeswoman said officers stopped the vehicle because it was being driven "in an erratic manner" and recovered "substances" from the scene.

Doherty was taken to a west London police station and released on bail. He is due to report back in January.

The spokeswoman said police had stopped a car in Cleveland Road, Ealing.

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"Substances were recovered from the 26-year-old male driver and the vehicle," she said.

"He was arrested for alleged possession of class A drugs.

"He was taken to a west London police station and later bailed to return pending further inquiries."

Doherty has recently had an on-off relationship with model Kate Moss.