Babyshambles lead singer Pete Doherty, who had an on-off relationship with supermodel Kate Moss, has been arrested on suspicion of possessing illegal drugs — just days after pleading guilty to possessing heroin and cocaine.

The 26-year-old rocker was stopped by police on Saturday morning and arrested on suspicion of possessing a Class A and a Class C drug, police said.

He was released on bail and ordered to appear at a north London police station on February 2 "pending analysis of substances" found, a Scotland Yard spokeswoman said.

The maximum sentences for possession of a Class A drug is up to seven years in prison and/or an unlimited fine.

Media reports say Doherty and Moss have split up.