Troubled British soul singer Amy Winehouse was arrested on Tuesday as part of an investigation into perverting the course of justice, London police and her publicist said.

The 24-year-old, whose husband Blake Fielder-Civil is being held on remand accused of inflicting grievous bodily harm and conspiracy to pervert the course of justice, went to a London police station to be arrested in agreement with police.

"It was voluntary and pre-arranged," a representative at her publicity agency said, asking not to be quoted by name.

In a statement, London's Metropolitan police said: "A 24-year-old woman has been arrested by appointment at an East London police station in connection with an investigation into perverting the course of justice. She remains in custody."

Winehouse, nominated for six Grammy awards, has struggled with drugs and alcohol since shooting to fame. She was pictured this month wandering the streets of London at dawn in only a bra and jeans.

The tattooed singer has cancelled all her remaining planned concerts this year saying she cannot perform while her husband is in jail.

Fielder-Civil, 25, was charged in November in an investigation into perverting the course of justice, days before he was due to go on trial for beating up a bartender.

The trial was delayed after police launched an investigation into allegations made by British newspaper The Daily Mirror that the bartender was offered money not to testify.

Winehouse's parents have made repeated calls for their daughter to seek help, fearing that she could be sucked into a cycle of drugs and trauma.

"We want to help you, but we know that unless you want to be helped, unless you come to us, anything we tried would be in vain," her mother, Janis Winehouse, wrote in a letter published by the News of the World newspaper last week.

"Early fame has overwhelmed you, it's dizzied you and muddled your mind."

Winehouse scored a hit last year with the song "Rehab" about refusing treatment for drugs and alcohol.

She and Fielder-Civil, who married earlier this year, were arrested in Norway in October for possessing cannabis and paid a fine.