HTML clipboardAFP, LONDON- British pop singer Amy Winehouse has been cautioned after admitting an assault on a night out in London, police said Saturday.

Winehouse, known for songs including "You Know I'm No Good" as well as her troubled private life, reportedly headbutted one man and punched another as she tried to hail a taxi.

A spokesman for the Metropolitan Police said she had been cautioned for common assault, meaning she has admitted the offence and now has a criminal record.

Winehouse, 24, was held at a central London police station overnight but left Saturday. She now faces no further action over the attack, which took place in the north London district of Camden in the early hours of Wednesday.

The Grammy award winner, whose album "Back To Black" includes the hit "Rehab", has fought a very public battle with alcohol, drugs, self-harm and an eating disorder.

She was charged with possessing cannabis in Norway last year and is awaiting a court appearance over the allegation. Winehouse's husband, Blake Fielder-Civil, 25, is currently on remand in prison awaiting trial on charges of assault and conspiracy to pervert the course of justice.

He was brought to court in northeast London Friday for an administrative hearing. Unlike previous appearances, his wife was not there to provide support.