British singer Amy Winehouse has been cautioned after admitting an assault on a night out in London police said on 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 from 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 on 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.