LONDON (AFP) - Troubled British singer Amy Winehouse was divorced from her estranged husband, Blake Fielder-Civil, in London on Thursday after two years of marriage, her spokesman said. The 25-year-old won five Grammy awards off the back of her debut album Back to Black and the hit single Rehab, but has since been engaged in a well-publicised struggle with drugs. Fielder-Civils spokesman said in January that the 27-year-old had begun divorce proceedings against Winehouse on the grounds of Amys adultery. The couple married in Miami in May 2007 but have had a tempestuous relationship, while Fielder-Civil spent much of last year behind bars for a vicious attack on a pub landlord and a subsequent attempt to cover it up. Neither party was present for the divorce proceedings on Thursday. Winehouses spokesman confirmed the divorce, but made no further comment.