Aimée Ann Duffy (born 23 June 1984), known as Duffy, is a Welsh singer-songwriter and occasional actress. Her 2008 debut album Rockferry entered the UK Album Chart at number one. It was the best-selling album in the United Kingdom in 2008 with 1.68 million copies sold. The album was certified several times Platinum and sold over 6 million copies worldwide, spawning the hits "Mercy" and "Warwick Avenue". With "Mercy", Duffy became the first Welsh female in 25 years to achieve number-one on the UK Singles Chart.