Other artists in the top five in previous years include Florence and the Machine and La Roux (Sound of 2009), Duffy and the Ting Tings (Sound of 2008), Klaxons (Sound of 2007), Bloc Party (Sound of 2005), Franz Ferdinand (Sound of 2004) and Dizzee Rascal (Sound of 2003).

BBC: Sound of 2011 list revealed

Other artists in the top five in previous years include Frank Ocean (Sound of 2012), The Vaccines (Sound of 2011), Marina and the Diamonds (Sound of 2010), Florence and the Machine (Sound of 2009), Foals (Sound of 2008) and Plan B (Sound of 2006).

BBC: Haim top BBC Sound of 2013 list

Epworth, whose list of clients includes U2, Plan B, Cee-Lo, and Primal Scream, won the producer of the year award in 2010, after co-producing Florence and the Machine's debut album, Lungs.

BBC: Florence producer Paul Epworth scoops Brit prize