In recent years he has broadened his audience thanks to his involvement with Wilco on the album Mermaid Avenue and its follow-up Mermaid Avenue Vol II.
From Wikipedia:Stephen William Bragg (born 20 December 1957), known as Billy Bragg, is an English alternative rock musician and left wing activist who blends elements of folk music, punk rock and protest songs, and his lyrics mostly deal with political or romantic themes. His music career has lasted more than 30 years, and he has collaborated with Natalie Merchant, Johnny Marr, Hank Wangford, Florence and the Machine, Kate Nash, Leon Rosselson, members of R.E.M., Michelle Shocked, Less Than Jake, Kitty Daisy & Lewis, Kirsty MacColl, and Wilco. Bragg often plays and speaks at the Tolpuddle Martyrs festival. Bragg Close, a street in Dagenham, is named in his honour, and he currently lives in Dorset.