Dunstan is a British musician and filmmaker who is perhaps best known for his work with Leeds based anarcho-punk band Chumbawamba of which he was a founding member.  At the beginning of 1982, he joined Chumbawamba and was the lead singer of the band's biggest hit single, Tubthumping. (It peaked at number six on the US Billboard Hot 100.) He left the band at the end of 2004. He is the lead singer of Interrobang?!, an agitprop post-punk band he formed in 2012 with ex-Chumbawamba drummer Harry Hamer and ex-Regular Fries guitarist Stephen Griffin. They released a critically acclaimed eponymous album in 2018. He also has been directing documentaries, his latest was about his former band and titled, "I Get Knocked Down."