He was also the understudy for the role of Ritchie Valens in the UK national tour of Buddy, The Buddy Holly Story.
Ballas played an extra in Harry Potter and the Sorcerer's Stone as part of the Hufflepuff House.
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Peacock's victory in the T44 100m in 2012 in a record 10.90sec was the stand-out moment of the London Paralympics, with a capacity crowd in Stratford chanting his name.
He contracted meningitis aged five leading to the amputation of one leg below the knee.
Ballas is a professional ballroom dancer on the ABC program Dancing with the Stars.
He began competing on the show in the fall of 2007.
He was nominated for an Emmy for Outstanding Choreography in 2011.