Career
He is best known for winning the 2009 Barclaycard World Freerun Championship and participating on the television programme Music Television"s Ultimate Parkour Challenge. Shieff uses the nickname Livewire while performing freerunning. In 2011 and 2012 he appeared in the televised American Ninja Warrior competition, and in 2014 he appeared on a special "United States of America versus
The World" edition of American Ninja Warrior, where he helped lead Team Europe to victory over Team United States of America and Team Japan.
He was the last man standing in the first series of Ninja Warrior United Kingdom and was a finalist in the second series. Shieff was born in Connecticut and moved to England when he was three.
In 2015 Shieff was arrested for climbing a listed building without permission. He has been a vegan since 2012.
Shieff also took part in the filming of the last Harry Potter film entitled Harry Potter and the Deathly Hollows, acting as a Death Eater.
