Career
He represented Great Britain at the 2012 Summer Paralympics. Butterworth lost his left arm in 2007 in an insurgent rocket attack when serving as a senior aircraftman weapons technician with the Royal Air Force at Basra airbase in Iraq. He had previously served in Afghanistan in 2005.
Butterworth got into cycling by taking part in the first Help for Heroes bike ride in 2008, from there he went on to be recognized as talented at a ParalympicsGB Talent Idaho day
In the kilo, his C5 world record was beaten by Alfonso Cabello.