
Harry Treadaway was born in Devon, England and raised in Sandford, near Exeter, Devon with his father, an architect, his mother, a primary school teacher, and two brothers - his slightly older twin Luke and their older brother Sam, an artist. As a young teenager he played in a band called Lizardsun which he formed with his brother, as well as Matt Conyngham and Seth Campbell. Treadaway attended Queen Elizabeth's Community College in Crediton. He trained at The London Academy of Music and Dramatic Arts and is a former member of the National Youth Theatre.
His professional debut was
Brothers of the Head, a feature film about conjoined twin brothers in a punk rock band. Harry played Tom Howe, the band's rhythm guitarist and song-writer, and his brother Luke played Barry Howe, the lead singer. During rehearsals and throughout the shoot, Harry and Luke were connected to each other for fifteen hours a day, wearing sewn-together wetsuits or a harness. They also slept in one bed to simulate the conjoined nature of their characters. The Treadaways performed all tracks featured in the film themselves live on stage, as well as recording nine tracks for the sound-track album. Treadaway took time out from his course at LAMDA to work on
Brothers of the Head, and graduated in 2006.
Treadaway took on other professional commitments while still at drama school including
Miss Marple: Sleeping Murder for ITV television, and a reading of a new play,
Myrna Molloy for Operating Theatre Company in 2006.
Since graduating, he has taken on work such as
Recovery for Tiger Aspect (playing the son of characters played by David Tennant and Sarah Parrish) and as Mark Brogan on the
Channel 4 series
Cape Wrath (known as
Meadowlands in America). In
Control Harry plays Joy Divison drummer Stephen Morris. In 2008 he appears in the Channel 4 drama
The Shooting of Thomas Hurndell, and a short film by Sam Taylor Wood. Harry's last two films were
The Disappeared and
City of Ember.