Education
He attended Royal Academy of Dramatic Art, graduating in 2003 with a Bachelor in acting.
He attended Royal Academy of Dramatic Art, graduating in 2003 with a Bachelor in acting.
Born in Dublin, Ireland, his family moved to Lytham Saint Annes when he was six years old. After graduating, he appeared in Quartermaine"s Terms at the Royal in Northampton as Derek Meadle. In January 2005, he appeared as Richard in Rutherford & Son at the Royal Exchange in Manchester.
Later in 2005, he appeared again on Channel 4 in the crime drama series The Ghost Squad as Pete Maitland.
In December 2006, he starred in the two-part crime drama Losing Gemma on Independent Television. His first major television role came in October 2006 when he played Robin of Locksley, in the British Broadcasting Corporation"s 2006 series based on Robin Hood. During filming of the second series, (which aired in 2007) Armstrong broke a metatarsal bone in his foot during a staged fight scene.
He was a guest panelist on the British Broadcasting Corporation comedy panel game show Never Mind the Buzzcocks on 28 February 2007. In August 2008, the British Broadcasting Corporation confirmed that Armstrong would be leaving Robin Hood at the end of the third season, which aired on 27 June 2009, citing his statement that he was "looking for new challenges".
British Broadcasting Corporation replied to his words by explaining that "he"ll be desperately missed".
The show was subsequently not renewed for a fourth series. In 2008 he appeared in the horror film Book of Blood which is based on a short story by Clive Barker. He appeared in Episode 3 of the third series of British Broadcasting Corporation serial The Street broadcast on 27 July 2009, playing the role of TA soldier Private Nick Calshaw who returns from Afghanistan with a facial disfigurement and a prosthetic hand after being injured by a suicide bomber whom he was unable to shoot.
In January 2009, he read four CBeebies Bedtime stories on "The Bedtime Hour".