The announcement was made via Twitter at 9:41pm BST on 31st March:
THIS JUST IN: The 'Doctor Who' veteran Murray Gold will be composing Torchwood: Miracle Day. BRILLIANT.Gold co-wrote music with Ben Foster for the first two series of Torchwood with the music being performed by the National Orchestra of Wales. He has also composed music for the computer-animated film, Hoodwinked Too! Hood VS. Evil which is due for release on April 29, 2011.