Murray Gold
From Tardis Wiki, the free Doctor Who reference
Murray Gold is the composer for the revived series of Doctor Who. He has made two editions of the theme music and has composed all the incidental music for Doctor Who as well as major work on music for Torchwood and The Sarah Jane Adventures. He has also written three songs for the series: Song For Ten ("The Christmas Invasion"), Love Don't Roam ("The Runaway Bridge") and The Stowaway ("Voyage of the Damned"). Two soundtracks for Doctor Who featuring his music have been released.