Brian Hodgson
From Tardis Wiki, the free Doctor Who reference
Brian Hodgson provided the special sounds, or sound effects, for "An Unearthly Child." He is credited with creating the distinctive sound of the TARDIS dematerializing, which has been used throughout the Doctor Who television series. Hodgson appeared in the documentaries, "The Story of Doctor Who" and "Talking Daleks." His other major credits include the music and sound effects for "The Tomorrow People" and "The Legend of Hell House."