Robert Dallas Campbell (born 17 September 1970) is a British television presenter and television and stage actor, best known as a presenter on the factual Channel 5 series The Gadget Show in 2008.

His television presenting career began on The Gadget Show (Channel 5) followed by BBC One’s prime time science magazine show Bang Goes The Theory. He recently completed The Treasure Hunters for BBC One with Ellie Harrison which saw them on the trail of earth’s most prized and valuable treasures both natural & man-made.

He later joined the factual BBC One Science series Bang Goes the Theory in 2009, but later left the programme in 2012.

Dallas hosted Dr Who’s 50th Anniversary celebrations at London’s ExCel Arena, Stargazing Live, and a two-summer national tour of Bang Goes the Theory.