<Dl> <Dd> For the U.S. series of the same name, see Who Do You Think You Are? (U.S. TV series). </Dd> </Dl> <Dd> For the U.S. series of the same name, see Who Do You Think You Are? (U.S. TV series). </Dd> <P> Who Do You Think You Are? is a British genealogy documentary series that has aired on the BBC since 2004 . In each episode, a celebrity traces their family tree . It is made by the production company Wall to Wall . The show has regularly attracted an audience of more than 6 million viewers . More than ten international adaptations of the show have been produced . </P> <P> Series one and two were broadcast on BBC Two, and the first was the channel's highest - rating programme of 2004 . This led to episodes being shown on BBC One from the third series onwards . The current narrator, as of Series 14 in 2017, is Phil Davis . Mark Strong took over from David Morrissey after the first series, which was nominated for "Best Factual Series or Strand" in the 2005 BAFTAs; Cherie Lunghi was the narrator between Series 10 and 13 . </P>

Who produces who do you think you are