His decision comes after the network 's viewership dropped below that of the BBC , and following the collapse of ITV Digital .
David Liddiment announces he will step down as ITV 's head of programming .
David Liddiment 's decision comes after the network 's viewership dropped below that of the BBC , and following the collapse of ITV Digital .
David Liddiment announces he will step down as ITV 's head of programming .