BBC Four's head from Channel 4

Roly Keating left BBC Four for BBC Two

Channel 4's Janice Hadlow has been appointed as controller of digital channel BBC Four.

She replaces Roly Keating who has moved up to be the new controller of BBC Two, in place of Jane Root.

Ms Hadlow is currently head of specialist factual at Channel 4 and has worked for the BBC before.

She said: "I'm extremely honoured to be taking up the role of controller. It's a channel I admire enormously for its wealth of unique programmes."

Among her successes at Channel 4 were David Starkey's Six Wives and Elizabeth, as well as The 1940s House.

On the arts side, she commissioned Operatunity and the Death of Klinghoffer, an opera based on the hijacking of the Achille Lauro cruiseliner.

Joining the BBC as a production trainee in 1986, Ms Hadlow worked as a producer on Radio 4 programmes such as Woman's Hour, Start The Week and The World Tonight, before working her way up to editor of the Late Show.

Ms Hadlow was made deputy head of the BBC's music and arts department, being appointed joint head of history before moving to Channel 4 in 1999.

BBC Four launched in March 2002 and shows a mix of arts, current affairs, history, science and philosophy, as well as performance, drama and world cinema.