Series 4 Cast

This is the cast of series 4 confirmed so far:
David Tennant as The Doctor
Catherine Tate as Donna Noble
Freema Agyeman as Martha Jones
Billie Piper as Rose Tyler
John Barrowman as Jack Harkness
Elisabeth Sladen as Sarah Jane Smith
Bernard Cribbins as Wilfred Mott
Jacqueline King as Sylvia Noble
Fernella Woolgar as Agatha Christie
Sarah Lancashire as Miss Foster
Christopher Ryan as General Staal
John Leeson as K-9
Alex Kingston as River Song
Georgia Moffett as Jenny

Some people are of course not on this list because they have either they have not been confirmed or because I forgot (could'nt be bothered) to add them.