Who will be returning to Doctor Who for series 4?

Actor/ess / Character

David Tennant - The Doctor

Catherine Tate - Donna Noble

Kylie Minogue - Astrid Peth

Freema Agyeman - Martha Jones

Billie Piper - Rose Tyler

John Barrowman - Jack Harkness

Elisabeth Sladen - Sarah Jane Smith

Noel Clarke - Mickey Smith

Camille Coduri - Jackie Tyler