There will be a special tribute to the actress Elisabeth Sladen tonight on CBBC at 6.45pm immediately after Doctor Who finishes on BBC1.
Elisabeth starred as Sarah Jane Smith opposite two Doctors, Jon Pertwee and Tom Baker. She later reprised her starring role in Doctor Who in both The Five Doctors, and in School Reunion acting opposite the Tenth Doctor David Tennant.
She later got to meet the Eleventh Doctor Matt Smith when he guest starred in her series The Sarah Jane Adventures, in an adventure called Death of the Doctor, which guest starred her predecessor in Doctor Who, Katy Manning as Jo Grant.
Lis will be sorely missed, not just by the children who currently watch The Sarah Jane Adventures but the adults who were kids when she first appeared as Sarah Jane Smith in Doctor Who.