Actor David Tennant remembers Sladen
21 April 2011 Last updated at 10:19 BST
Former Doctor Who actor David Tennant remembers Elisabeth Sladen following her death at the age of 63.
Sladen appeared as Doctor Who assistant Sarah Jane Smith in the BBC television sci-fi series between 1973 and 1976, opposite Jon Pertwee and Tom Baker.
In 2006 she returned to the "Whonoverse" to appear opposite Tennant's Doctor, a role that led her to star in spin-off series The Sarah Jane Adventures.