Actor David Tennant has said that his former co-star Billie Piper could be the next Doctor Who.
The actor announced last week that he will no longer by playing the role of The Doctor in the BBC science-fiction show.
Speaking on 'BBC Breakfast' today, Tennant suggested that Piper could take on the role, asking: "Why not?".
"It's one of those parts that any actor could bring something valid to, because it can be anything and it's a sort of blank canvas everytime."
"The fact is that the difference is a virtue with each Doctor, it's not like you're casting Tarzan where you've got to have somebody who looks good in a loin cloth, it can be anything."
