New Dr Who to be revealed

'Dr Who' fans find out the identity of the next Timelord tonight.

The actor taking over from David Tennant is revealed in a special programme.

There's speculation it could be the first female or first black doctor.

Names such as Paterson Joseph, Robert Carlyle and Catherine Zeta Jones are in the frame.

Antony Wainer from the Dr Who Appreciation Society says the next star of the show has big shoes to fill.