DOCTOR WHO'S DAVID TENNANT ON WHY IT'S "VERY HARD" TO PICK NEXT DOCTOR

© BBC Doctor Who's David Tennant has explained why it will be "very hard" to pick next Doctor. David Tennant has offered his thoughts on why it will be "very hard" to pick the next Doctor on Doctor Who.The actor knows a little something about the pressure of such an important decision, having stepped in for Christopher Eccleston as the 10th Doctor for the 2005 Christmas special.N...

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