Huge Who Casting Spoiler!
io9.com has got hold of a, frankly huge, spoiler for David Tennants final days in the tardis… I won’t post it directly here, but if you want to see who Doctor Who is standing next to in the picture on the right, (LINK CONTAINS SPOILER! You have been warned) click here to see the full article!
I will say there is 1 person on the left and 1 on his right… the left one wearing clothing that’ll be familiar to fans of the show. The right one has been on the show before (albeit with a different hair colour.)