100 metres per second.
The Doctor is one of the world's leading skateboarders. He speciality is speed. This footage has been captured on a high speed camera, the type used to film bee flight. Look very closely and he appears in the top right of the scene and exits bottom left. The whole sequence has been slowed down, but in real time lasts just 0.1 second. In fact if you look at the shoppers, none of them even have time to move.