A huge visual effect shot of an alien rollercoater/themepark world. It appears to be deserted and damaged Judging by the characters below the park I would say this is from episode 12, The Last Cyberman.
The Doctor from episode 6, The Bells of St. John, outside Clara's house that shes working at, Later we will see her exit the house with a cup of tea, and have a sit down with the Doctor.
Warwick Davis, playing his character Porridge, a pilot from episode 12, The Last Cyberman. He is known to be on the same mission as Clara at one point, and helps against the Cybermen.