Highwaymen, cat people and Winston Churchill.
And of course, the Catkind of Earths future have made several appearances since their debut in 2006sNew Earth.
Clara is largely absent for this episode, having seemingly taken time off to learn tae kwon do.
He returned for one more adventure inThe Stolen Earth/Journeys Endthe following year.
The Doctor helps one of Claras pupils by taking her to meet Winston Churchill.
She left in the following episode.
The Doctor also refers to Leandro as Lenny the Lion.
He also appeared alongside Maisie Williams on-screen brother as the Three-Eyed Raven inGame Of Thrones.
Meanwhile, Sam Swift is played by comedian and actor Rufus Hound.
