A meeting in a London bus with jewel thief Lady Christina takes a turn for the worse for the Doctor when the bus takes a detour to a desert-like planet, where the deadly Swarm awaits.

A group of people are plunged into a dark, claustrophobic maze, where they must fight to survive, as the outside world watches.

A group of Cockneys arm themselves to rescue their elderly relative and his retirement home friends who are trapped and fighting off a zombie attack during a zombie apocalypse in the East End of ...