David Tennant tonight returns to his role as the Doctor and meets his brand-new companion in the highly anticipated third series of Russell T Davies’s Doctor Who.

For Martha Jones, a medical student in Central London, an ordinary day turns into a nightmare when her entire hospital is transported to the Moon. There, she has to battle the Judoon and outwit a blood-sucking Plasmavore – but can she trust a mysterious stranger called the Doctor?

David Tennant plays the Doctor and Freema Agyeman plays his new assistant, Martha Jones.