Steven Moffat has revealed that Doctor Who's next companion doesn't even have a name yet - but told Digital Spy that the new character will fundamentally change the series.

Moffat explained that the character is in "quite early stages" - but that he has already pitched the companion and the arc of series 10 to the BBC.

In our video interview - recorded at the official Doctor Who Festival this past weekend - Moffat and series lead Peter Capaldi also reflect on the departure of Jenna Coleman as Clara.

"It's going to be pretty bad this time," Moffat warned. "It's gonna knock the Doctor for six."

BBC

For more scoop - including an update on production of series 10 - hit play on the clip above.

Doctor Who continues this Saturday (November 21) at 8.10pm on BBC One, with 'Face the Raven'.

Doctor Who - Series 9, Part 1 is available now on DVD and Blu-ray. New episodes are also available to purchase via the new BBC Store.

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