Jenna Coleman has spoken about her decision to quit Doctor Who after 3 years – and the circumstances of Clara’s surprising exit.

At the weekend’s official Doctor Who Festival, the BAFTA-nominated actress revealed why now was the right time to depart the TARDIS.

Coleman also reflected on her time working with two different Doctors – or should that be 13? – and whether she would consider a return to the sci-fi series.Speculation over who will be the next Doctor Who companion is rife – with Ingrid Oliver’s amiable Osgood topping a Digital Spy poll.

However, Oliver has played down rumours linking her to a permanent stay aboard the TARDIS, while Who showrunner Steven Moffat has also insisted the show’s new co-lead will be an entirely new character.

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.