Speaking to io9, the showrunner explained: “I mean we can see her again because everything’s out of sequence and clearly the implication is that she’s met more than two Doctors. But the question is whether or not we should [revisit her].”

He added: “It’ll now be story-driven. If we’ve got an idea that she fits into perfectly then there’s no reason why we can’t do it, but I quite liked where we got to at the end of ‘The Name of the Doctor’, with [the Doctor] saying goodbye to her. So we’ll see.”

Alex Kingston made her debut as River Song in 2008’s ‘Silence in the Library’ and has appeared in a total of 14 episodes.

Jenna Coleman has recently confirmed that Series 8 will begin filming at the start of next year.

> Catch up on all the 50th Anniversary Special news and rumours so far in our summary.

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> Order the complete Series 7 boxset on Amazon.

Watch the Series 7 Part 2 trailer…