Doctor Who producers are to make a special announcement, very early on Monday morning.

According to the BBC One sci-fi drama’s official Twitter feed, an “iconic” star will be confirmed at midnight.

The post read: "Casting news! An iconic star will be appearing in #DoctorWho and we've been granted permission to reveal who at midnight… See you at 00:00!"

Doctor Who will return with its seventh season premiere, Asylum of the Daleks, in August.