The new series of 'Sherlock' was inspired by the lost 'Doctor Who' episodes.
Matt Graviss - who has written and acted in both shows - admitted the first episode of the new run borrowed its setting of the London Underground from 'The Web of Fear', which originally aired in 1968.
He said: "I am obsessed with the Tube and I think it all comes from that story when I was a kid.
"The first episode of Sherlock is explicitly about the London Underground for exactly that reason - because I love 'The Web of Fear!' "
And he is delighted to have the lost episode back in the open the year of the science fiction show's 50th anniversary, admitting it is fantastic to have the two stories - including 'The Enemy of the World' - rediscovered almost completely.
He added: "I can't really believe it. Every single avenue seemed to have been exhausted - to have two virtually complete stories out of the blue is absolutely incredible.
"This is such a gift in this anniversary year - it's amazing timing."
Tagged in Benedict Cumberbatch Sherlock