Visitor numbers doubled, to 1,200 a day, as Downton Abbey, scripted by Julian Fellowes, came to be screened around the world after becoming a hit in the UK in 2010 and, then, in the US.

Visitor numbers doubled, to 1,200 a day, as Downton Abbey, written by Julian Fellowes, was shown around the world after becoming a hit in the UK in 2010 and, then, in the US.
