Seen the show? Now visit the location: Britain embraces surge in ‘set-jetter’ tourists

International visitors are pouring in to see where Wonka walked and Herriot practised

Set-jetting - flying off to see where a favourite movie was filmed - has long been a small but important tourism niche.

But while feature films such as Wonka and Napoleon are boosting visitor numbers in Bath and Blenheim, the growth of TV streaming is also fuelling a rise in screen tourism that is expected to transform the pastime into big business next year.