Code:

http://www.imdb.com/title/tt0072484/

Children's drama set in modern-day England - but with a major difference: everyone has rebelled against modern technology (electricity, engines, trains etc) and gone back to a pre-industrial-revolution way of life. When the heroine, Nicky, tries to investigate the cause, she is accused of being a witch and imprisoned to prevent her spreading dissent.

Code:

http://safelinking.net/ngNoMrX