The Changes was broadcast in early 1975 and was one of the BBC's first post-apocalyptic TV series which paved the way for the likes of Survivors and Day of the Triffids.

The children's TV series depicted the breakdown of society after people are compelled to reject and destroy technology such as cars, bicycles and alarm clocks. This violent reaction and people's subsequent desertion of the country is triggered by a sound seemingly emitted by electricity pylons.

Schoolgirl Nicky Gore played by Victoria Williams is caught amidst the chaos and gets separated from her parents who are heading to France in the hope of finding safety.

Throughout the course of the 10-part series we follow Nicky's journey to be reunited with her parents and seek an answer to the cause of The Changes.