The Last Days of Dolwyn [1949] [DVD]

A peaceful North Wales village is about to disappear once and for all under the waters of a dam that is going to be built by a powerful water company commanded by a city businessman, at one time a local resident of the place. It's time for the simple villagers to take action and try to save the only place they know and love.

Note, there was a Studio Canal release of this in 2013 but it doesn't do the film justice. You can preview the quality of this version by watching this mp4.