In 1960, a private bill sponsored by Liverpool City Council was brought before Parliament to develop a water reservoir in the Tryweryn Valley. The development would include the flooding of Capel Celyn. By obtaining authority via an Act of Parliament, Liverpool City Council would not require planning consent from the relevant Welsh local authorities and would also avoid a planning enquiry at Welsh level at which arguments against the proposal could be expressed. This, together with the fact that the village was one of the last Welsh-only speaking communities in the area,