The British electricity supply industry was nationalised in 1948 under the provisions of the Electricity Act 1947 (10 & 11 Geo. 6 c. 54). The St Helens electricity undertaking was abolished, ownership of St Helens power station was vested in the British Electricity Authority, and subsequently the Central Electricity Authority and the Central Electricity Generating Board (CEGB). At the same time the electricity distribution and sales responsibilities of the St Helens electricity undertaking were transferred to the Merseyside and North Wales Electricity Board (MANWEB)
