1948 The government introduced the Gas Act, which nationalised the UK gas industry and the 1,064 privately owned and municipal gas companies were merged into twelve area gas boards each a separate body with its own management structure. Overall there was the Gas Council. Each area board was divided into geographical groups or divisions which were often further divided into smaller districts. These boards simply became known as the "Gas Board", a term people still used when referring to British Gas when the Gas Act 1972 was passed, the boards becoming Regions of the British Gas Corporation.
The 12 Area Gas Boards were -