http://www.legislation.gov.uk/id/ukpga/Eliz2/4-5/54

http://www.legislation.gov.uk/ukpga/Eliz2/4-5/54/section/39

Finance Act 1956

An Act to grant certain duties, to alter other duties, and to amend the law relating to the National Debt and the Public Revenue, to authorise advances out of the Consolidated Fund to nationalised industries and undertakings, and to make further provision in connection with Finance.