HC Deb 22 April 1918 vol 105 c808

Resolved, 20. That Excess Profit Duty under Part III. of the Finance (No. 2) Act, 1915, as amended or extended by any subsequent enactment, shall, unless Parliament otherwise determine, be charged for any accounting period ending on or after the first day of August nineteen hundred and eighteen, and before the first day of August nineteen hundred and nineteen.