Excise relief for high density polyethylene strips: duty not required to be paid where short-levied due to prevailing practice. The Government directs that, for high density polyethylene strips and like synthetic textile material intended for stitching sacks cleared between 1 March 1986 and 28 February 1987, the whole portion of excise duty which would have been payable but for a generally prevalent practice resulting in short-levy shall not be required to be paid in respect of such short-levied strips during that period.