For article 2(2) of the principal Order there shall be substituted the following paragraph:

“(2)

Part A

Column 1	Column 2
The period of 12 months commencing on 1st October in any year.	the accounting year ending in the calendar year preceding the end of the levy period.

Part B

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(a) the period starting on the commencement day of this Order and ending on 30th September 1990.	(a) the period of 6 months ending on 30th September 1989.

Column 1	Column 2
(b) any subsequent period of 12 months commencing on 1st October in any year.	(b) the period of 12 months ending on 30th September preceding the commencement of the levy period.”