Paragraph 4
In calculating the amount of any difference for the purposes of the definition of “K” in paragraph 2, it shall be assumed (so far as relevant for the purposes of section 13 of the 1988 Act or regulations under section 13A of that Act) that the circumstances of an individual and a state of affairs on 31st March 1993 had been his circumstances and the state of affairs on each day of the financial year ending on that day.