4(1)Where, in relation to a disposal to which section 35(2) applies, section 42 has effect by reason of an earlier disposal made after 31st March 1982 and before 6th April 1988, the sums to be apportioned under section 42 shall for the purposes of the later disposal be ascertained on the assumption stated in section 35(2).
(2)In any case where—
(a)subsection (2) of section 35 applies in relation to the disposal of an asset,
(b)if that subsection did not apply, section 23(2), 122(4), 133(4) or 244 would operate to disallow expenditure as a deduction in computing a gain accruing on the disposal, and
(c)the disallowance would be attributable to the reduction of the amount of the consideration for a disposal made after 31st March 1982 but before 6th April 1988,
the amount allowable as a deduction on the disposal shall be reduced by the amount which would be disallowed if section 35(2) did not apply.