Where in the tax year 1989-90 the trustees or managers of an occupational pension scheme made an increase in the rate of pensions currently payable to the members of the scheme who had attained pensionable age or to the widows or widowers of members, they may deduct the amount of the increase from any increase which, but for this sub-paragraph, they would be required to make under section 109 in the tax year 1990-91.

Subsections (1) and (4) of section 110 shall apply to sub-paragraph (1) as they apply to subsections (2) and (3) of that section.