27.—(1) Where a scheme member who has acquired rights under these regulations has ceased to perform pensionable service (whether before or after the coming into force of these regulations) before attaining the retiring age, then if the revaluation condition is satisfied—
(a)any pension or other retirement benefit payable under these regulations, or under rules made under section 3 of the Clergy Pensions (Amendment) Measure 1967, to that member, as calculated at the date on which the member ceased to perform pensionable service, and
(b)any pension or other benefit so payable to any other person in respect of that member, as so calculated,
shall be revalued in accordance with the provisions of paragraphs 2 and 6 of Schedule 1A to the Social Security Pensions Act 1975 or in accordance with such other method of revaluation, not being less favourable to the person to whom the benefit concerned is payable, as the Board may determine.
(2) In this regulation “the revaluation condition” has the same meaning as in Part I of Schedule 1A to that Act.