33.—(1) The first increase required by regulation 32 in the rate of a relevant pension must take effect not later than the first anniversary of the date on which the pension is first paid; and subsequent increases must take effect at intervals of not more than 12 months.
(2) Where the first such increase takes effect on a date when the pension has been in payment for a period of less than 12 months, the increase must be of an amount at least equal to one twelfth of the amount of the increase so required (apart from this paragraph) for each complete month in that period.