Regulation 5
Where a person has been promoted during the period in respect of which the emoluments relevant for the purpose of calculating a police pension were payable (hereinafter referred to as the relevant period), section 1 of the Pensions (Increase) Act 1974 shall have effect as if it authorised whichever is the more favourable of the following increases; namely—
(a)
the increase authorised by subsections (1) and (2) thereof in the pension actually payable, and
(b)
the increase which would have been authorised if the person had not been promoted and the rate of the pension had been that at which it would have been payable had he throughout the relevant period received the emoluments appropriate to the rank first held by him during that period.