Regulation 5
Any increase of pension payable by virtue of these Regulations shall take effect from 1st April 1974, except—
(a)
where the pension is a pension specified in paragraph 2 of the Schedule to these Regulations, in which case any such increase shall take effect from 16th May 1975;
(b)
where the pension is a pension specified in paragraph 3 of that Schedule, in which case any such increase shall take effect from 1st June 1973.