Regulation 5 Retrospective effect
Where—
(a)
if these Regulations had come into force on 17th May 1990, a man would have been entitled to make an election under regulation E2(6) or (7)(a) of the principal Regulations, and
(b)
he gives notice of such election within six months of the date when these Regulations come into force,
the election may be expressed to have effect as if these Regulations had come into force on 17th May 1990 and the notice had been given on the first day on which he would in that case have been entitled to give notice of the election.