103Application of Chapter I to pensions not attributable to pensionable service
Regulations may provide that the provisions of this Chapter shall apply in relation to any pension under a qualifying scheme as if so much of the annual rate of the pension as would not otherwise be attributable to pensionable service were attributable—
(a)to pensionable service before the appointed day;
(b)to pensionable service on or after that day; or
(c)partly to pensionable service before and partly to pensionable service on or after that day.