2. The annual amount of the higher tier ill-health pension of a whole-time firefighter must be calculated in accordance with the formula—
where—
A is the pensionable service accrued in the Scheme before the whole-time firefighter’s ill-health retirement,
B is—
(a)the pensionable service that the whole-time firefighter would have accrued from the date of the whole-time firefighter’s ill-health retirement until the whole-time firefighter’s normal retirement age had the whole-time firefighter continued to be a contributing member of the Scheme (the whole-time firefighter’s “prospective service”); or
(b)if the aggregate of the whole-time firefighter’s actual pensionable service and the whole-time firefighter’s prospective service is more than forty years, the difference between forty years and the whole-time firefighter’s actual pensionable service, and
C is the whole-time firefighter’s final pensionable pay.