4.B.2—(1) Where a member has not more than 10 years of pensionable service before first becoming a principal practitioner, the reference amount is the best of–
(a)the amount determined by calculation method A;
(b)the amount determined by calculation method B; and
(c)where–
(i)the benefit is payable on retirement or death of the member; and
(ii)the condition is met,
the base amount.
(2) The condition mentioned in paragraph (1)(c)(ii) is that–
(a)the amount of pension payable under Part 2 would be greater than the amount of pension payable under Part 3, where–
(i)any enhancement for the purposes of regulation 2.D.8 (early retirement on ill health (active members)) or 3.D.7 (early retirement on ill health (active members)); as appropriate, are ignored;
(ii)any additional pension is disregarded; and
(iii)any increase under the Pensions (Increase) Act 1971 is applied; and
(b)the amount determined by calculation method B is less than the base amount.
4.B.3 Where a member has more than 10 years of pensionable service before first becoming a principal practitioner, the reference amount is the better of–
(a)the amount determined by calculation method A; and
(b)the base amount.