11.—(1) Subject to paragraphs 12 and 13, and to paragraph 15(3) of Schedule 9, this paragraph applies where the teacher’s contributable salary was reduced (whether in consequence of a change of post or otherwise) within–
(a)the year; or
(b)if when notice of the election was given he or she had attained the age of 57, the period of 3 years,
ending immediately before the date on which notice of the election was given.
(2) Where this paragraph applies, paragraph 10 has effect with the substitution as “B” of the annual rate of the contributable salary that would have been payable at that date if he or she had continued to be employed in the same post and on the same terms.