15. Where–
(a)a deduction has fallen to be made under paragraph 14(2) or (3) or an election has been made under paragraph 14(4); and
(b)there is then a retrospective increase in the teacher’s salary; and
(c)the consequent recalculation of the amount of the deduction or lump sum and of the appropriate terminal sum results in a greater increase in the amount of the deduction or lump sum than in the terminal sum,
the teacher, or as the case may be his or her widow or widower or a beneficiary nominated under regulation E27, may notify the Scottish Ministers in writing that the amount of the deduction made is not to be increased.