10Subject to paragraph 11 below, paragraph 4 above does not apply to the dismissal of an employee from any employment if the employee—
(a)was not continuously employed for a period of not less than 26 weeks ending with the effective date of termination, or
(b)on or before the effective date of termination attained the age which, in the undertaking in which he was employed, was the normal retiring age for an employee holding the position which he held, or, if a man, attained the age of sixty-five, or, if a woman, attained the age of sixty;
but this paragraph shall have effect in a case where the effective date of termination falls within the period of six months beginning with the commencement of this Schedule as if the reference in sub-paragraph (a) to 26 weeks were a reference to 52 weeks.