20.—(1) An employee is entitled to additional adoption leave in respect of a child if–
(a)the child was placed with him for adoption,
(b)he took ordinary adoption leave in respect of the child, and
(c)his ordinary adoption leave period did not end prematurely under regulation 22(2)(a) or 24.
(2) Subject to regulations 22 and 24, an employee’s additional adoption leave period is a period of 26 weeks beginning on the day after the last day of his ordinary adoption leave period.