(1) Without prejudice to subsection (2), reductions of public service pensions under section 2 shall be paid or disposed of as the Minister may direct and, in particular, the Minister may, for the purposes of the aggregation of public service pensions, direct a paying authority -

(a) to reduce the annualised amount of a public service pension payable by the paying authority to a pensioner by the total amount of the reduction that applies in relation to the pensioner under section 2 in respect of all public service pensions payable to him or her, or

(b) not to reduce the annualised amount of a public service pension payable by the paying authority to a pensioner in accordance with section 2.

(2) Where the amount of any reduction in a public service pension under section 2 or 2A has not been duly paid or disposed of in accordance with a direction of the Minister under subsection (1), the Minister may recover the amount from the paying authority concerned as a simple contract debt in any court of competent jurisdiction.