For the purposes of this section and sections 187 to 191, the court may, of its own motion, and shall, if so requested by either of the qualified cohabitants or another concerned person, direct the trustees of the scheme to provide the qualified cohabitants or the other person and the court, within a specified period of time -

(a) with a calculation of the value and amount, determined in accordance with relevant guidelines, of the retirement benefit or contingent benefit that is payable or that would have been payable under the scheme and has accrued at the time of making the order, and

(b) with a calculation of the amount of the contingent benefit that is payable or that would have been payable, under the scheme.