6.—(1) This paragraph applies in relation to an award of universal credit where the calculation of the amount of the award includes, by virtue of any provision of this Part, an amount in respect of particular costs which a claimant may incur.
(2) Regulations may provide for liability to pay all or part of the award to be discharged by means of provision of a voucher.
(3) But the amount paid by means of a voucher may not in any case exceed the total of the amounts referred to in sub-paragraph (1) which are included in the calculation of the amount of the award.
(4) For these purposes a voucher is a means other than cash by which a claimant may to any extent meet costs referred to in sub-paragraph (1) of a particular description.
(5) A voucher may for these purposes—
(a)be limited as regards the person or persons who will accept it;
(b)be valid only for a limited time.