The Board may order the bill of costs claimed by a solicitor on account of business conducted or transacted by him on behalf of a charity, or the trustees thereof, to be taxed and ascertained by a Taxing Master, and where costs which are the subject of an order under this section will fall to be paid out of a fund, the Taxing Master shall have regard to that fact in taxing and ascertaining them.

Where the Board orders a bill of costs to be taxed and ascertained under this section, the solicitor concerned shall not be entitled to any costs on account of the business to which the bill of costs relates other than the costs as so taxed and ascertained.