Regulation 13 Costs warnings and deposits
If the President believes that a party has no reasonable prospect of success in his case, or on any issue—
he may warn him (a “costs warning”) that if he continues to take part in the proceedings, or, as the case may be, to continue to dispute that issue, a costs order may be made against him; and
he may, in addition, order him to pay a deposit of a sum not exceeding £150 as a condition of being permitted to continue to take part in the proceedings, or, as the case may be, to continue to dispute that issue.
The President may not order the applicant to pay a deposit unless he has considered whether he is able to comply with such an order, and has considered any relevant written information he has provided.
If he has given a costs warning, the President must not allow the case to continue or, as the case may be, the issue to continue to be disputed, unless the warned party—
has written to the Secretary saying that despite the warning, he wishes to continue with the case, or to dispute the issue, and
has paid any deposit which he has been ordered to pay.