Normally a request, an application or an appeal will not be accepted by the court office unless the appropriate fee is first paid. This should be in the form of a cheque payable to HM Courts and Tribunals Service. Solicitors may pay by a PBA account if they have set one up. In exceptional circumstances a costs officer may allow an application to be issued on an undertaking by the applicant or his solicitors that the appropriate fee will be paid within a limited period thereafter.