Where the costs claimed in a between the parties bill do not exceed the amount specified in the Part 47 Practice Direction (para 14.1), currently £75,000, the bill will be referred for provisional assessment (a hearing on paper only) by either a Costs Officer or a Costs Judge, unless the Court decides that it is unsuitable for provisional assessment. In a provisional assessment the Court will, in the first instance, assess the bill without an oral hearing. If any party wishes to challenge any of the decisions made on the provisional assessment that party must request an oral hearing within 21 days of receiving notice of the provisional assessment. If no request is made within that period the decisions made on the provisional assessment will, save in exceptional circumstances, be binding on the parties.