A party may apply for a wasted costs order by filing an application notice in accordance with Part 23 (see Section 20) or by making an application orally in the course of any hearing (the Part 46 Practice Direction (para 5.4)).
A Part 23 application must be supported by evidence which:
(i) sets out what the legal representative has done or failed to do; and,
(ii) identifies the costs that it may be ordered to pay or which are sought against the legal representative.
The court will then give directions about the procedure to be followed in order to ensure that the issues are dealt with in a way which is as fair, simple and summary as the circumstances permit.