No action shall be brought on any contentious business agreement, but on the application of any person who—
the court may enforce or set aside the agreement and determine every question as to its validity or effect.
On any application under subsection (1), the court—
If the business covered by a contentious business agreement (not being an agreement to which section 62 applies) is business done, or to be done, in any action, a client who is a party to the agreement may make application to a costs officer of the court for the agreement to be examined.
A costs officer before whom an agreement is laid under subsection (3) shall examine it and may either allow it, or, if he is of the opinion that the agreement is unfair or unreasonable, require the opinion of the court to be taken on it, and the court may allow the agreement or reduce the amount payable under it, or set it aside and order the costs covered by it to be assessed as if it had never been made.
Subsection (4B) applies where a contentious business agreement provides for the remuneration of the solicitor to be by reference to an hourly rate.
If on the assessment of any costs the agreement is relied on by the solicitor and the client objects to the amount of the costs (but is not alleging that the agreement is unfair or unreasonable), the costs officer may enquire into—
Where the amount agreed under any contentious business agreement is paid by or on behalf of the client or by any person entitled to do so, the person making the payment may at any time within twelve months from the date of payment, or within such further time as appears to the court to be reasonable, apply to the court, and, if it appears to the court that the special circumstances of the case require it to be re–opened, the court may, on such terms as may be just, re–open it and order the costs covered by the agreement to be assessed and the whole or any part of the amount received by the solicitor to be repaid by him.
In this section and in sections 62 and 63 "the court" means—
and for the avoidance of doubt it is hereby declared that in paragraph (a) "court having jurisdiction to enforce and set aside agreements" includes the county court.