Subject to the provisions of this section and to sections 61 to 63, the costs of a solicitor in any case where a contentious business agreement has been made shall not be subject to taxation or F1(except in the case of an agreement which provides for the solicitor to be remunerated by reference to an hourly rate)to the provisions of section 69.

Subject to subsection (3), a contentious business agreement shall not affect the amount of, or any rights or remedies for the recovery of, any costs payable by the client to, or to the client by, any person other than the solicitor, and that person may, unless he has otherwise agreed, require any such costs to be taxed according to the rules for their taxation for the time being in force.

A client shall not be entitled to recover from any other person under an order for the payment of any costs to which a contentious business agreement relates more than the amount payable by him to his solicitor in respect of those costs under the agreement.

A provision in a contentious business agreement that the solicitor shall not be liable for negligence, or that he shall be relieved from any responsibility to which he would otherwise be subject as a solicitor, shall be void.