(1) This chapter applies to costs payable or to be assessed under an Act , these rules or an order of the court.
(2) However—(a) part 2 applies to costs payable or to be assessed under the Legal Profession Act 2007 only if section 319 (1) (b) of that Act applies to the costs; and(b) part 3 does not apply to costs payable or to be assessed under the Legal Profession Act 2007 ; and(c) part 4 applies only to costs payable or to be assessed under the Legal Profession Act 2007 .Note—The Legal Profession Act 2007 , section 319 (1) (b) applies to costs that are recoverable under the applicable scale of costs, rather than under a costs agreement.