The council of every county borough shall keep separate accounts of the sums received and expended by them in the exercise of any functions of the council under this Act, and those accounts shall be made up and audited in like manner as the accounts of a county council, and the enactments relating to the audit of accounts by a district auditor, and to the matters incidental to such audit and consequential thereon, shall have effect in relation to the accounts which the council of a county borough are required to keep under this section as they have effect in relation to the accounts of a county council.