40The Post Office as banker
So far as regards the provision by it, in exercise of the power conferred on it by virtue of section 7(1)(b) of this Act, of a banking service, the Post Office shall be deemed for all purposes to be a bank and a banker and to be carrying on the business of banking and a banking undertaking, but shall not be required to furnish to the Commissioners of Inland Revenue any returns under the provisions of section 21 of the [1844 c. 32.] Bank Charter Act 1844 or section 13 of the [1845 c. 38.] Bank Notes (Scotland) Act 1845.