(1)The aggregate amount of loans and of grants together made under the two last foregoing sections by the Minister shall not exceed £50,000,000 or, if so provided by a resolution of the Commons House of Parliament, £100,000,000.
(2)No advance shall be made after the passing of this Act under section 17(1) of the Ministry of Transport Act 1919 by the Minister for the construction, improvement or maintenance of a harbour, dock or pier, and no advance or loan shall be made—
(a)under section 3 of the Harbours and Passing Tolls, &c. Act 1861 or section 9 of the Public Works Loans Act 1875 by the Public Works Loan Commissioners for carrying any shipping purpose into effect at a harbour which is not for the time being a fishery harbour or marine work;
(b)under the said section 9 by those Commissioners for the purposes of a dock or pier elsewhere than at a harbour which is for the time being a fishery harbour or marine work or for the purposes of a harbour which is not for the time being a fishery harbour or marine work;
unless those Commissioners have agreed before the passing of this Act to make it.