in subsection (1B) (which relates to the Secretary of State's withdrawal of consent to a local authority incurring liability to meet capital expenses and to the variation by him of the terms of such consent), for the words from " where " to the end there shall be substituted the following proviso—

“: Provided that, where the local authority have, by binding contract, incurred any liability to which the consent relates, a withdrawal or variation which would, but for this proviso, have the effect of rendering performance of an obligation under such contract impossible shall apply only to the extent (if any) that it does not have that effect.”; and

for paragraph (b) of subsection (3) (which among other things provides for the Secretary of State's consent being made necessary as regards a local authority incurring liability to meet certain expenses other than capital expenses) there shall be substituted the following paragraphs—

“(b)

provide that subsection (1) above shall, in the same manner as it applies to liabilities incurred in relation to capital expenses, apply to such other liabilities incurred in relation to a lease (or other contract, or arrangement, of a like nature) as may be specified in the order and, for the purposes of such application, prescribe a method for assigning a capital value to those other liabilities and prescribe circumstances in which such other liabilities shall be taken to arise.”.