The London County Council may, if they think fit as respects any period, pay to a metropolitan borough council a sum equal to one-half of the expenses incurred by the last-mentioned council in the remuneration of any person specifically employed by that council for the purpose of rendering clerical or other assistance to a public health inspector in connection with—
(a)any inspection of the borough made by the metropolitan borough council with a view to ascertaining what dwelling-houses therein are overcrowded, and the preparation of the report thereon; and
(b)the enforcement of the foregoing provisions of this Part of this Act:
Provided that the London County Council shall not be required to pay any sum to a metropolitan borough council under this subsection unless the following conditions are satisfied in relation to that council, that is to say—
(i)the metropolitan borough council must obtain the prior approval of the London County Council to the number of persons to be so employed and their rate of remuneration;
(ii)the metropolitan borough council must comply with such reasonable conditions as the London County Council may think fit to impose as to the rate of progress to be made with respect to the inspection of the borough, and as to the arrangements to be made for the carrying out by the metropolitan borough council of their duties in relation to overcrowding; and
(iii)the metropolitan borough council must submit to the London County Council at the end of each year information as to the steps taken in connection with, and as to the result of, the enforcement of the provisions relating to overcrowding in the borough, together with a copy of any particulars furnished to the Minister in pursuance of section eighty-six of this Act.