Every local health authority empowered to provide chiropody services under section 12 of the [1968 c. 46.] Health Services and Public Health Act 1968, or under section 27 of the [1947 c. 27.] National Health Service (Scotland) Act 1947, shall provide the Secretary of State in such form and at such times as he may direct with information as to the extent to which those services are available and used for the benefit of disabled persons under the age of sixty-five.