in subsection (1), after the definition of “prescribed” there shall be inserted the following definition—

““prescribed testing authority” means such person authorised by the Secretary of State under section 8 of the Transport Act 1982 to carry on a vehicle testing business within the meaning of Part II of that Act as may be prescribed” and

the following subsection shall be inserted after subsection (1)—

“(1A)

References in any provision of this Act to an authorised inspector are references to an authorised inspector under section 8 of the Transport Act 1982 and, where the function to which that provision relates is one of those specified in section 9 of that Act (testing and surveillance functions), are limited to an authorised inspector authorised under section 8 to exercise that function.”.