Subject to the following provisions of this section, in these provisions " the appropriate authority ", in relation to any land, means the government department, local authority or other body by whom, in accordance with the circumstances by virtue of which the land falls within any of the specified descriptions, the land is liable to be acquired or is indicated as being proposed to be acquired or, as the case may be, any right over the land is proposed to be acquired.
If any question arises—
(a) whether the appropriate authority in relation to any land for the purpose of these provisions is the Secretary of State or a local highway authority; or
(b) which of two or more local highway authorities is the appropriate authority in relation to any land for those purposes; or
(c) which of two or more local authorities is the appropriate authority in relation to any land for those purposes,
that question shall be referred to the Secretary of State, whose decision shall be final.
If any question arises which authority is the appropriate authority for the purposes of these provisions—
(a) section 194(1) of this Act shall have effect as if the reference to the date of service of the blight notice were a reference to that date or the date on which that question is determined, whichever is the later;
(b) section 201(3)(b) of this Act shall apply with the substitution for the period of six months of a reference to that period extended by so long as it takes to obtain a determination of the question ; and
(c) section 203(1)(b), (2)(b) and (3)(b) of this Act shall apply with the substitution for the reference to twelve months before the date of service of a reference to that period extended by so long as it takes to obtain a determination of the question.