61Designation of conservation areas
(1)Every planning authority shall—
(a)from time to time determine which parts of their district are areas of special architectural or historic interest the character or appearance of which it is desirable to preserve or enhance, and
(b)designate such areas as conservation areas.
(2)The Secretary of State may from time to time, after consultation with a planning authority, determine that any part of the authority’s district which is not for the time being designated as a conservation area is an area of special architectural or historic interest the character or appearance of which it is desirable to preserve or enhance; and, if he so determines, he may designate that part as a conservation area.