There may be included in a compulsory purchase order made by a highway authority in the exercise of highway land acquisition powers land in which the authority have already acquired interests by agreement in the exercise of such powers.
Where land is included in a compulsory purchase order as mentioned above, it is to be treated as subject to compulsory purchase for the purposes of the Act of 1965, and that Act shall apply accordingly, except as respects—
Where—
subsection (4) below has effect with respect to any activities carried on on the land in the course of its use for the purposes of a service area, trunk road picnic area or lorry area, as the case may be.
Any such activities are, as against a person who apart from the acquisition would have had a right to restrain such activities, or a right the exercise of which would be calculated to interfere with them, to be treated as activities of the authority in question (that is to say, the special road authority, the Minister, strategic highways company or the highway authority, as the case may be) carried on under statutory powers, notwithstanding that they are carried on by other persons under contract to the authority or otherwise.