1(1)The following enactments (which control obstructions of the highway in connection with works relating to buildings) do not apply to anything erected, placed or retained in, upon or over a highway for the purposes of or in connection with the exercise of the powers conferred by this Act—U.K.
(a)section 15(1) of the Greater London Council (General Powers) Act 1970 (c. lxxvi), and
(b)section 169(1) of the Highways Act 1980.
(2)Section 141 of the Highways Act 1980 (restriction on planting trees or shrubs in or near carriageway) does not apply to any tree or shrub planted for the purposes of or in connection with the exercise of the powers conferred by this Act.
(3)Section 167 of the Highways Act 1980 (powers relating to retaining walls near streets) does not apply to any length of a retaining wall erected on land held by the Secretary of State or by the nominated undertaker and used, or intended for use, by the nominated undertaker for the purposes of its undertaking under this Act.
(4)Nothing in section 8(2) to (5) of the Greater London Council (General Powers) Act 1986 (c. iv) (power of borough councils in relation to retaining walls supporting the carriageway or footway of certain highways) applies with respect to any retaining wall erected in exercise of the powers conferred by this Act.
(5)The provisions of this paragraph apply in relation to a highway for which the Secretary of State or a strategic highways company is the highway authority only if the Secretary of State or the strategic highways company consents (and consent may be subject to conditions).