21.—(1) The carrying out or use of the authorised development and the doing of anything else authorised by this Order is authorised for the purpose specified in section 158(1) of the 2008 Act (nuisance: statutory authority), notwithstanding that it involves—
(a)an interference with an interest or right to which this article applies; or
(b)a breach of a restriction as to use of land arising by virtue of contract.
(2) The undertaker must pay compensation to any person whose land is injuriously affected by—
(a)an interference with an interest or right to which this article applies; or
(b)a breach of a restriction as to use of land arising by virtue of contract,
caused by the carrying out or use of the authorised development and the operation of section 158 of the 2008 Act.
(3) The interests and rights to which this article applies are any easement, liberty, privilege, right or advantage annexed to land and adversely affecting other land, including any natural right to support.
(4) Subsection (2) of section 10 of the 1965 Act applies to paragraph (2) by virtue of section 152(5) of the 2008 Act (compensation in case where no right to claim in nuisance).
(5) Any rule or principle applied to the construction of section 10 of the 1965 Act applies to the construction of paragraph (2) (with any necessary modifications).