4.—(1) TfL may construct and maintain the scheduled works.
(2) Subject to article 5 (power to deviate), the scheduled works may only be constructed in the lines or situations shown on the deposited plans and in accordance with the levels shown on the deposited sections.
(3) Subject to paragraph (6), TfL may carry out and maintain such of the following works as may be necessary or expedient for the purposes of, or for purposes ancillary to, the construction of the scheduled works, namely—
(a)works required for the strengthening, improvement, repair or reconstruction of any street;
(b)works for the strengthening, alteration or demolition of any building;
(c)works to erect and construct offices, head houses and other buildings, machinery, apparatus, works and conveniences;
(d)railway electrification and signalling works;
(e)station services and finishes;
(f)means of access, including footpaths;
(g)retaining walls, fencing, barriers, wing walls, shafts, drainage works and culverts;
(h)works to remove or alter the position of any street furniture or apparatus, including mains, sewers, drains, pipes, cables and lights;
(i)works to alter the course of, or otherwise interfere with, watercourses;
(j)landscaping and other works to mitigate any adverse effects of the construction, maintenance or operation of the authorised works;
(k)facilities and works for the benefit or protection of land or premises affected by the authorised works;
(l)the felling of trees; and
(m)earthworks required for the carrying out of the authorised works.
(4) Subject to paragraph (6), TfL may carry out and maintain such other works (of whatever nature) as may be necessary or expedient for the purposes of, or for purposes ancillary to, the construction of the authorised works.
(5) TfL may remove any works constructed by it under this Order which have been constructed as temporary works or which it no longer requires.
(6) Paragraphs (3) and (4) only authorise the carrying out or maintenance of works—
(a)within the Order limits; or
(b)within the boundaries of any street abutting the Order limits or which has a junction with such a street.
(7) The powers conferred by this article may not be exercised within the boundaries of a street outside of the Order limits without the consent of the street authority but that consent must not be unreasonably withheld.
(8) In constructing and maintaining the scheduled works TfL may lay and install such number of railway lines, switches and crossings as may be necessary or expedient.
(9) Section 23 (prohibition on obstructions etc. in watercourses) of the Land Drainage Act 1991(1) and any byelaws made under that Act or the Water Resources Act 1991(2) do not apply to anything done under or in pursuance of this Order.
(10) The authorised works may be constructed and maintained under the powers conferred by this article regardless of anything contained in, or done under, Part 1 (registration) of, or Schedule 2 (non-registration or mistaken registration under the 1965 Act) to, the Commons Act 2006(3).
(11) Where any maintenance of works is carried out under this article, such works may only be undertaken provided they have no greater effect than as described in the environmental statement.