42(1)Before beginning to construct any specified work, the nominated undertaker must submit to Canal & River Trust plans of the work and such further particulars available to it as Canal & River Trust may within 14 days of the submission of the plans reasonably require.
(2)Any specified work must not be constructed except in accordance with such plans as may be approved in writing by Canal & River Trust or determined under paragraph 50.
(3)Any approval of Canal & River Trust required under this paragraph must not be unreasonably withheld and—
(a)is to be deemed to have been given if it is neither given nor refused (with an indication of the grounds for refusal) within 28 days of the submission of the plans for approval or where further particulars are submitted under paragraph 42(1), within 28 days of the submission of those particulars; and
(b)may be given subject to such reasonable requirements as Canal & River Trust may make for the purpose of ensuring the safety or stability of the canal, including requirements as to the construction of protective works.