18.—(1) Nothing in this Order affects prejudicially any estate, right, power, privilege, authority or exemption of the Crown and, in particular, nothing in this Order authorises the Company to take, use, enter upon or in any manner interfere with any land, hereditaments or rights of whatsoever description (including any part of the shore or bed of the sea or any river, channel, creek, bay or estuary)—
(a)belonging to Her Majesty in right of Her Crown and under the management of the Crown Estate Commissioners, without the consent in writing of those Commissioners; or
(b)belonging to a Government Department, or held in trust for Her Majesty for the purposes of a Government Department, without the consent in writing of that Government Department.
(2) A consent under paragraph (1) may be given unconditionally or subject to such terms and conditions as may be considered necessary or appropriate.