4(1)Nothing in this Order shall affect prejudicially any estate, right, power, privilege, authority or exemption of the Crown and in particular and without prejudice to the generality of the foregoing nothing herein contained shall authorise the Trustees or any licensee of the Trustees to take, use, enter upon or in any manner interfere with any land or interest in land, or any rights of whatsoever description (including any portion of the shore or bed of the sea or of 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 subsection (1) above may be given unconditionally or subject to terms and conditions.