3.—(1) Licences, notices and declarations under these Regulations must be in writing, may be subject to conditions and may be amended, suspended or revoked in writing at any time.
(2) The Assembly Secretary must take such steps as he or she considers necessary to ensure that licences, notices and declarations are brought to the attention of those who may be affected by them and, in particular, must ensure that the extent of any zone declared under these Regulations, the nature of the restrictions and requirements applicable within it and the dates of its declaration and withdrawal (and any suspension of it) are publicised.