5.—(1) The responsibility for enforcing any of the relevant statutory provisions in respect of any particular premises, part of premises, or any activity carried on there may be transferred from the Executive to the local authority or from the local authority to the Executive.
(2) A transfer may be made only by agreement between the enforcing authority which has the current responsibility and the authority to which it proposed to transfer it, or by the Commission.
(3) Where a transfer has been made, the authority to which responsibility has been transferred shall cause notice of the transfer to be given to persons affected by it, and where a transfer has been made by the Commission the Commission shall cause notice of it to be given to both enforcing authorities concerned.
(4) The preceding provisions of this regulation shall not apply to any part of premises occupied by the Crown or to any activity carried on there but responsibility for enforcing any of the relevant statutory provisions in respect of office activities and the premises used for them may be transferred by an agreement between the Executive, the local authority concerned and the Government Department or other public body concerned.