s 4 Common Services Tunnels Authority
4.—(1) The Minister may appoint a person to be a Common Services Tunnels Authority responsible for the administration of this Act. (2) For the purposes of subsection (1), the Minister may —(a) appoint different Common Services Tunnels Authorities to be responsible —(i) for the whole or any provision of this Act, or for different regulations made under this Act; and (ii) for different common services tunnel areas; and (b) specify the extent and manner in which the responsibility mentioned in paragraph (a) is to be exercised. (3) Where a public authority is appointed by the Minister under subsection (1) to be a CST Authority responsible for the operation of this Act, for any particular Part or provision of this Act or for any particular regulations made under this Act, whether in respect of all common services tunnel areas or any common services tunnel area —(a) it is the function and duty of the public authority to do so in accordance with that subsection, in addition to such functions and duties imposed on the public authority under any other written law; and (b) the public authority is deemed to be fulfilling the purposes of the Act constituting that public authority, and the provisions of that Act apply to the public authority in respect of that function and duty.