18 Proof of certain facts by certificate of Secretary of State.E+W+S+N.I.
(1)A certificate by the Secretary of State stating the date on which the tunnel works were begun and either—
(a)the date on which the tunnel was first open to public traffic; or
(b)that the tunnel had not been open to public traffic on any occasion before a date specified in the certificate;
shall be conclusive evidence of the facts stated.
(2)A certificate by the Secretary of State stating the date of completion of any action taken or financed by the Secretary of State under section 10 of this Act for the purpose of restoring, replenishing or renewing the mussel beds within the Conwy Mussel Fishery shall be conclusive evidence that that action was completed on the date stated.