5.— (1) The seal of the Council shall be authenticated by—

(a) the signature of the President of the Council or another member of the Council authorised by the Council to act in that behalf, and

(b) the signature of a member of the staff of the Council authorised by the Council to act in that behalf.

(2) Judicial notice shall be taken of the seal of the Council and, accordingly, every document—

(a) purporting to be an instrument made by the Council, and

(b) purporting to be sealed with the seal of the Council authenticated in accordance with subsection (1),

shall be received in evidence and be deemed to be such instrument without further proof unless the contrary is proved.