# Arbitration (International Investment Disputes) Act 1966, Article 56


(1) After a Commission or a Tribunal has been constituted and proceedings have begun, its composition shall remain unchanged; provided, however, that if a conciliator or an arbitrator should die, become incapacitated, or resign, the resulting vacancy shall be filled in accordance with the provisions of Section 2 of Chapter III or Section 2 of Chapter IV.
(2) A member of the Commission or Tribunal shall continue to serve in that capacity notwithstanding that he shall have ceased to be a member of the Panel.
(3) If a conciliator or arbitrator appointed by a party shall have resigned without the consent of the Commission or Tribunal of which he was a member, the Chairman shall appoint a person from the appropriate Panel to fill the resulting vacancy.

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Source: https://www.legislation.gov.uk/ukpga/1966/41/schedule/part/6/crossheading/article-56 (the official version)
Page: https://openlegislation.uk/arbitration-international-investment-disputes-act-1966/schedule/part-6/crossheading-article-56
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.