Jurisdiction(s):
United Kingdom

Related legal acts

Key definition

Arbitrator definition

What does Arbitrator mean? The neutral decision-maker chosen by the parties to an arbitration to determine their dispute and issue a binding award. An arbitrator may act as a sole arbitrator or as one of a three-member arbitral tribunal (panel). Appointment is usually by the parties under the arbitration agreement or applicable institutional rules; failing agreement, a court or appointing authority may make the appointment. Key features include independence and impartiality, a continuing duty to disclose potential conflicts, and powers to set procedure, manage timetables, decide jurisdiction, take evidence and make procedural orders, subject to the arbitration agreement, the seat and any...

Appointing a Replacement Arbitrator under the Arbitration Act 1996: Procedures, Timing, Truncated Tribunals, and ICC, LCIA and UNCITRAL Rules

Published by a LexisNexis Arbitration expert

Practice notes

Appointment of replacement Arbitrators

This Practice Note addresses the appointment of substitute arbitrators under the Arbitration Act 1996 (AA 1996) and under particular Arbitration rules. Where an arbitrator ceases to hold office—creating what is commonly termed a 'casual vacancy'—a replacement arbitrator may, or will, need to be appointed. The method of appointment depends on the applicable procedural framework involved.

For guidance on when an arbitrator may cease to hold office, see Practice Note: Tribunal—resignation, revocation or death of an arbitrator.
For guidance on removing an arbitrator under AA 1996, s 24, see Practice Note: AA 1996—applying to remove an arbitrator (s 24)...

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Web page updated on 21/05/2026

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