the parties to an arbitration (the claimant(s) and respondent(s)) are typically able to influence the arbitrator(s) nominated/appointed to determine their dispute. This is considered a major advantage of arbitration as it provides parties with an opportunity to select decision-makers with the right qualifications and expertise, whether legal and/or industry-focused. In ad hoc arbitration, the parties typically appoint their arbitrator(s) directly, or utilise the services of an appointing authority. In institutional arbitration, the arbitral institution typically appoints the arbitrator(s) on behalf of the parties, although they will usually take into account any party nominations, subject to some exceptions. By way of contrast, in litigation, the parties do not select their judge. Most arbitral tribunals comprise a single arbitrator, called a sole arbitrator, chosen by agreement between the parties or by the appointing authority or institution. In larger cases, and sometimes because the arbitration agreement requires it, the tribunal will comprise two arbitrators, one chosen by each side, or three arbitrators, the third or presiding arbitrator being typically chosen by the two party-appointed arbitrators. Beyond the mechanics of appointing arbitrators, diversifying the pool of arbitrators (in terms of gender, nationality, race, ethnicity, nationality, profession, trade background, etc) has become an area of significant focus too. AA 1996—the tribunal—arbitration—England and Wales—overview contains links to practical guidance on subjects related to arbitrators, including their appointment, their duties and powers, and how they may be replaced/removed