Apparent bias. The arbitrator’s duty of disclosure when accepting multiple appointments in related arbitrations with only one common party. Duty of disclosure and confidentiality: The United Kingdom Supreme Court. Halliburton Company v. Chubb Bermuda Insurance Ltd (Formerly Known as Ace Bermuda Insurance Ltd) [2020] UKSC 48, J. 27.11.2020. Lord Reed, Lord Hodge, Lady Black, Lord Lloyd-Jones and Lady Arden