“…ould have intended: see Lord Neuberger’s sixth principle in Arnold v Britton [2015] UKSC 36; [2015] AC 1619, para 22; and Astor Management v Atalaya Mining Plc [2018] EWCA Civ 2407, para 40. The underlying policy is that the role of the court is limited to identifying and interpreting what the parties have expressly or impliedly agreed an…”