“Only a bull's-eye counts” (per Lord Steyn in Effort Shipping v Linden Management[1988] AC 605 at 625), and to Higgs v. R[2008] EWCA Crim 1324 , [34], again per Jacob LJ, quoting more fully from Lord Steyn: “I would be quite prepared, in an appropriate case involving truly feasible alternative interpretations of a convention, to allow the evidence contained in the travaux préparatoires to be determinative of the question of construction. But that is only possible where the court is satisfied that the travaux préparatoires clearly and indisputably point to a definite legal intention: see Fothergill v Monarch Airlines Ltd., per Lord Wilberforce, at p.278c. Only a bull’s-eye counts. Nothing less will do.”