"My lords, in view of the cumulative effect of these indications of parliament's intention to promote greater finality in arbitral awards than was being achieved under the previous procedure as it was applied in practice, it would, in my view, defeat the main purpose of the ... Act if judges when determining whether a case was one in which the new discretion to grant leave to appeal should be exercised in favour of an applicant ... did not apply much stricter criteria than those ... which used to be applied in exercising the former discretion to require an arbitrator to state a special case for the opinion of the court. Where, as in the instant case, a question of law involved is the construction of a 'one-off' clause the application of which to the particular facts of the case is an issue in the arbitration, leave should not normally be given unless it is apparent to the judge upon a mere perusal of the reasoned award itself without the benefit of adversarial argument that the meaning ascribed to the clause by the arbitrator is obviously wrong ... For reasons already sufficiently discussed, rather less strict criteria are in my view appropriate where questions of construction of contracts in standard terms are concerned. That there should be as high a degree of legal certainty as it is practicable to obtain as to how such terms apply upon the occurrence of events of a kind that it is not unlikely may reproduce themselves in similar transactions between other parties engaged in the same trade, is a public interest that is recognised by the Act ... So, if the decision of the question of construction in the circumstances of the particular case would add significantly to the clarity and certainty of ... commercial law it would be proper to give leave in a case sufficiently substantial to escape the ban imposed by the first part of s.[38(5)] bearing in mind always that a super abundance of citable judicial decisions arising out of slightly different facts is calculated to hinder rather than to promote clarity in settled principles of commercial law. But leave should not be given even in such a case, unless the judge considered that a strong prima facie case had been made out that the arbitrator had been wrong in his construction; and when the events to which the standard clause fell to be applied in the particular arbitration were themselves 'one-off' events, stricter criteria should be applied on the same lines as those that I have suggested as appropriate to 'one-off' clauses."