“36. The Belize case constitutes an important and recent development in the principles of interpretation, which the courts are probably still absorbing and ingesting. It is appropriate to take the statement of principles in it in more detail since it is directly relevant to the issue that I am considering in this case. In Belize, the Privy Council analysed the case law on the implication of terms and decided that the implication of terms is, in essence, an exercise in interpretation. This development promotes the internal coherence of the law by emphasising the role played by the principles of interpretation not only in the context of the interpretation of documents simpliciter but also in the field of the implication of terms. Those principles are the unifying factor. The internal coherence of the law is important because it enables the courts to identify the aims and values that underpin the law and to pursue those values and aims so as to achieve consistency in the structure of the law.”
“17….[t]he most usual inference in such a case is that nothing is to happen. If the parties had intended something to happen, the instrument would have said so.”
“An unexpressed term can be implied if and only if the court finds that the parties must have intended that term to form part of their contract: it is not enough for the court to find that such a term would have been adopted by the parties as reasonable men if it had been suggested to them: it must have been a term that went without saying, a term necessary to give business efficacy to the contract, a term which, though tacit, formed part of the contract which the parties made for themselves.”