“with whom did UK have an implied contract to pay Services for the expenses of the seconded staff?”
“is it appropriate in all the circumstances to imply a contract between UK and Services, pursuant to which Services paid the expenses of the seconded staff?”
“But where we can be confident, first, that the other party has had opportunity enough to meet it, secondly, that he has not acted to his detriment on the faith of the earlier omission to raise it and, thirdly, that he can be adequately protected in costs, our usual practice is to allow a pure point of law not raised below to be taken in this court”
“[f]or there to be a contract, there must be (a) agreement on essentials of sufficient certainty to be enforceable, (b) an intention to create legal relations and (c) consideration”
“[w]here there is an express agreement on essentials of sufficient certainty to be enforceable, an intention to create legal relations may commonly be assumed … It is otherwise when the case is that a contract should be implied from the parties’ conduct … It is then for the party asserting a contract to show the necessity for implying it”