a. There was no evidence to demonstrate a concluded agreement to supply
12 The defendant contends that there was no concluded agreement for future supply and that in these circumstances there was no liability for breach of such an agreement that would be for the losses which had been calculated as I have set out above.
13 In Masters v Cameron (1954) 91 CLR 353 a document in relation to the sale of land drawn up by the parties provided that it was subject to the preparation of a formal contract of sale acceptable to the respondents' solicitors. The High Court (Dixon CJ, McTiernan and Kitto JJ) held:
"Where parties who have been in negotiation reach agreement upon terms of a contractual nature and also agree that the matter of their negotiation shall be dealt with by a formal contract, the case may belong to any of three classes. It may be one in which the parties have reached finality in arranging all the terms of their bargain and intend to be immediately bound to the performance of those terms, but at the same time propose to have the terms restated in a form which will be fuller or more precise but not different in effect. Or, secondly, it may be a case in which the parties have completely agreed upon all the terms of their bargain and intend no departure from or addition to that which their agreed terms express or imply, but nevertheless have made performance of one or more of the terms conditional upon the execution of a formal document. Or, thirdly, the case be one in which the intention of the parties is not to make a concluded bargain at all, unless and until they execute a formal contract.
In each of the first two cases there is a binding contract: in the first case a contract binding the parties at once to perform the agreed terms whether the contemplated formal document comes into existence or not, and to join (if they have so agreed) in settling and executing the formal document; and in the second case a contract binding the parties to join in bringing the formal contract into existence and then to carry it into execution …
Cases of the third class are fundamentally different. They are cases in which the terms of agreement are not intended to have, and therefore to do not have, any binding effect of their own … The parties may have so provided either because they have dealt only with major matters and contemplate that others will or may be regulated by provisions to be introduced into the formal document as in Summergreene v Parker (1950) 80 CLR 304 or simply because they wish to reserve to themselves a right to withdraw at any time until the formal document is signed. … in such a case there is no enforceable contract, either because the condition is unfulfilled or because the law does not recognise a contract to enter into a contract.
The question depends upon the intention disclosed by the language the parties have employed, and no special form of words is essential to be used in order that there shall be no contract binding upon the parties before the execution of their agreement in its ultimate shape …
When it is not expressly stated to be subject to a formal contract it becomes a question of construction, whether the parties intended that the terms agreed on should merely be put into form, or whether they should be subject to a new agreement the terms of which are not expressed in detail."
14 There is a suggestion in the authorities that a fourth class of cases exists, namely, one in which the parties were content to be bound immediately and exclusively by the terms which they had agreed upon, while expecting to make a further contract in substitution for the first contract containing, by consent, additional terms. However that is not relevant to the present case.