To what extent is the claimant's 'performance interest' protected by the remedies available in English law for breach of contract?

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Contract Law: Supervision 9 Essay

Tricia Rooney

Q.10 To what extent is the claimant's 'performance interest' protected by the remedies available in English law for breach of contract?

In answering this question, the notion of 'performance interest' plays a central role. Understanding this to convey 'the claimant's interest in the performance of the contract by the other party' I can see three principal methods by which this is protected by the remedies available in English law for breach of contract - namely damages (and the different measures available) and/or an order for specific injunction (actually compelling the performance of the contract) or an injunction (where the Court restrain the breach of a negative stipulation - effectively enforcing performance of the contract) . Thus, I will go on in analysing these remedies and the extent of protection they essentially provide.

When awarding damages the basis of assessment is normally the expectation/performance measure:

"The rule of the common law is, that where a party sustains a loss by reason of a breach of contract, he is, so far as money can do it, to be placed in the same situation with respect to damages, as if the contract had been performed."

- Robinson v. Harman

Thus the essential question here is how do the Courts adequately convert the loss into money to put the claimant in the position he would have been in had the contract been performed? In response to this, there are a number of different ways of measuring the loss which have been adopted by the Courts. Firstly, the 'difference in value' approach proves satisfactory in a number of situations. This awards the claimant the difference between (i) the value of what was actually provided/performed and (ii) the value of what should have been provided/performed if the contract had been properly performed. This measure is perfectly satisfactory where either substitute performance can be readily obtained in the market or where the claimant is contracting solely to make a profit. Thus this measure is the prima facie measure used in the Sale of Goods Act. Under s.53 (3) the measure of damages is:

"...prima facie the difference between the value of the goods at the time of delivery to the buyer and the value they would have had if they had fulfilled the warranty."

This has been applied in a number of cases, however some show that it is not an adequate way of representing the claimant's true loss in some circumstances and so the prima facie rule has to be displaced - Bence Graphics v. Fasson UK. Also, where the claimant sells on goods that were not of a certain quality, the courts have held that the claimant can recover the difference in value measure despite recovering money from a subsale - Slater v. Hoyle. What the Courts often have a problem with in relation to this measure is calculating the current value and market value of the goods in question - for example in Bence Graphics the Court found that the goods actually delivered were worth 0 - how could this be if some of the goods were actually used by the claimant? Thus, the court often have problems with reconciling this measure with the requirement to mitigate loss - for example, should a subsale be regarded as mitigating your loss or is it a collateral advantage? - As can be seen in the cases mentioned above, the Courts are struggling with this issue.
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Another problem with this measure is finding the 'current market value' of the subject matter of the contract. Under s.50 (3) of the SGA:

"Where there is an available market for the goods in question the measure of damages is prima facie to be assessed by the difference between the contract price and the market or current price at the time or times when the goods ought to have been accepted or (if no time was fixed for acceptance) at the time of the refusal to accept."

For example in Thompson v. Robinson - the ...

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