The idea of an award of damages is to provide compensation so far as money can do it for loss the claimant suffers as a result of a breach of contract. It is not generally to punish the defendant, nor to recoup from them any benefit they have obtained from breaching the contract.
Expenses incurred by the claimant because of reliance on the contract being performed, where the profits they hoped would materialise are too speculative
Non-pecuniary losses are comparatively unusual in contract, and can only be claimed in limited circumstances such as breach of holiday or wedding contracts
Whether a particular type of loss would have been in the reasonable contemplation of the parties at the time of the contract as being a likely consequence of the breach
If a certain loss would be an inevitable or natural consequence of breach, the parties will be deemed to have had it in their reasonable contemplation. For any other type of loss, it depends on what the defendant actually knew at the time of the contract.
Parsons (Livestock) Ltd v Uttley Ingham - Illness and death of pigs from mouldy feed was not too remote, as it would have been within the reasonable contemplation of the parties.
Hugh agrees to paint all the rooms in Elnora's house. He paints the kitchen, but then abandons the job because he can earn more money elsewhere
Elnora should look for someone else to finish the painting at a reasonable price. She should obtain two or three comparable quotations and accept the cheapest
A claimant who has acted reasonably can claim for their loss, even if their reasonable attempts to mitigate have failed to reduce their loss, or even increased it
With defective goods, the starting point for the law is the difference in value between the goods (as they are) and the goods as they were expected to be
Cost of cure is the normal measure in cases of defective work, but the House of Lords did not consider it should be used where it was unreasonable in relation to the benefit to be obtained
ParkingEye had a legitimate interest in receiving income to meet the legitimate costs of running the car parking scheme, so the £85 fee for overstaying was not a penalty