Sale of Goods Act has gone, replaced on 1 October 2015 the Consumer Rights Act 2015
Repair or replacement
When there is a breach of contract, but the consumer has lost or chooses not to exercise his right to reject goods, he will be entitled in the first instance to claim a repair or replacement.
Where a repair or replacement is claimed, the trader must do this at no cost to the consumer, within a reasonable time and without causing significant inconvenience.
The consumer cannot choose one of these remedies above the other if the chosen remedy is either impossible or disproportionate as compared to the other remedy. Also, once the consumer has chosen a remedy, he must give the trader a reasonable time to provide that remedy.
The remedies fail if, after just one attempt at repair or replacement, the goods still do not meet the necessary requirements. The consumer does not have to give the trader multiple opportunities to repair or replace, although he can do so if he wishes. The remedies also fail if they are not provided within a reasonable time and without causing significant inconvenience to the consumer.
In either case where repair or replacement fail, the consumer is entitled to further repairs or replacements or he can claim a price reduction or the right to reject. The same rule applies if both repair and replacement are impossible or disproportionate from the outset.