Faulty goods
The consumer is protected under the regulations within the cooling off period. Once the period has expired, the Sale of Goods Act 1979 then protects the consumer. Under the Sale of Goods Act 1979, the goods must "conform to contract". This means they must be as described, fit for purpose and of satisfactory quality (i.e. not inherently faulty at the time of sale).
Goods are of satisfactory quality if they reach the standard that a reasonable person would regard as satisfactory, taking into account the price and any description.
Aspects of quality include fitness for purpose, freedom from minor defects, appearance and finish, durability and safety.
If the goods are faulty, the consumer can ask either for a refund, or for the goods to be repaired or replaced at no cost to them, or for compensation