In reply to MarkJH:
> It doesn't need a separate law. The obligations of the buyer and the seller are part of the contract and can be enforced as such. The contract was that Martin W agreed to pay a specified amount of money for a specified product. If the seller sends the wrong item then Martin W is free from his contractual obligation to pay the money and is due a refund regardless of what happens to the product.
Correct that it depends on the contract but who reads the small print?
It doesn't need a separate law, it is in the latest regulations (Consumer Contracts (Information, Cancellation and Additional Charges) Regulations 2013) that came into effect on 13th June 2014.
"Return of goods in the event of cancellation
35.—(1) Where a sales contract is cancelled under regulation 29(1), it is the trader’s responsibility to collect the goods if—
(a) the trader has offered to collect them, or
(b) in the case of an off-premises contract, the goods were delivered to the consumer’s home when the contract was entered into and could not, by their nature, normally be returned by post.
(2) If it is not the trader’s responsibility under paragraph (1) to collect the goods, the consumer must—
(a) send them back, or
(b) hand them over to the trader or to a person authorised by the trader to receive them. "
https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/2...