This maybe relevant from the OFT website:
"Inertia selling
The regulations amend the Unsolicited Goods and Services Act 1971 and the Unsolicited Goods and Services (Northern Ireland) Order 1976 to remove any rights of the sender in respect of unsolicited goods and services and any obligations on the consumer.
As such, consumers can retain unsolicited goods or dispose of them as they wish. They are under no obligation to keep them safe or to return them to you. It is an offence for you to demand payment from consumers for unsolicited goods or services."
(
http://www.oft.gov.uk/Business/Legal...erformance.htm)
Contact the OFT and see what they say.