Stephen, under the Sale of Aoods Act you would be perfectly entitled to ask them to repair it free of charge or for a replacement. I had a similar issue with an awning and the repair was doen free of charge 18 months after the warranty had expired. Have a read through http://www.berr.gov.uk/whatwedo/consumers/fact-sheets/page38311.html and also log into http://www.consumeractiongroup.co.uk/forum/ for more advice. Then send them a preliminary letter and if this is rejected, send a Letter before Action advising of a claim through the Small Claims Court. normally they buckle in at this stage however if they don't proceed with the claim as you stand a very good chance of winning and then claiming all costs from them as long as you followed all their instructions regarding storage etc. In your case court fees shoudl not amount to anything more than