I agree Stu
From what I hear, most retailers see 'reasonable' as 6 months or less, this to me is wrong. If an item with that kind of value fails, this time limit should be extended imho.
UK law can be a real pain when it comes down to arguing the finer points, but most retailers will offer some kind of 'middle ground' to their customers if it maintains good customer relations. I usually ask to speak to the manager, if I get the usual response "He's in a meeting", I go with this:
"Well, someone must have been left in charge, I'll speak to them please"
That usually gets the response I'm after