A guarantee is totally separate to your statutory rights. It's a 'gift' from the manufacturer, who is entitled to determine the rules which apply to it. So there can be no universal answer to your question. You'll have to read the small print.
Its a full parts and labour 2 year guarentee. i have read it agian and it does say After registering your free guarentee, your appliance will be covered for parts and labour for 2 years. Not automatically guarenteed I suppose I best do it.