http://www.russellhobbs.co.uk/contact_us.html
They may help you - some companies do deal direct with the public - the general case though is that the warranty responsibility is "owned" bythe people you gave your money to - House of Fraser. You may need to be able to show proof of ownership.
When my expensive Magimix kettle failed they sent me a replacement from the factory - very unusual.
Good luck...
Peccavi, April 2010