Just purchased this from the Luton store. Comes with 3 years guarantee/warranty and you can purchase additional accidental cover for 2 years for £89.00 which i have purchased also. This is better thank John Lewis as you get an additional years guarantee. The additional cover does not include lost or theft though. Seems like a good price with 3 years guarantee.
No doubt it will get cold in here but it might help someone who is looking to buy an iphone outright like me.