I must say that this is a redemption deal. Basically, the overall price of the contract is:
(18 - 8 by redemption) * £25.54 - £50 quidco = £205.4 which is just basically the price of a used N8 in ebay and on top of that you have a fair contract.
I know that mobiles.co.uk aren't really the perfect retailer, but if you don't break their rules and have some guts to call them if something goes wrong, then it should be alright with the redemption. Don't forget you can send your bills through e-mail which makes the whole process alot easier.
To all the haters of Symbian - It's not about Symbian, it's what people want from a phone. Nokia N8 has an awesome camera, free voice guided navigation for a life time, nearly perfect call quality, hdmi port and some other great features and Symbian Anna is coming soon that should fix some issues.
Specs and reviews:http://www.gsmarena.com/nokia_n8-3252.php