Been waiting for a deal on this phone and it just came down by £30 just now. Xiaomi Mi5 Pro. This is a better version of the older Mi5 with 4GB RAM/128GB memory. This Pro version is almost the same in specs as the Mi5S, except this one comes with a ceramic body instead of metal. This lower price is for White Ceramic.
Full specs: http://www.gsmarena.com/xiaomi_mi_5-6948.php
The price includes "Seller's shipping method". Which is how they claim "always tax free" and it should be delivered in 7days. This as well includes a 1year manufacturer's warranty as well as 3rd party warranty by TWG: http://www.thewarrantygroup.eu/uk/
8.42% cashback with TopCashBack.co.uk