A Samsung Galaxy S7 edge can be had for around £600 in the UK without a carrier contract (if you do want a contract, here's more info on the offers). You can head to eBay for some cost cutting - currently, the Galaxy S7 edge 32GB (Black or Gold) is available for £580 but should soon drop another tenner to £570. Shipping to the UK is free. By the way, the Xbox One and PlayStation 4 are available on promotion too - a 500GB Xbox plus The Division are £240, a white 500GB PS4 is £225.
Source: http://www.gsmarena.com/deal_samsung_galaxy_s7_edge_32gb_in_the_uk_for__pound570-news-17548.php