Budget wise I guess I can't justify more than £1000, ideally more like 800...max.
With that in mind I've seen these two brand offerings, which seem half decent, reviews suggest that though the dell specs on paper sound good, performance is lacklustre compared to the acer...
http://www.acer.co.uk/ac/en/GB/content/series/aspirevnitrohttp://www.dell.com/uk/p/inspiron-15-7548-laptop/pdBoth IPS screens, with decent storage.