The £599.99 (inc. VAT) X555UA is one of many variants in ASUS's X555 line of 15.6-inch laptops. This model is based around Intel's 6th-generation Core i7-6500U processor running at 2.5GHz-3.1GHz (with Turbo Boost).
ASUS X555UA at ZDNet
ASUS X555UA at ZDNet