As above from Sainsbury's they also have Robin Hood, Pet cemetery, Hot tub time machine, Get him to Creek. Not blu-ray but still a great price even if you only watch them a couple of times.
http://www.sainsburysentertainment.co.uk/en/Films-TV/DVD/Matthew-Vaughn/Kick-Ass/product.html?product=E10347574
http://www.sainsburysentertainment.co.uk/en/Films-TV/DVD/Matthew-Vaughn/Kick-Ass/product.html?product=E10347574