When buying M&S shoes recently of which I have always purchased a size 4.5 shoe that has always fitted me perfectly, I was shocked this weekend when I tried on a size 4.5 shoe only to find that it was too lose and with wear in time would definitely fall off the heal of my foot, I tried a size 4 which was it little bit tighter than I was normally used to but I have purchased them hoping they will stretch a bit with wear. I don't know if M&S have changed there supplier or the company who manufacture the shoes they sell but there shoe sizes have definitely changed which is a shame. I hope I don't have to change my store where I buy my shoes and start buying my shoes at another top shoe retailer that does half sizes.