In reply to AndyC72:
I think they are "true-to-size" so to speak. I take a UK9/EU43 in just about everything and my Salewa Condors are a 43 - perfect fit for me with two pairs of socks (1 thin, 1 thick) and no toe-stubbing on steep descents. No heel lift either.
I recall that Salewa have a the bold claim, certainly on my Condors, that they are guaranteed blister free and i have to be honest and say that has been true of mine