I am here , just popped in but just about to shut down Pc now . My Ash (same as those but red star) are 5 and are true to size. I have found them really comfy .. , they really are a great price I paid £75 for mine in Ash sale.. . My feet are fairly wide.. For comparison If you have any saltwater sandals I take a 6 in those ( which is a Uk 5 )and find the width fine.
It is always a gamble with shoes though, are you able to send back to Brand Alley?