Hi JonnyThanks for the nice comments I have found a few pairs of size 50 which should be OK. I have never dealt with the companies so I am not sure how good their service is let me know how you get on.Check out httpwww.sailgb.comcclimbingshoeshttpwww.outdoorequipmentwarehouse.co.ukclimbingshoes.htmlI hope this helpsWalt