DH has just bought DD a new pair of shoes from Clarks size 6.5F. They feel far too wide and last time she got shoes from there the assistant said she was actually an £ but the type of shoe she got meant that I could just tighten them up more. In hindsight I wasn't satisfied with this but it was too late. DH is about to go and take them back but just want to get facts right. Is an E fitting narrower than an F fitting?