In reply to Heike:
Hi Heike,Wa
I'm no fell runner, but I like to wear fell running shoes for approaching climbs. (they're nice and light and super grippy on wet grass.)
I've got fat feet and really struggled to find shoes wide enough, but the following shoes have fitted me well.
Muzino wave harriers.
Montrail something or others
Walshes, but no the ordinary PB ones the PB Ultras, which have a much wider fit.
HTH
Tom