Obsessed With Turtles
Join Date: Jan 2003
Location: Land of Procrastination (MN)
If indeed it was a ferret most likely it hissed at you because you startled it. Did it let off a REALLY loud scream (screach sorta). White ferrets are prone to deafness as a general rule and tend to be very vocal as a defense.was it's tail bottle brushed? (poofed up) I highly doubt it was wild, although I don't know much about ferrets in the UK, so I guess it's possible.
I would call a local shelter or animal control center if yuo have one. Flyers certainly may help... but with the animal not being in your posession flyers may not do as much. Ferrets tend to be hiders, so if you are likley to find it again, it will probably be along side a building or under brush of some sort where it will be relatively dark.
Good luck and please do keep us updated!!