question about British English dialects

From: Andy Howey
Message: 30724
Date: 2004-02-05

Hello, all:
 
How many of you have seen either of the Harry Potter movies?  I was wondering if some of our British friends would comment on how many dialects are represented in either of those movies.  I'm no expert, but I thought I heard at least six different dialects.  Maybe this isn't all that exciting to others, but I thought it curious that some of the dialects seem to replace /��/ with /f/.  Also, at least one of the characters tends to glide /l/ into /w/, as in "bloody hellw".  Are these common features in British English?
 
Andy Howey