When we do British-isms here we tend to do them with an accent.  Personally, I blame Monty Python.  It's hard to say things like "I'm not dead yet" and "Don't you want to haggle" and "He's pining for the fjiords" without putting on an accent.  Talk about sad!  None of us are very good at it, I don't think!  LOL!

"If your pictures aren't good enough, you're not close enough."  ...  Robert Capa