I know Bill, I speak a kinda (kinda, spoken with an American accent) BBC English/Cockney mix, with, I'm sure by now, some American expressions thrown in.

I still haven't got the Colorado "O" pronounced as "U" yet. Culuradu Ruckies is one thing, but when you are talking about Soccer, it just sounds too odd.

I do use American expressions in my songwriting "I really wanna know, how do plastic flowers grow and where do we get them plastic flower seeds". But that is deliberate.

It's just that I have too much fun telling people that "I" don't have an accent.