Very much so, In truth, Scottish, Irish and Welsh ones too, if it serves a purpose.
A Jamie Oliver type accent with the addition of an antipodean tendency to turn every sentence into a question by raising half an octave at the end is an increasingly common and irritating part of English, here.

I'm not the only one, we've just had a programme called " grumpy Old Men" screened here, in which they picked upon just this.

Don't wish to sound a snob, but I speak in precisely the way that I was taught at school, and pre-school from my parents.

P.S. Listen to before and after interviews with Nigel Kennedy, the violinist - it'll give you the idea