0By Oxford accent do you mean RP? The only way to realistically to pick up another accent is to take elocution/acting/voice coach lessons. (or try moving to an area as a child).
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Charlotte_TThe only person speaking Oxford accent I've heard is Emma Watson (the one who plays Hermione in Harry Potter). She pronounced 'year' as 'yeah' (or something similar to it). I think it's special and nice. However, I know even people coming from the same area could speak different accents...There is a difference between RP and marked RP. I suppose an