http://news.bbc.co.uk/2/hi/uk_news/magazine/4694993.stm
By opening night, they will have rehearsed using phonetic scripts for two months and, hopefully, will render the play just as its author intended. They say their accents are somewhere between Australian, Cornish, Irish and Scottish, with a dash of Yorkshire – yet bizarrely, completely intelligible if you happen to come from North Carolina.