Well yes David, I would say that Estuary English is the dominant accent in Southern England these days and that's what I mean by "standard". To quote the nationmaster website that Jason mentions: "Estuary English is the form of the English

Good luck trying to learn British accents - if you succeed you'll be one of a very few American actors who've managed it. The best recent example was Gwyneth Paltrow in Sliding Doors; not only was her accent flawless it was also very well-observed

Which play is it? Is it contemporary, set specifically in an Afro-Caribbean community, or what? I grew up in Brixton and agree with david. It is an incredibly mixed area, particularly famous for its West Indian/Jamaican/Black British community