I know right? Lot of squinnies on here bemoaning the accuracy but I’ve spent my whole life being told my dialect is just half cockney, half bristonian by the rest of the country. I feel so seen.
As I said, you still here all this when Parkies speak, but on the Island it is a lot less heard these days.
I'd say a lot of the letter changes (v/f for th, w for l, dropping t's) are fairly standard estuary accent, e.g. the kind of accent Danny Dyer has.