Riverwalk, like Ellianne, I was a little surprised to see your description of a couple of groups of young girls which you summed up by their 'accents and appearance as Essex/East End!!!!
Essex is a large County - and like every other County has a diverse population. Like other places it has some very wealthy areas, and some very deprived. Many very high flyers who work in the Capital choose to live in that County enjoying the countryside at home whilst working in the City of London. the East End of London has undergone tremendous gentrification over past decades, effectively meaning that only those with very good incomes and job can afford to live there.
So, to use that term is rather laughable, but also slightly offensive. All my adult children and one of my g. children come under this label. And, I really do recognise ANY of them or my teenage g.daughters friends in the description of the girls you give.
Too easy to use a TV programme to generalise on tens of thousands of people from this large area - if you generalised in this way by skin colour, race, ethnicity, religion, etc you would be breaking the law.
I do understand that none of this was meant, in any way, maliciously - but to me it is similar to saying 'All Welsh people can sing, All black people have rhythm, all Scottish people are mean, all Irish people are stupid, all Jews are rich - ALL OF WHICH is blatantly silly!!!