What is the acrolect and basilect in your country?

Various linguistics textbooks define 'acrolect' as the variety of a language with the most prestige and 'basilect' as the variety of a language which is the most stigmatised.

In Norway, where I live, the Oslo accent is the acrolect - probably because it is the language of our capital - and the language of Toten is the most stigmatised - probably because it is associated with a heavily industrialised area.

I find this subject fascinating and would be very interested to learn what the acrolect and basilect is in your country - England especially!