London
There are many accents traditionally associated with London. The most well known of the London accents long ago acquired the Cockney label from London's East End, which is heard both in London itself, and across the wider South East England region more generally. The accent of a 21st-century Londoner varies widely; what is becoming more and more common amongst the under-30s however is some fusion of Cockney with a whole array of ethnic accents, in particular Caribbean, which form an accent labelled Multicultural London English (MLE). The other widely heard and spoken accent is RP (Received Pronunciation) in various forms, which can often be heard in the media and many of other traditional professions and beyond, although this accent is not limited to London and South East England, and can also be heard selectively throughout the whole UK amongst certain social groupings. Since the turn of the century the Cockney dialect is less common in the East End and has 'migrated' east to Havering and the county of Essex.
Northern England
Northern English accents have not undergone the – split, and a common shibboleth to distinguish them from Southern ones is the Northern use of the short a (the near-open front unrounded vowel) in words such as "bath" and "castle". On the opposite border, most Northern English accents can be distinguished from Scottish accents because they are non-rhotic, although a few rhotic Lancashire accents remain. Other features common to many Northern English accents are the absence of the – split (so "put" and "putt" are homophones), the reduction of the definite article "the" to a glottal stop (usually represented in writing as "t"), and the T-to-R rule that leads to the pronunciation of "t" as a rhotic consonant in phrases like "get up" ().