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.
List of dialects of English
Dialects can be defined as "sub-forms of languages which are, in general, mutually comprehensible." English speakers from different countries and regions use a variety of different accents (systems of pronunciation), as well as various localized words and grammatical constructions; many different dialects can be identified based on these factors. Dialects can be classified at broader or narrower levels: within a broad national or regional dialect, various more localized sub-dialects can be identified, and so on. The combination of differences in pronunciation and use of local words may make some English dialects almost unintelligible to speakers from other regions.