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.
American English
Many British accents have evolved in other ways compared to which General American English has remained relatively more conservative, for example, regarding the typical southern British features of a trap–bath split, fronting of , and H-dropping, none of which typical American accents show. The innovation of /t/ glottaling, which does occur before a consonant (including a syllabic coronal nasal consonant, like in the words "button" or "satin") and word-finally in General American, additionally occurs variably between vowels in British English. On the other hand, General American is more innovative than the dialects of England, or English elsewhere in the world, in a number of its own ways: