Linguists are most excited by what MLE is doing to the rhythm of speech. English is usually spoken with a stress-timed rhythm, in which syllables are stressed at regular intervals. Speakers of MLE speak with a syllable-timed rhythm, in which all syllables are accorded roughly the same time and stress, as in French or Japanese. Syllable-timed speech is a characteristic of languages that have come into contact with other languages. Versions of it may have existed in multicultural places such as Hackney for centuries, thinks Mr Kerswill.
The rise of Multicultural London English (MLE) (The Economist)