 However, in recent decades l-vocalization has been spreading outwards from London and the south east, John C Wells argued that it is probable that it will become the standard pronunciation in England over the next one hundred years, an idea which Petyt criticised in a book review.In Cockney, Estuary English and New Zealand English, l-vocalization can be accompanied by phonemic mergers of vowels before the vocalized , so that "real", "reel" and "rill", which are distinct in most dialects of English, are homophones as .Graham Shorrocks noted extensive L-vocalisation in the dialect of Bolton, Greater Manchester and commented, "many, perhaps, associate such a quality more with Southern dialects, than with Lancashire/Greater Manchester."