Consonants Clear vs. dark /l/

In RP /l/ has clear [l] and dark  allophones, the former occurring intervocalically as in silly, the latter pre- and postvocalically, as in lip, film. In Tyneside and Northumberland, the dark allophone is not used, so that, e.g. lip, film are pronounced with clear [l]. Where the /l/ occurs before a nasal, an epenthetic vowel is inserted between the /l/ and the nasal, so that film, elm and the river Aln are pronounced . Conversely, in Lancashire, the dark  is used in clear contexts, as in Lancashire, really .