#Geographical factors of phonetic variations. National and regional variants of English pronunciation.
1. Northern dialect (northern part of England): [u] instead of [/] (cup, love, much); [o:] instead of [ou] (go, home); [e] or [з:] instead of [ei] (may, say, take).
2. Scottish dialect: [ir], [er], [/ ] instead of [з:] (bird, heard); [u] instead of [ou] (down); no distinguishing between [æ] and [a:] (bad, path, dance, half)
3. Cockney (less educated classes of people, part of London): [ai] instead of [ei] (today, late); [з:] instead of [æ] (bag); [h] doesn't occur, only in stressed position (think of (h)im, but History); [f, v, d] instead of dental consonants (thin [f], this [d]); glottal stop instead of [p, t, k] and between vowels (back door [bæ? do:].
Other well-known dialects in Britain: Geordie (Newcastle-on-Tyne); Scouse (Liverpool); Cornish (Cornwall) etc.