English language in southern England
South East England and the Home Counties (the counties bordering London) tend to reflect the interface between the London region and other regional accents. Affluent districts are associated with a modified Received Pronunciation (RP) accent, reflecting their traditional popularity with upper middle and upper-class residents which has spread throughout more social classes broadly in rural areas with commuting access to London. Less affluent areas have traditionally mainstream London accents (that is, variants of the Estuary English accent) that grade into southern rural outside urban areas.
Trap-bath split
Most accents of American English and Canadian English are unaffected by the split. The main exceptions are parts of New England ("see Boston accent"), where the broad sound can be used in some of the same words as in southern England, such as "aunt, ask, bath" etc. ("aunt" though is unique, as the broad-a pronunciation is found sporadically throughout the US, not only in New England)