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.
Culture of Bristol
A (slightly tongue in cheek) guide to Bristol's dialect is at http://www.thatbebristle.co.uk/ The linguist John C Wells codified the differences between a Bristol accent and Received Pronunciation in his "Accents of English" series in the following way. It is much more similar to General American than most other accents in Britain.