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.
Cardiff English
Although based in nearby Barry, accents heard in the sitcom "Gavin & Stacey" are not Cardiff or Barry accents, with the exception of the character Nessa, played by Ruth Jones who was brought up in Bridgend but now resides in Cardiff.