Brief introduction: click
Examples of English spoken with many different foreign accents: click
Variety in Wolverton (Milton Keynes): click
Readings on "Estuary English" compiled by John Wells: click
Paper: "Whatever happened to Received Pronunciation?" by John Wells: click
Web-site: Phonétique du Français Québécois: click
The IViE Corpus - speech data and intonation transcriptions from seven dialects of British English in five speaking styles: click
British and American Pronunciation: click
Useful site on variety in English: click