
Interesting Websites:
1. http://en.wikipedia.org/wiki/British_English
This page gives us some characteristics of the British variety of English. It shows the history of such variety, the dialects, accents, notes about it, discussion on standardization and also provides external links.
2. http://www.uni-due.de/SHE/HE_DialectsModernEnglish.htm
A page where you can find good informations about the several varieties of Modern English (including the rise of the London standard).
3. http://www.bl.uk/learning/langlit/sounds/index.html
in this site you can hear and read about the several dialects and accents of British English. Very interesting.
4. http://www.solinguainglesa.com.br/conteudo/brit_amer1.php and http://rubipelomundo.blogspot.com/2009/07/american-english-x-british-english.html
The cultural differences between American and British English, including a brief history of the language. There are charts comparing differences in vocabulary, pronunciation and grammar.
5. http://en.wikipedia.org/wiki/Cockney
This website presents good information on Cockney English. Enjoy!