Sounds Familiar? Accents and Dialects of the UK
British Library Resource
http://www.bl.uk/learning/langlit/sounds/
You also want to look at:
Received Pronunciation (RP)
In the UK, only a small percentage of people speak something similar to RP. In the area near Oxford, Cambridge, Brighton and London (although there is a regional accent for London also).
"Normal" Britons usually speak with their own local accents, which are often quite different from RP. Sometimes cities that are only 20 km apart have very different accents.
RP is non-rhotic, which means that the letter r is usually "silent", unless it is followed by a vowel. Here's how it works:
* In words like car, tower, inform and first, r is silent (r is not followed by a vowel).
* In words like red, foreign, print, r is pronounced (r is followed by a vowel).
* R is also pronounced at the end of a word, if the next word starts with a vowel, for example: number eight, far away.
*
Most RP speakers also insert an r in phrases like: the idea(r) of, Africa(r) and Asia, law(r) and order. This r is not in the spelling; they just use it to separate two vowels.
The following pairs sound exactly the same in RP: or/awe, court/caught, sore/saw, farther/father, formerly/formally. In General American, they all sound different.
The range of American accents is much lower than English in Britain.
Also RP is what would to most people be referred to as "Queen's English" or the academic - English.
Spoken English from regions can be much different as you can see above, and is different to American English for the above.