American English vs British Language

I am very interested with this video because we know the difference between american accent and british.
Rachel practiced the american language. She focused on the difference between some vowel sounds. In british english for 'r' we tend to drop it. We also drop the letter 'r' at the end of words in british english, whereas in American english there is no difference. And in standard british english the letter 't' always pronounced as a t with little 's',and in american when the letter 't' is in the middle position in a word and it sometimes changes to a soft d.
This video very good for new english language learner.