There is no single word that can encapture the "British accent" since there are many dialects. Possible answers range from pompous to uneducated and fill the entire spectrum therein.
This German accent guide shows you step by step how to do a German accent and has videos of people speaking in a German accent. I honestly think the best way to learn is to watch people speaking it,...
Watch Braveheart.
Other samples include any movie with Sean Connery, or programming from BBC Scotland.(there are too many samples to list off the top of my head).
The Vatican is its own nation, but wholly inside Italy (the nation itself is about the size of New York's Central Park). Local residents generally speak Italian and therefore have the same accent....