It's all a matter of taste of course, but it's hard to take the statement that Britain go the best cheese in the world seriously. If we only look at Europe: France, Italy, Switzerland are a lot more famous for their cheeses than Britain. The fact that almost all British cheeses are pasteurized is a clear indication that having great cheeses is not part of the British mainstream culture. That being said, there is also some high quality cheeses in Britain, but in my opinion, a lot less than in those other europeans country, by production amount and number of cheese type.