As I said, it's all about tradition. In England anything newer than the 15th century has the prefix nouveau attached to it. This is, incidentally, the only thing they've borrowed from the French other than French fries, which they call chips. In the U.S., on the other hand, we consider anything from before 1982 to be old, which helps explain why there are so many movies being made from bad 1970's TV shows. Apparently it takes an American to interpret between the Irish and the English.
Communication is a problem in London.
Signs are in English, the people speak English, yet communicating is almost as difficult as it is in France. I was approached by a man asking for directions. His English accent was heavy, but he managed to explain that he's lost and can't read, so can we please tell him which train to take. My friend tells him how to get to his destination. That's not right at all.