Everywhere you go certain food and drinks are relegated to specific cultures. Wine is French, pasta Italian, fast food with the US, etc. Of course, this is because of the origins of each thing. In a place where it seems every other building is a restaurant, these sorts of connections are even more apparent.
In particular, English pubs are extremely popular. To me, this is surprising because I associate Ireland more strongly with alcohol than England, but apparently not everyone feels as I do. In any case, this is a common chain in Tokyo.