I know that the games will be shown on Eurosport, but i was wondering if there were any places where people might be gathering to watch the games. I'll be over visiting relatives but I still want to try and catch the games preferably with other supporters.
I guess your best bet would be Sports Café at Haymarket (Tube: Picadilly Circus) This is one of the most popular places to go for games. It is well known, so if you can't find it in the area, then just ask someone, they should know. http://www.thesportscafe.com/london/
You guys may be with other Americans at the Sports Cafe because its a pretty big hangout for American College Students studying in London, who knows though because most terms are over for summer break. A good story about that place, in March when I was there to catch the second end of the Liverpool-Celtic UEFA Cup match and the NCAA basketball tournament. Some hammered guy jumps on to the F1 car hanging from the ceiling and pretends to start driving the car. THe bouncers jump all around us and pry the guy out of the car and beat him up pretty good as they were dragging him out ... good times.