Brits in Chicago This one is currently on hold. I'm sure it will be back very soon - keep checking the site! One of many "meetup groups" you can join in Chicago, this one is relatively new, but I've met some friendly folk on the events I've attended. Events are more social in form i.e. meeting for dinner, movies, pub etc.
Chicago Tafia My wife is Welsh, so I need to put this on here. Similar to the above, Dave organizes some great events, often with a Welsh slant i.e Welsh bands, St David's day etc.
British-American Business Council Networking resource to connect British and American businesses.
InterNations Networking resource to connect individuals from around the world.