Excellent websites for everybody....

http://www.meetup.com/ [nofollow]
http://www.meetup.com/AmericanSocial/ [nofollow]

http://www.internations.org/ [nofollow]

I have attended many events through these websites in the UK, in London and Internationally...It should be great fun for everybody to enjoy life in the UK or wherever you might be...

My wife and I also used meetup while living in the states and made some really great friends. I have just created a group on meetup called "American Expats Meetup Group" for those closer to Lincolnshire and Cambridgeshire. We would love to get some members and organize a few outings

newcomer link: http://www.meetup.com/American-Expats-Meetup-Group [nonactive]